Chicopee River

River in Massachusetts · near Wilbraham

Unresolved: no end reported

A discharge here was reported but its end never was. Sources often skip the "ceased" notice, so after the first week the water is shown hatched yellow until 30 days have passed, and the event stays flagged on its pages after that.

Why this colour: Unresolved: no end reported: no end reported. Rationale: From day 7 to day 30 the reach or water is shown hatched yellow 'unresolved: no end reported', listed under active discharges with that label. (source: data/rules.json) How long a water stays coloured, and why

CSO of Oct 11 18:10: unresolved, no end reported · SPRINGFIELD WATER & SEWER COMMISSION · on a modeled downstream reach · since Oct 26, 2026, 9:19 AM EDT

Source: SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b3e45436-6c03-4743-a0ed-ec4616959650, published Oct 12, 2026, 9:19 AM EDT, retrieved 2026-11-02 11:54 UTC · notice

As of Nov 2, 2026, 6:56 AM EST.

Events behind the colour

Unresolved: no end reported Combined sewer overflow · SPRINGFIELD WATER & SEWER COMMISSION · SPR034 MAIN ST. · Oct 11, 2026, 6:10 PM EDT to ended, time not reported · not reported · Unresolved: no end reported, until Nov 11, 2026, 8:19 AM EST
Source: SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b3e45436-6c03-4743-a0ed-ec4616959650, published Oct 12, 2026, 9:19 AM EDT, retrieved 2026-11-02 11:54 UTC · notice
Unresolved: no end reported Combined sewer overflow · SPRINGFIELD WATER & SEWER COMMISSION · SPR035 FRONT & OAK ST. · Oct 11, 2026, 5:50 PM EDT to ended, time not reported · not reported · Unresolved: no end reported, until Nov 11, 2026, 8:18 AM EST
Source: SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 32df199c-5b11-4024-8ee6-6390cdbb5a85, published Oct 12, 2026, 9:18 AM EDT, retrieved 2026-11-02 11:54 UTC · notice

What the authorities advise

“Avoid contact with these water bodies for 48 hours after the discharge or overflow ceases due to increased health risks from bacteria and other pollutants. See website for more information on whether specific resource areas, such as bathing beaches, are affected.”

SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) · 314 CMR 16.04(10)(g) · source · event

Map

Source: water outlines from OpenBoatLaunch and OpenStreetMap contributors (ODbL); outfalls from EPA ECHO and the state outfall layers; modeled reaches computed by DirtyWaterWatch from USGS NLDI, NHDPlus and the nearest USGS gauge (Jobson 1996); basemap OpenFreeMap and OpenMapTiles.

Outfalls are small brown dots; modeled downstream reaches are dashed.

Modeled downstream reaches on Chicopee River

Modeled downstream reach (estimate, not verified by sampling). Computed by DirtyWaterWatch from the river network and the nearest flow gauge; it is not an official advisory area.

Unresolved: no end reported 0 to 0.3 km below the outfall

0 to 0.3 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in under an hour (it could be as soon as under an hour) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 0 to 1 km below the outfall

0 to 1 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in under an hour (it could be as soon as under an hour) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 0.3 to 2.2 km below the outfall

0.3 to 2.2 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 2 hours (it could be as soon as about 1 hour) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 1 to 2.9 km below the outfall

1 to 2.9 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 2 hours (it could be as soon as about 1 hour) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 2.2 to 2.5 km below the outfall

2.2 to 2.5 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 2 hours (it could be as soon as about 1 hour) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 2.5 to 3.5 km below the outfall

2.5 to 3.5 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 3 hours (it could be as soon as about 2 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 2.9 to 3.2 km below the outfall

2.9 to 3.2 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 3 hours (it could be as soon as about 1 hour) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 3.2 to 4.2 km below the outfall

3.2 to 4.2 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 3 hours (it could be as soon as about 2 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 3.5 to 3.7 km below the outfall

3.5 to 3.7 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 3 hours (it could be as soon as about 2 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 3.7 to 4.6 km below the outfall

3.7 to 4.6 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 4 hours (it could be as soon as about 2 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 4.2 to 4.4 km below the outfall

4.2 to 4.4 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 3 hours (it could be as soon as about 2 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 4.4 to 5.3 km below the outfall

4.4 to 5.3 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 4 hours (it could be as soon as about 2 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 4.6 to 5.6 km below the outfall

4.6 to 5.6 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 4 hours (it could be as soon as about 3 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 5.3 to 6.3 km below the outfall

5.3 to 6.3 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 5 hours (it could be as soon as about 3 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 5.6 to 8.9 km below the outfall

5.6 to 8.9 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 7 hours (it could be as soon as about 4 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 6.3 to 9.6 km below the outfall

6.3 to 9.6 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 8 hours (it could be as soon as about 4 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 8.9 to 10.4 km below the outfall

8.9 to 10.4 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 8 hours (it could be as soon as about 5 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 9.6 to 11.1 km below the outfall

9.6 to 11.1 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 9 hours (it could be as soon as about 5 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 10.4 to 10.8 km below the outfall

10.4 to 10.8 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 9 hours (it could be as soon as about 5 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 10.8 to 11.2 km below the outfall

10.8 to 11.2 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 9 hours (it could be as soon as about 5 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 11.1 to 11.5 km below the outfall

11.1 to 11.5 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 9 hours (it could be as soon as about 5 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 11.2 to 11.3 km below the outfall

11.2 to 11.3 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 9 hours (it could be as soon as about 5 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 11.3 to 11.6 km below the outfall

11.3 to 11.6 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 9 hours (it could be as soon as about 5 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 11.5 to 11.9 km below the outfall

11.5 to 11.9 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 9 hours (it could be as soon as about 5 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 11.6 to 11.7 km below the outfall

11.6 to 11.7 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 9 hours (it could be as soon as about 5 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 11.7 to 14.7 km below the outfall

11.7 to 14.7 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 11 hours (it could be as soon as about 6 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 11.9 to 11.9 km below the outfall

11.9 to 11.9 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 9 hours (it could be as soon as about 5 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 11.9 to 12.3 km below the outfall

11.9 to 12.3 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 10 hours (it could be as soon as about 6 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 12.3 to 12.4 km below the outfall

12.3 to 12.4 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 10 hours (it could be as soon as about 6 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 12.4 to 15.4 km below the outfall

12.4 to 15.4 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 11 hours (it could be as soon as about 7 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 14.7 to 15.4 km below the outfall

14.7 to 15.4 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 11 hours (it could be as soon as about 7 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 15.4 to 16.1 km below the outfall

15.4 to 16.1 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 12 hours (it could be as soon as about 7 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 15.4 to 20.1 km below the outfall

15.4 to 20.1 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 13 hours (it could be as soon as about 8 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 16.1 to 20.8 km below the outfall

16.1 to 20.8 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 14 hours (it could be as soon as about 8 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 20.1 to 20.4 km below the outfall

20.1 to 20.4 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 14 hours (it could be as soon as about 8 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 20.4 to 21.2 km below the outfall

20.4 to 21.2 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 14 hours (it could be as soon as about 8 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 20.8 to 21.1 km below the outfall

20.8 to 21.1 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 14 hours (it could be as soon as about 8 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 21.1 to 21.9 km below the outfall

21.1 to 21.9 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 14 hours (it could be as soon as about 8 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 21.2 to 22.6 km below the outfall

21.2 to 22.6 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 15 hours (it could be as soon as about 9 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 21.9 to 23.3 km below the outfall

21.9 to 23.3 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 15 hours (it could be as soon as about 9 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 22.6 to 23.9 km below the outfall

22.6 to 23.9 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 15 hours (it could be as soon as about 9 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 23.3 to 24.6 km below the outfall

23.3 to 24.6 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 16 hours (it could be as soon as about 9 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 23.9 to 24.4 km below the outfall

23.9 to 24.4 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 16 hours (it could be as soon as about 9 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 24.4 to 26 km below the outfall

24.4 to 26 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 16 hours (it could be as soon as about 10 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 24.6 to 25.1 km below the outfall

24.6 to 25.1 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 16 hours (it could be as soon as about 9 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 25.1 to 26.7 km below the outfall

25.1 to 26.7 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 17 hours (it could be as soon as about 10 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 26 to 26.1 km below the outfall

26 to 26.1 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 16 hours (it could be as soon as about 10 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 26.1 to 27.5 km below the outfall

26.1 to 27.5 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 17 hours (it could be as soon as about 10 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 26.7 to 26.8 km below the outfall

26.7 to 26.8 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 17 hours (it could be as soon as about 10 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 26.8 to 28.2 km below the outfall

26.8 to 28.2 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 17 hours (it could be as soon as about 10 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 27.5 to 29.1 km below the outfall

27.5 to 29.1 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 18 hours (it could be as soon as about 11 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 28.2 to 29.8 km below the outfall

28.2 to 29.8 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 18 hours (it could be as soon as about 11 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 29.1 to 29.1 km below the outfall

29.1 to 29.1 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 18 hours (it could be as soon as about 11 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 29.1 to 30.3 km below the outfall

29.1 to 30.3 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 19 hours (it could be as soon as about 11 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 29.8 to 29.8 km below the outfall

29.8 to 29.8 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 18 hours (it could be as soon as about 11 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 29.8 to 31 km below the outfall

29.8 to 31 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 19 hours (it could be as soon as about 11 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 30.3 to 30.7 km below the outfall

30.3 to 30.7 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 19 hours (it could be as soon as about 11 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 30.7 to 30.9 km below the outfall

30.7 to 30.9 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 19 hours (it could be as soon as about 11 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 30.9 to 32 km below the outfall

30.9 to 32 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 19 hours (it could be as soon as about 12 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 31 to 31.4 km below the outfall

31 to 31.4 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 19 hours (it could be as soon as about 11 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 31.4 to 31.6 km below the outfall

31.4 to 31.6 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 19 hours (it could be as soon as about 11 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 31.6 to 32.7 km below the outfall

31.6 to 32.7 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 20 hours (it could be as soon as about 12 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 32 to 37.3 km below the outfall

32 to 37.3 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 22 hours (it could be as soon as about 13 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 32.7 to 38 km below the outfall

32.7 to 38 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 22 hours (it could be as soon as about 13 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.
Unresolved: no end reported 37.3 to 40 km below the outfall

37.3 to 40 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR034

If sewage entered the river at outfall 034 at Oct 11 18:10, water from that point would typically reach here in about 23 hours (it could be as soon as about 14 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.

Model stops here: 40 km cap.
Unresolved: no end reported 38 to 40 km below the outfall

38 to 40 km below the outfall · from SPRINGFIELD WATER & SEWER COMMISSION outfall SPR035

If sewage entered the river at outfall None at Oct 11 17:50, water from that point would typically reach here in about 23 hours (it could be as soon as about 14 hours) at the river flow measured at CHICOPEE RIVER AT INDIAN ORCHARD, MA (376 cfs) at 2026-11-02T11:00:00+00:00. This is a calculation from published USGS methods, not a measurement of bacteria. It does not mark where the river is or is not fit for contact.

Model stops here: 40 km cap.

Traced outfall paths

No current report MA0101508 outfall 026 · 32.835 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 027 · 33.038 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 029 · 33.643 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 031 · 33.884 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 034 · 35.27 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 037 · 36.074 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 040 · 35.543 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 042 · 31.942 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 26 · 32.835 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 27 · 33.038 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 32A · 35.543 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 32B · 39.426 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 34 · 35.27 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 37 · 36.074 km traced · Model stops here: tidal below this point
No current report MA0101508 outfall 40 · 35.543 km traced · Model stops here: tidal below this point
Unresolved: no end reported MA0101613 outfall 034 · 40 km traced · Model stops here: 40 km cap
Unresolved: no end reported MA0101613 · 40 km traced · Model stops here: 40 km cap

Source: paths traced by DirtyWaterWatch on the USGS NLDI / NHDPlus network from each outfall to the head of tide, the first lake or the distance cap; statuses from the events on them.

The last 90 days

Last 90 days, hour by hour. Red: advisory in effect; yellow: caution; hatched yellow: unresolved, no end reported; grey: no current report; hatched purple: a source was not updating.

Unresolved: no end reported: Oct 26, 2026, 10:00 AM EDT to now · set by event 1, event 2
Caution: Oct 11, 2026, 5:00 PM EDT to Oct 26, 2026, 10:00 AM EDT · set by event 1, event 2
Unresolved: no end reported: Sep 4, 2026, 9:00 AM EDT to Sep 4, 2026, 4:00 PM EDT · set by event 1
Caution: Sep 3, 2026, 9:00 AM EDT to Sep 4, 2026, 9:00 AM EDT · set by event 1, event 2, event 3, event 4
Advisory in effect: Sep 1, 2026, 8:00 AM EDT to Sep 3, 2026, 9:00 AM EDT · set by event 1, event 2, event 3, event 4
Unresolved: no end reported: Aug 19, 2026, 4:00 PM EDT to Sep 1, 2026, 8:00 AM EDT · set by event 1, event 2
Caution: Aug 5, 2026, 9:00 AM EDT to Aug 19, 2026, 4:00 PM EDT · set by event 1, event 2, event 3, event 4, event 5, event 6, event 7
Advisory in effect: Aug 4, 2026, 8:00 AM EDT to Aug 5, 2026, 9:00 AM EDT · set by event 1, event 2, event 3, event 4, event 5

Source: hourly statuses computed by DirtyWaterWatch (pipeline build/status.py) from the events linked above and the rules on the methods page; history as of 2026-11-02 11:56 UTC.

Discharges over the years

Discharge events, last 12 months36Dec 2025 to Nov 2026
Days with a discharge, last 12 months12Dec 2025 to Nov 2026
Hours under advisory, last 12 months483Dec 2025 to Nov 2026
2026 season under advisory7.0%May to October; 307 h

Discharge events per month

387 events, Jan 2022 to Nov 2026. Counted from 385 verified or annual reports, 2 public notices.

Combined sewer overflow
Sanitary sewer overflow
Bypass, blended or other
No source
Partly covered or sparse source

No source covers 2022-01 to 2022-04. MassDEP portal records begin 2022-06-30. Verified Data Reports arrive after the month ends, so the latest months count public notices. Some dischargers here report only monthly or yearly totals; those are shown under reported totals, not counted here.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table

Discharge events per month
Month	Combined sewer overflow	Sanitary sewer overflow	Total	Counted from	Coverage
Jan 2022	0	0	0		No source
Feb 2022	0	0	0		No source
Mar 2022	0	0	0		No source
Apr 2022	0	0	0		No source
May 2022	0	0	0		Partly covered or sparse source
Jun 2022	0	0	0		Partly covered or sparse source
Jul 2022	28	0	28	Verified or annual reports
Aug 2022	9	0	9	Verified or annual reports
Sep 2022	18	0	18	Verified or annual reports
Oct 2022	14	0	14	Verified or annual reports
Nov 2022	10	0	10	Verified or annual reports
Dec 2022	3	0	3	Verified or annual reports
Jan 2023	6	0	6	Verified or annual reports
Feb 2023	0	0	0
Mar 2023	1	1	2	Verified or annual reports
Apr 2023	13	0	13	Verified or annual reports
May 2023	7	0	7	Verified or annual reports
Jun 2023	30	0	30	Verified or annual reports
Jul 2023	37	0	37	Verified or annual reports
Aug 2023	10	0	10	Verified or annual reports
Sep 2023	17	1	18	Verified or annual reports
Oct 2023	4	0	4	Verified or annual reports
Nov 2023	2	0	2	Verified or annual reports
Dec 2023	18	0	18	Verified or annual reports
Jan 2024	18	0	18	Verified or annual reports
Feb 2024	3	0	3	Verified or annual reports
Mar 2024	19	0	19	Verified or annual reports
Apr 2024	3	0	3	Verified or annual reports
May 2024	9	0	9	Verified or annual reports
Jun 2024	15	0	15	Verified or annual reports
Jul 2024	4	0	4	Verified or annual reports
Aug 2024	0	0	0
Sep 2024	0	0	0
Oct 2024	0	0	0
Nov 2024	0	0	0
Dec 2024	6	0	6	Verified or annual reports
Jan 2025	1	0	1	Verified or annual reports
Feb 2025	0	0	0
Mar 2025	15	0	15	Verified or annual reports
Apr 2025	0	0	0
May 2025	14	0	14	Verified or annual reports
Jun 2025	0	0	0
Jul 2025	9	0	9	Verified or annual reports
Aug 2025	0	0	0
Sep 2025	5	0	5	Verified or annual reports
Oct 2025	1	0	1	Verified or annual reports
Nov 2025	0	0	0
Dec 2025	1	0	1	Verified or annual reports
Jan 2026	0	0	0
Feb 2026	0	0	0
Mar 2026	1	0	1	Verified or annual reports
Apr 2026	4	0	4	Verified or annual reports
May 2026	0	0	0
Jun 2026	4	0	4	Verified or annual reports
Jul 2026	15	0	15	Verified or annual reports
Aug 2026	4	1	5	Verified or annual reports
Sep 2026	4	0	4	Verified or annual reports
Oct 2026	2	0	2	Public notices (no report yet)
Nov 2026	0	0	0

Hours under advisory per month

Hours this water was under an advisory, by the map's red rules.

Advisory in effect
No source
Partly covered or sparse source

No source covers 2022-01 to 2022-04. 2 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here. MassDEP portal records begin 2022-06-30. Verified Data Reports arrive after the month ends, so the latest months count public notices.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table

Hours under advisory per month
Month	Hours under advisory	From discharge windows	Hours in month	Coverage
Jan 2022	0	0	744	No source
Feb 2022	0	0	672	No source
Mar 2022	0	0	744	No source
Apr 2022	0	0	720	No source
May 2022	0	0	744	Partly covered or sparse source
Jun 2022	0	0	720	Partly covered or sparse source
Jul 2022	216	216	744
Aug 2022	172	172	744
Sep 2022	236	236	720
Oct 2022	243	243	744
Nov 2022	141	141	720
Dec 2022	81	81	744
Jan 2023	104	104	744
Feb 2023	0	0	672
Mar 2023	89	89	744
Apr 2023	174	174	720
May 2023	66	66	744
Jun 2023	322	322	720
Jul 2023	499	499	744
Aug 2023	165	165	744
Sep 2023	196	196	720
Oct 2023	109	109	744
Nov 2023	52	52	720
Dec 2023	178	178	744
Jan 2024	207	207	744
Feb 2024	48	48	696
Mar 2024	263	263	744
Apr 2024	97	97	720
May 2024	107	107	744
Jun 2024	170	170	720
Jul 2024	99	99	744
Aug 2024	0	0	744
Sep 2024	0	0	720
Oct 2024	0	0	744
Nov 2024	0	0	720
Dec 2024	105	105	744
Jan 2025	48	48	744
Feb 2025	0	0	672
Mar 2025	141	141	744
Apr 2025	27	27	720
May 2025	121	121	744
Jun 2025	39	39	720
Jul 2025	185	185	744
Aug 2025	0	0	744
Sep 2025	97	97	720
Oct 2025	27	27	744
Nov 2025	22	22	720
Dec 2025	48	48	744
Jan 2026	0	0	744
Feb 2026	0	0	672
Mar 2026	48	48	744
Apr 2026	79	79	720
May 2026	0	0	744
Jun 2026	24	24	720
Jul 2026	182	182	744
Aug 2026	53	53	744
Sep 2026	48	48	720
Oct 2026	0	0	744
Nov 2026	0	0	32

Days with a discharge per month

A day counts when any counted discharge was under way on it (start to reported end, local time); an event with no end counts its start day.

No source
Partly covered or sparse source

No source covers 2022-01 to 2022-04.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table

Days with a discharge per month
Month	Days with a discharge	Coverage
Jan 2022	0	No source
Feb 2022	0	No source
Mar 2022	0	No source
Apr 2022	0	No source
May 2022	0	Partly covered or sparse source
Jun 2022	0	Partly covered or sparse source
Jul 2022	5
Aug 2022	4
Sep 2022	4
Oct 2022	5
Nov 2022	3
Dec 2022	1
Jan 2023	2
Feb 2023	0
Mar 2023	2
Apr 2023	3
May 2023	2
Jun 2023	6
Jul 2023	10
Aug 2023	3
Sep 2023	5
Oct 2023	2
Nov 2023	1
Dec 2023	4
Jan 2024	5
Feb 2024	1
Mar 2024	6
Apr 2024	2
May 2024	2
Jun 2024	3
Jul 2024	2
Aug 2024	0
Sep 2024	0
Oct 2024	0
Nov 2024	0
Dec 2024	2
Jan 2025	1
Feb 2025	0
Mar 2025	4
Apr 2025	0
May 2025	3
Jun 2025	0
Jul 2025	4
Aug 2025	0
Sep 2025	2
Oct 2025	1
Nov 2025	0
Dec 2025	1
Jan 2026	0
Feb 2026	0
Mar 2026	1
Apr 2026	2
May 2026	0
Jun 2026	1
Jul 2026	4
Aug 2026	1
Sep 2026	1
Oct 2026	1
Nov 2026	0

Reported volume per year

Gallons, summed from the 385 events that gave a number (2 did not).

Partly covered or sparse source

2 of 387 events gave no volume as a number; only numbers are summed.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table

Reported volume per year
Year	Gallons	Events with a number	Events without	Coverage
2022	9,674,612	82	0	Partly covered or sparse source
2023	23,769,390	147	0
2024	11,105,417	77	0
2025	5,029,033	46	0
2026	5,650,796	33	2

Hours under advisory per year

Hours under advisory each year; 2026 to date.

Advisory in effect
Partly covered or sparse source

2 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table

Hours under advisory per year
Year	Hours under advisory	Share of the year	Coverage
2022	1,088	12.4%	Partly covered or sparse source
2023	1,953	22.3%
2024	1,096	12.5%
2025	755	8.6%
2026	434	5.9%

Share of the May to October season under advisory

Share of the hours from May 1 to October 31 with an advisory in effect.

Advisory in effect
Season partly covered

Seasons only partly covered by a source: 2022 (share is of the covered hours). 2 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table

Share of the May to October season under advisory
Season	Share under advisory	Hours under advisory	Hours covered	Season hours	Partly covered
2022	29.3%	866	2,958	4,416	yes
2023	30.7%	1,356	4,416	4,416
2024	8.5%	376	4,416	4,416
2025	10.6%	470	4,416	4,416
2026	7.0%	307	4,416	4,416

Discharge events by calendar month, all years

Every counted discharge event, by the calendar month it began.

Months are summed over every year a source covers; the table gives the number of years behind each month.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table

Discharge events by calendar month, all years
Month	Events	Years of records
Jan	25	4
Feb	3	4
Mar	37	4
Apr	20	4
May	30	4
Jun	49	5
Jul	93	5
Aug	24	5
Sep	45	5
Oct	21	5
Nov	12	5
Dec	28	4

Discharge events by outfall

The 10 outfalls with the most events of 10, all years.

MassDEP portal records begin 2022-06-30. Verified Data Reports arrive after the month ends, so the latest months count public notices.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table

Discharge events by outfall
Outfall	Discharger	Events
CHI27 PARKING LOT, TOPORS GARAGE & FRONT ST	CITY OF CHICOPEE	61
CHI32B MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	CITY OF CHICOPEE	59
SPR034 MAIN ST.	SPRINGFIELD WATER & SEWER COMMISSION	54
CHI34 GRATTAN ST & HEARTHSTONE TER	CITY OF CHICOPEE	53
CHI37 EAST MAIN ST #227	CITY OF CHICOPEE	40
SPR035 FRONT & OAK ST.	SPRINGFIELD WATER & SEWER COMMISSION	35
SPR036A PINEVALE & WATER ST	SPRINGFIELD WATER & SEWER COMMISSION	35
SPR037 CEDAR ST.	SPRINGFIELD WATER & SEWER COMMISSION	21
CHI26 BELL & FRONT ST.	CITY OF CHICOPEE	20
CHI42 ROBERTS POND	CITY OF CHICOPEE	6
Outfall not stated		3

Reported monthly totals: EPA ECHO discharge monitoring reports (monthly CSO totals)

Monthly totals each permittee files with EPA per outfall (discharge monitoring reports). They describe the same discharges the state notices report, so they are shown here and never added to the event counts. A month with no row counts as zero inside the span. Sum of 2 reporting dischargers. Source: EPA ECHO discharge monitoring reports (monthly CSO totals). Covered 2024-01-01 to 2026-09-30.

Discharge events reported

Events per month.

Show table

Discharge events reported
Month	Discharge events reported
Jan 2024	12
Feb 2024	5
Mar 2024	21
Apr 2024	17
May 2024	19
Jun 2024	31
Jul 2024	15
Aug 2024	22
Sep 2024	6
Oct 2024	1
Nov 2024	8
Dec 2024	12
Jan 2025	5
Feb 2025	11
Mar 2025	20
Apr 2025	9
May 2025	31
Jun 2025	16
Jul 2025	22
Aug 2025	8
Sep 2025	15
Oct 2025	11
Nov 2025	11
Dec 2025	7
Jan 2026	1
Feb 2026	5
Mar 2026	16
Apr 2026	17
May 2026	7
Jun 2026	10
Jul 2026	24
Aug 2026	23
Sep 2026	12

Hours of discharge reported

Hours per month.

Show table

Hours of discharge reported
Month	Hours of discharge reported
Jan 2024	1 h
Feb 2024	0 h
Mar 2024	2 h
Apr 2024	0 h
May 2024	1 h
Jun 2024	2 h
Jul 2024	0 h
Aug 2024	0 h
Sep 2024	0 h
Oct 2024	0 h
Nov 2024	0 h
Dec 2024	0 h
Jan 2025	0 h
Feb 2025	0 h
Mar 2025	1 h
Apr 2025	0 h
May 2025	2 h
Jun 2025	0 h
Jul 2025	1 h
Aug 2025	0 h
Sep 2025	1 h
Oct 2025	1 h
Nov 2025	0 h
Dec 2025	0 h
Jan 2026	0 h
Feb 2026	0 h
Mar 2026	0 h
Apr 2026	1 h
May 2026	0 h
Jun 2026	0 h
Jul 2026	2 h
Aug 2026	4 h
Sep 2026	0 h

How these charts are counted

Discharge events are counted once: where a source publishes both public notices and verified reports (MassDEP, Vermont DEC), a discharger's month with any verified report counts its verified reports only, and other months count notices. Revisions are folded into the record they revise, and EPA copies of a state report are not counted twice. Monthly and yearly totals (Maine DEP, EPA discharge monitoring reports, Portsmouth) are shown on their own and never added to the event counts. Hours under advisory follow the map's red rules. A muted band marks periods no source covers: a gap there is missing data, not a quiet month.

EPA ECHO sewer overflow events: 2022-05-03 to now (sparse)
MassDEP sewage notification portal: 2022-06-30 to now

Every event on Chicopee River

Events placed on Chicopee River, newest first
Start	End	Discharger	Outfall	Type	Volume	Source	Links
Oct 11, 2026, 6:10 PM EDT	ended, time not reported	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflow	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b3e45436-6c03-4743-a0ed-ec4616959650, published Oct 12, 2026, 9:19 AM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Oct 11, 2026, 6:10 PM EDT · Map
Oct 11, 2026, 5:50 PM EDT	ended, time not reported	SPRINGFIELD WATER & SEWER COMMISSION	SPR035 FRONT & OAK ST.	Combined sewer overflow	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 32df199c-5b11-4024-8ee6-6390cdbb5a85, published Oct 12, 2026, 9:18 AM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Oct 11, 2026, 5:50 PM EDT · Map
Sep 1, 2026, 8:40 AM EDT	Sep 1, 2026, 8:50 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR037 CEDAR ST.	Combined sewer overflow	11,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record da4b834d-19a2-4618-9c9d-776d14a5ae24, published Oct 8, 2026, 12:57 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Sep 1, 2026, 8:40 AM EDT · Map
Sep 1, 2026, 8:40 AM EDT	Sep 1, 2026, 8:50 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR037 CEDAR ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 56cb0f52-004b-4c57-b708-bb4a2c730b27, published Oct 8, 2026, 12:56 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Sep 1, 2026, 8:40 AM EDT · Map
Sep 1, 2026, 8:40 AM EDT	Sep 1, 2026, 8:50 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflow	65,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record de6fd0ae-8549-4047-acd9-77062c6b1d81, published Oct 8, 2026, 12:55 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Sep 1, 2026, 8:40 AM EDT · Map
Sep 1, 2026, 8:40 AM EDT	Sep 1, 2026, 8:50 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3d474754-28d2-47a0-a5fa-75031bc5e5bd, published Oct 8, 2026, 12:54 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Sep 1, 2026, 8:40 AM EDT · Map
Sep 1, 2026, 8:35 AM EDT	Sep 1, 2026, 8:55 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR035 FRONT & OAK ST.	Combined sewer overflow	51,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 9da09745-001b-4d3a-b174-3447e55a72ed, published Oct 8, 2026, 12:52 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Sep 1, 2026, 8:35 AM EDT · Map
Sep 1, 2026, 8:35 AM EDT	Sep 1, 2026, 9:00 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflow	42,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f5b30f10-621a-49ac-b0b9-b5f111f225ff, published Oct 8, 2026, 12:51 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Sep 1, 2026, 8:35 AM EDT · Map
Sep 1, 2026, 8:35 AM EDT	Sep 1, 2026, 8:55 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR035 FRONT & OAK ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record cf3eb817-b248-4b5c-a52f-55edefc936fb, published Sep 2, 2026, 8:24 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Sep 1, 2026, 8:35 AM EDT · Map
Sep 1, 2026, 8:35 AM EDT	Sep 1, 2026, 9:00 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f888da99-bfed-4c4e-bffc-b57933faa773, published Sep 2, 2026, 8:23 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Sep 1, 2026, 8:35 AM EDT · Map
August 2026	September 2026	Springfield Water and Sewer Commission	034 MAIN ST.	Combined sewer overflow	“1 discharge event(s); 0.42 hr of discharge; 42000 gal/d (DAILY MX; monthly-total semantics unconfirmed)”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101613:034:2026-09, reported Oct 8, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, Springfield Water and Sewer Commission, August 2026 · Map
August 2026	September 2026	City of Chicopee (Water Pollution Control)	32A MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflow	“2 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:32A:2026-09, reported Oct 7, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), August 2026 · Map
August 2026	September 2026	City of Chicopee (Water Pollution Control)	037 EAST MAIN ST #227	Combined sewer overflow	“1 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:037:2026-09, reported Oct 7, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), August 2026 · Map
August 2026	September 2026	City of Chicopee (Water Pollution Control)	034 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflow	“3 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:034:2026-09, reported Oct 7, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), August 2026 · Map
August 2026	September 2026	City of Chicopee (Water Pollution Control)	027 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflow	“5 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:027:2026-09, reported Oct 7, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), August 2026 · Map
Aug 3, 2026, 6:00 AM EDT	Aug 3, 2026, 8:30 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	not stated	Sanitary sewer overflow	200,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 861cea41-a729-46bf-93b0-9473116edfc4, published Sep 8, 2026, 9:07 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Sanitary sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Aug 3, 2026, 6:00 AM EDT · Map
Aug 3, 2026, 6:00 AM EDT	ended, time not reported	SPRINGFIELD WATER & SEWER COMMISSION	not stated	Sanitary sewer overflow	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 9df9b3bf-a686-4a52-8c04-e738de7478a8, published Aug 5, 2026, 3:16 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Sanitary sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Aug 3, 2026, 6:00 AM EDT · Map
Aug 3, 2026, 4:35 AM EDT	Aug 3, 2026, 7:20 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR037 CEDAR ST.	Combined sewer overflow	997,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 45e3038b-dc55-4874-8966-8a631b64904b, published Sep 8, 2026, 8:28 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Aug 3, 2026, 4:35 AM EDT · Map
Aug 3, 2026, 4:35 AM EDT	Aug 3, 2026, 7:30 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflow	38,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 743af911-8784-4360-bdab-58e51a2173a0, published Sep 8, 2026, 8:27 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Aug 3, 2026, 4:35 AM EDT · Map
Aug 3, 2026, 4:35 AM EDT	Aug 3, 2026, 7:20 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR035 FRONT & OAK ST.	Combined sewer overflow	1.32 million gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3e0b21a9-5f38-4c78-a939-f96eae121ce0, published Sep 8, 2026, 8:26 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Aug 3, 2026, 4:35 AM EDT · Map
Aug 3, 2026, 4:35 AM EDT	Aug 3, 2026, 7:20 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR037 CEDAR ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 18b8d0fb-e046-482d-920d-17d245338f9e, published Aug 3, 2026, 3:37 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Aug 3, 2026, 4:35 AM EDT · Map
Aug 3, 2026, 4:35 AM EDT	Aug 3, 2026, 7:30 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6a5494be-a7cc-4694-afed-a6b8541987b9, published Aug 3, 2026, 1:51 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Aug 3, 2026, 4:35 AM EDT · Map
Aug 3, 2026, 4:35 AM EDT	Aug 3, 2026, 7:20 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR035 FRONT & OAK ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3ba155f5-12b2-4cf2-8ae4-c8e9defd432f, published Aug 3, 2026, 1:50 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Aug 3, 2026, 4:35 AM EDT · Map
Aug 3, 2026, 3:25 AM EDT	Aug 3, 2026, 7:00 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflow	976,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3cedc26f-09c2-49aa-b588-9acd58173b12, published Sep 8, 2026, 8:25 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Aug 3, 2026, 3:25 AM EDT · Map
Aug 3, 2026, 3:25 AM EDT	Aug 3, 2026, 7:00 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0a4a4aac-728f-4b52-8e0a-852a9609c89d, published Aug 3, 2026, 12:06 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Aug 3, 2026, 3:25 AM EDT · Map
July 2026	August 2026	Springfield Water and Sewer Commission	034 MAIN ST.	Combined sewer overflow	“1 discharge event(s); 3.6 hr of discharge; 976000 gal/d (DAILY MX; monthly-total semantics unconfirmed)”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101613:034:2026-08, reported Sep 7, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, Springfield Water and Sewer Commission, July 2026 · Map
July 2026	August 2026	City of Chicopee (Water Pollution Control)	32A MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflow	“5 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:32A:2026-08, reported Sep 2, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), July 2026 · Map
July 2026	August 2026	City of Chicopee (Water Pollution Control)	042 CHICOPEE ST NEAR 116 BRIDGE MANHOLE #11	Combined sewer overflow	“1 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:042:2026-08, reported Sep 2, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), July 2026 · Map
July 2026	August 2026	City of Chicopee (Water Pollution Control)	037 EAST MAIN ST #227	Combined sewer overflow	“3 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:037:2026-08, reported Sep 2, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), July 2026 · Map
July 2026	August 2026	City of Chicopee (Water Pollution Control)	034 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflow	“3 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:034:2026-08, reported Sep 2, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), July 2026 · Map
July 2026	August 2026	City of Chicopee (Water Pollution Control)	027 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflow	“8 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:027:2026-08, reported Sep 2, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), July 2026 · Map
July 2026	August 2026	City of Chicopee (Water Pollution Control)	026 BELL & FRONT ST.	Combined sewer overflow	“2 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:026:2026-08, reported Sep 2, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), July 2026 · Map
Jul 29, 2026, 3:50 PM EDT	Jul 29, 2026, 4:30 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflow	255,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6064950c-5054-4adc-a72a-64ab85594435, published Aug 6, 2026, 10:14 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 29, 2026, 3:50 PM EDT · Map
Jul 29, 2026, 3:50 PM EDT	Jul 29, 2026, 4:30 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7b163a7e-67c4-416c-b25f-9d8f191a9d30, published Jul 30, 2026, 8:45 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 29, 2026, 3:50 PM EDT · Map
Jul 29, 2026, 3:45 PM EDT	Jul 29, 2026, 4:05 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR037 CEDAR ST.	Combined sewer overflow	137,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f0e21e79-a120-4f9e-9e75-269e4a117f84, published Aug 6, 2026, 10:24 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 29, 2026, 3:45 PM EDT · Map
Jul 29, 2026, 3:45 PM EDT	Jul 29, 2026, 4:05 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR037 CEDAR ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 78c045e4-7df5-4f54-8c3d-447733331dab, published Aug 6, 2026, 10:22 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 29, 2026, 3:45 PM EDT · Map
Jul 29, 2026, 3:45 PM EDT	Jul 29, 2026, 4:25 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR035 FRONT & OAK ST.	Combined sewer overflow	191,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4ba168e0-039f-4875-a121-a3ebc4b91fbd, published Aug 6, 2026, 10:12 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 29, 2026, 3:45 PM EDT · Map
Jul 29, 2026, 3:45 PM EDT	Jul 29, 2026, 4:25 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR035 FRONT & OAK ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7a0dab62-a53f-4565-a54f-1f6528926db9, published Aug 6, 2026, 10:10 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 29, 2026, 3:45 PM EDT · Map
Jul 29, 2026, 3:45 PM EDT	Jul 29, 2026, 4:35 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflow	101,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a3d0f62d-104c-46e4-a4bf-a451767e8d8b, published Aug 6, 2026, 10:02 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 29, 2026, 3:45 PM EDT · Map
Jul 29, 2026, 3:45 AM EDT	ended, time not reported	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflow	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 752ec8ef-a00f-4c19-9652-e00ff32df158, published Jul 30, 2026, 8:44 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 29, 2026, 3:45 AM EDT · Map
Jul 22, 2026, 12:00 AM EDT	Jul 22, 2026, 12:00 AM EDT	CITY OF CHICOPEE	CHI37 EAST MAIN ST #227	Combined sewer overflow	0 gal	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 75fe018f-a778-4319-965a-835a441e8edf, published Sep 1, 2026, 10:13 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 22, 2026, 12:00 AM EDT · Map
Jul 22, 2026, 12:00 AM EDT	Jul 22, 2026, 12:00 AM EDT	CITY OF CHICOPEE	CHI34 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflow	0 gal	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ec9fc0bc-820e-49cc-a466-7ca2ba26b4f3, published Sep 1, 2026, 10:12 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 22, 2026, 12:00 AM EDT · Map
Jul 22, 2026, 12:00 AM EDT	Jul 22, 2026, 2:15 AM EDT	CITY OF CHICOPEE	CHI32B MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflow	5,190 gal	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f46a4b0a-2c31-421e-ad28-195a0d9ddee2, published Sep 1, 2026, 10:11 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 22, 2026, 12:00 AM EDT · Map
Jul 22, 2026, 12:00 AM EDT	Jul 22, 2026, 12:00 AM EDT	CITY OF CHICOPEE	CHI27 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflow	0 gal	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4055ea5c-17c0-48d3-b01a-ddda040f6aaf, published Sep 1, 2026, 10:10 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 22, 2026, 12:00 AM EDT · Map
Jul 22, 2026, 12:00 AM EDT	Jul 22, 2026, 12:00 AM EDT	CITY OF CHICOPEE	CHI37 EAST MAIN ST #227	Combined sewer overflowrevised	not reported	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0e46b97f-acab-404e-87b1-81b8ccaf958b, published Jul 29, 2026, 12:48 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 22, 2026, 12:00 AM EDT · Map
Jul 22, 2026, 12:00 AM EDT	Jul 22, 2026, 12:00 AM EDT	CITY OF CHICOPEE	CHI34 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflowrevised	not reported	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c96d7e2a-79c9-4250-b2d0-95afa5cff781, published Jul 29, 2026, 12:47 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 22, 2026, 12:00 AM EDT · Map
Jul 22, 2026, 12:00 AM EDT	Jul 22, 2026, 2:15 AM EDT	CITY OF CHICOPEE	CHI32B MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflowrevised	not reported	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 23bc92d0-3341-401a-8738-2289977bf703, published Jul 29, 2026, 12:46 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 22, 2026, 12:00 AM EDT · Map
Jul 22, 2026, 12:00 AM EDT	Jul 22, 2026, 12:00 AM EDT	CITY OF CHICOPEE	CHI27 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflowrevised	not reported	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c74c94b8-1575-46d5-805c-ef311db3cee7, published Jul 29, 2026, 12:45 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 22, 2026, 12:00 AM EDT · Map
Jul 21, 2026, 3:50 PM EDT	Jul 21, 2026, 4:20 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR037 CEDAR ST.	Combined sewer overflow	176,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record fe2ab995-278e-40b9-803d-c85ac542b34c, published Aug 6, 2026, 10:20 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 21, 2026, 3:50 PM EDT · Map
Jul 21, 2026, 3:50 PM EDT	Jul 21, 2026, 4:30 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR035 FRONT & OAK ST.	Combined sewer overflow	516,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 8b461b30-6a6b-49ea-b126-a0de9007f7a8, published Aug 6, 2026, 10:08 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 21, 2026, 3:50 PM EDT · Map
Jul 21, 2026, 3:50 PM EDT	Jul 21, 2026, 4:30 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR035 FRONT & OAK ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 771cc4c1-4e68-444d-a52d-d875ef3423e8, published Jul 22, 2026, 8:30 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 21, 2026, 3:50 PM EDT · Map
Jul 21, 2026, 3:50 PM EDT	Jul 21, 2026, 4:20 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR037 CEDAR ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1ddbe998-515a-4f2d-b8b4-755a44ba9638, published Jul 22, 2026, 8:16 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 21, 2026, 3:50 PM EDT · Map
Jul 21, 2026, 3:45 PM EDT	Jul 21, 2026, 4:25 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflow	244,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 798d94ac-e37b-4eef-b869-345c86e59dde, published Aug 6, 2026, 10:13 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 21, 2026, 3:45 PM EDT · Map
Jul 21, 2026, 3:45 PM EDT	Jul 21, 2026, 4:35 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflow	76,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 159d2bc2-2038-411a-952c-8b90b0b5638f, published Aug 6, 2026, 10:00 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 21, 2026, 3:45 PM EDT · Map
Jul 21, 2026, 3:45 PM EDT	Jul 21, 2026, 4:25 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2bd7f7f1-eacc-4376-89e3-c5166c4cb948, published Jul 22, 2026, 8:26 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 21, 2026, 3:45 PM EDT · Map
Jul 21, 2026, 3:45 PM EDT	Jul 21, 2026, 4:35 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 935c2ebb-0210-42d1-a55f-7093f06b0c89, published Jul 22, 2026, 8:25 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jul 21, 2026, 3:45 PM EDT · Map
Jul 2, 2026, 12:00 AM EDT	Jul 2, 2026, 12:00 AM EDT	CITY OF CHICOPEE	CHI34 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflow	0 gal	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 9d2ca31b-091d-4041-9b1e-c9bcf45f9a85, published Sep 1, 2026, 10:05 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 2, 2026, 12:00 AM EDT · Map
Jul 2, 2026, 12:00 AM EDT	Jul 2, 2026, 2:15 AM EDT	CITY OF CHICOPEE	CHI32B MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflow	5,190 gal	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record cc337bff-0687-44b2-af9c-4bf43e1bc581, published Sep 1, 2026, 10:03 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 2, 2026, 12:00 AM EDT · Map
Jul 2, 2026, 12:00 AM EDT	Jul 2, 2026, 12:00 AM EDT	CITY OF CHICOPEE	CHI27 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflow	0 gal	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 86437da6-3e74-45cc-85c7-f969a222ede5, published Sep 1, 2026, 10:02 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 2, 2026, 12:00 AM EDT · Map
Jul 2, 2026, 12:00 AM EDT	Jul 2, 2026, 12:00 AM EDT	CITY OF CHICOPEE	CHI34 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflowrevised	not reported	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 65ccb0ef-0cde-418d-90d2-48fdffed271a, published Jul 2, 2026, 11:34 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 2, 2026, 12:00 AM EDT · Map
Jul 2, 2026, 12:00 AM EDT	Jul 2, 2026, 2:15 AM EDT	CITY OF CHICOPEE	CHI32B MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflowrevised	not reported	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 8b4073aa-4e54-41e0-89a1-25f02d00ef9f, published Jul 2, 2026, 11:33 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 2, 2026, 12:00 AM EDT · Map
Jul 2, 2026, 12:00 AM EDT	Jul 2, 2026, 12:00 AM EDT	CITY OF CHICOPEE	CHI27 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflowrevised	not reported	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 9fad036b-264d-4542-8cd7-978417a93920, published Jul 2, 2026, 11:32 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jul 2, 2026, 12:00 AM EDT · Map
June 2026	July 2026	Springfield Water and Sewer Commission	034 MAIN ST.	Combined sewer overflow	“2 discharge event(s); 1.7 hr of discharge; 177000 gal/d (DAILY MX; monthly-total semantics unconfirmed)”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101613:034:2026-07, reported Aug 5, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, Springfield Water and Sewer Commission, June 2026 · Map
June 2026	July 2026	City of Chicopee (Water Pollution Control)	32A MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflow	“5 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:32A:2026-07, reported Aug 5, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), June 2026 · Map
June 2026	July 2026	City of Chicopee (Water Pollution Control)	042 CHICOPEE ST NEAR 116 BRIDGE MANHOLE #11	Combined sewer overflow	“1 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:042:2026-07, reported Aug 5, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), June 2026 · Map
June 2026	July 2026	City of Chicopee (Water Pollution Control)	037 EAST MAIN ST #227	Combined sewer overflow	“2 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:037:2026-07, reported Aug 5, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), June 2026 · Map
June 2026	July 2026	City of Chicopee (Water Pollution Control)	034 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflow	“6 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:034:2026-07, reported Aug 5, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), June 2026 · Map
June 2026	July 2026	City of Chicopee (Water Pollution Control)	027 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflow	“7 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:027:2026-07, reported Aug 5, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), June 2026 · Map
June 2026	July 2026	City of Chicopee (Water Pollution Control)	026 BELL & FRONT ST.	Combined sewer overflow	“1 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:026:2026-07, reported Aug 5, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), June 2026 · Map
Jun 30, 2026, 7:20 PM EDT	Jun 30, 2026, 7:25 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflow	1,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 5dde3976-eb6f-4150-9def-dc13b2eda6f4, published Jul 6, 2026, 1:40 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jun 30, 2026, 7:20 PM EDT · Map
Jun 30, 2026, 7:20 PM EDT	Jun 30, 2026, 7:25 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record fb51b460-e020-4eec-aa37-525547f6bbc2, published Jul 6, 2026, 1:39 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, SPRINGFIELD WATER & SEWER COMMISSION, Jun 30, 2026, 7:20 PM EDT · Map
Jun 30, 2026, 12:00 AM EDT	Jun 30, 2026, 1:15 AM EDT	CITY OF CHICOPEE	CHI34 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflow	9,336 gal	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record e9bf4a27-8875-49c7-a379-95ebefe89a20, published Sep 1, 2026, 9:55 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jun 30, 2026, 12:00 AM EDT · Map
Jun 30, 2026, 12:00 AM EDT	Jun 30, 2026, 3:30 AM EDT	CITY OF CHICOPEE	CHI32B MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflow	23,148 gal	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b8855f1c-4773-4553-9d68-dce373ac7d88, published Sep 1, 2026, 9:54 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jun 30, 2026, 12:00 AM EDT · Map
Jun 30, 2026, 12:00 AM EDT	Jun 30, 2026, 2:00 AM EDT	CITY OF CHICOPEE	CHI27 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflow	151,932 gal	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 83f7bb19-64ce-479f-82dd-863b7eb7e0bd, published Sep 1, 2026, 9:53 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jun 30, 2026, 12:00 AM EDT · Map
Jun 30, 2026, 12:00 AM EDT	Jun 30, 2026, 1:15 AM EDT	CITY OF CHICOPEE	CHI34 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflowrevised	not reported	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7b5f2a4b-26aa-42ff-a060-eee58863fad0, published Jul 1, 2026, 1:36 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jun 30, 2026, 12:00 AM EDT · Map
Jun 30, 2026, 12:00 AM EDT	Jun 30, 2026, 3:30 AM EDT	CITY OF CHICOPEE	CHI32B MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflowrevised	not reported	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 09cd77b6-8683-4222-aecc-54b4d0e0f0f1, published Jul 1, 2026, 1:35 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jun 30, 2026, 12:00 AM EDT · Map
Jun 30, 2026, 12:00 AM EDT	Jun 30, 2026, 2:00 AM EDT	CITY OF CHICOPEE	CHI27 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflowrevised	not reported	CITY OF CHICOPEE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ad36361b-7534-4fba-89f8-6695ec6e00fe, published Jul 1, 2026, 1:34 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	Event: Combined sewer overflow, CITY OF CHICOPEE, Jun 30, 2026, 12:00 AM EDT · Map
May 2026	June 2026	Springfield Water and Sewer Commission	034 MAIN ST.	Combined sewer overflow	“1 discharge event(s); 0.1 hr of discharge; 1000 gal/d (DAILY MX; monthly-total semantics unconfirmed)”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101613:034:2026-06, reported Jul 7, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, Springfield Water and Sewer Commission, May 2026 · Map
May 2026	June 2026	City of Chicopee (Water Pollution Control)	32A MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflow	“2 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:32A:2026-06, reported Jul 8, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), May 2026 · Map
May 2026	June 2026	City of Chicopee (Water Pollution Control)	037 EAST MAIN ST #227	Combined sewer overflow	“1 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:037:2026-06, reported Jul 8, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), May 2026 · Map
May 2026	June 2026	City of Chicopee (Water Pollution Control)	034 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflow	“3 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:034:2026-06, reported Jul 8, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), May 2026 · Map
May 2026	June 2026	City of Chicopee (Water Pollution Control)	027 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflow	“3 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:027:2026-06, reported Jul 8, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	Event: Combined sewer overflow, City of Chicopee (Water Pollution Control), May 2026 · Map
April 2026	May 2026	City of Chicopee (Water Pollution Control)	32A MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflow	“2 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:32A:2026-05, reported Jun 10, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
April 2026	May 2026	City of Chicopee (Water Pollution Control)	034 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflow	“2 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:034:2026-05, reported Jun 10, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
April 2026	May 2026	City of Chicopee (Water Pollution Control)	027 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflow	“3 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:027:2026-05, reported Jun 10, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
Apr 16, 2026, 3:00 AM EDT	Apr 16, 2026, 3:05 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflow	10,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 10e86424-6ab3-43eb-9cdc-bf66861efb61, published May 7, 2026, 1:11 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
Apr 16, 2026, 3:00 AM EDT	Apr 16, 2026, 3:05 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record dacd47e1-2ab7-4607-ab68-814befa64204, published May 7, 2026, 1:09 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
Apr 16, 2026, 2:55 AM EDT	Apr 16, 2026, 3:20 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflow	16,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2eca658f-ac48-4f53-b0d3-a64d22d4125b, published May 7, 2026, 1:02 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
Apr 16, 2026, 2:55 AM EDT	Apr 16, 2026, 3:20 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6133f277-6f79-4b96-955c-edafa6f650c1, published Apr 16, 2026, 9:26 AM EDT, retrieved 2026-11-02 10:58 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
Apr 14, 2026, 8:15 PM EDT	Apr 14, 2026, 8:20 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflow	11,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7ed6d6f4-84d2-4186-a86e-7a3d15f45621, published May 7, 2026, 1:10 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
Apr 14, 2026, 8:15 PM EDT	Apr 14, 2026, 8:20 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4c3c7e90-51f2-44f8-bcc6-28ab9d69bce1, published May 7, 2026, 1:08 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
Apr 14, 2026, 8:10 PM EDT	Apr 14, 2026, 8:35 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflow	18,000 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record bee7d177-85c1-460b-9630-af8eb1ac47f7, published May 7, 2026, 1:01 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
Apr 14, 2026, 8:10 PM EDT	Apr 14, 2026, 8:35 PM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR034 MAIN ST.	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4faf8381-d25b-4bed-af86-84d8a318be60, published Apr 15, 2026, 12:22 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
March 2026	April 2026	Springfield Water and Sewer Commission	034 MAIN ST.	Combined sewer overflow	“2 discharge event(s); 0.8 hr of discharge; 34000 gal/d (DAILY MX; monthly-total semantics unconfirmed)”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101613:034:2026-04, reported May 6, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
March 2026	April 2026	City of Chicopee (Water Pollution Control)	32A MAIN STREET WEST OF DEADY MEMORIAL BRIDGE	Combined sewer overflow	“2 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:32A:2026-04, reported May 6, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
March 2026	April 2026	City of Chicopee (Water Pollution Control)	037 EAST MAIN ST #227	Combined sewer overflow	“3 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:037:2026-04, reported May 6, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
March 2026	April 2026	City of Chicopee (Water Pollution Control)	034 GRATTAN ST & HEARTHSTONE TER	Combined sewer overflow	“2 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:034:2026-04, reported May 6, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
March 2026	April 2026	City of Chicopee (Water Pollution Control)	027 PARKING LOT, TOPORS GARAGE & FRONT ST	Combined sewer overflow	“8 discharge event(s); NODI duration Q, flow Q”	EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), record MA0101508:027:2026-04, reported May 6, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
Mar 12, 2026, 1:45 AM EDT	Mar 12, 2026, 1:45 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflow	0 gal	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record abc0b9a8-2a90-43ff-9dc2-96cfff16797d, published Apr 7, 2026, 2:17 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list
Mar 12, 2026, 1:45 AM EDT	Mar 12, 2026, 1:45 AM EDT	SPRINGFIELD WATER & SEWER COMMISSION	SPR036A PINEVALE & WATER ST	Combined sewer overflowrevised	not reported	SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d38319bb-9346-456d-95af-cbabd3daada1, published Mar 12, 2026, 1:05 PM EDT, retrieved 2026-11-02 10:58 UTC · notice	record below · Map
Full record (older than 180 days, so no page of its own) This record in the archive list

Showing the newest 100 events of 922 events. See them all with filters.

Outfalls on this water

No outfall in the registry is matched to this water.

Dischargers: City of Chicopee (Water Pollution Control), Springfield Water and Sewer Commission.

Launches

Chicopee River Carry in Access Wilbraham

Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, ODbL). · Chicopee River on OpenBoatLaunch

Sources covering this water

ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall) · updating · last answered Nov 2, 2026, 6:54 AM EST
ECHO NPDES Sewer Overflow and Bypass Event Dataset (eRule Phase 2, current versions) · updating · last answered Nov 2, 2026, 6:54 AM EST
MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/) · updating · last answered Nov 2, 2026, 6:54 AM EST

922 events placed on this water in this build.

Month	Events	Years of records
Jan	25	4
Feb	3	4
Mar	37	4
Apr	20	4
May	30	4
Jun	49	5
Jul	93	5
Aug	24	5
Sep	45	5
Oct	21	5
Nov	12	5
Dec	28	4

Month	Events	Years of records
Jan	25	4
Feb	3	4
Mar	37	4
Apr	20	4
May	30	4
Jun	49	5
Jul	93	5
Aug	24	5
Sep	45	5
Oct	21	5
Nov	12	5
Dec	28	4

Chicopee River

Status now

Events behind the colour

What the authorities advise

Map

Modeled downstream reaches on Chicopee River

Traced outfall paths

The last 90 days

Discharges over the years

Discharge events per month

Hours under advisory per month

Days with a discharge per month

Reported volume per year

Hours under advisory per year

Share of the May to October season under advisory

Discharge events by calendar month, all years

Discharge events by outfall

Reported monthly totals: EPA ECHO discharge monitoring reports (monthly CSO totals)

Discharge events reported

Hours of discharge reported

Every event on Chicopee River

Outfalls on this water

Launches

Sources covering this water

Month	Events	Years of records
Jan	25	4
Feb	3	4
Mar	37	4
Apr	20	4
May	30	4
Jun	49	5
Jul	93	5
Aug	24	5
Sep	45	5
Oct	21	5
Nov	12	5
Dec	28	4