Massachusetts / Waters /
Charles River
River in Massachusetts · near Auburndale, Boston, Brighton, Dedham, Dover
Status now
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 21:26: unresolved, no end reported · MASSACHUSETTS WATER RESOURCES AUTHORITY · tidal or estuary: movement not modeled · since Oct 26, 2026, 12:03 PM EDT
Source: MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 77759ea4-6d4f-4b98-8751-7969067b09c4, published Oct 12, 2026, 12:03 PM 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 · MASSACHUSETTS WATER RESOURCES AUTHORITY · MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE · Oct 11, 2026, 9:26 PM EDT to ended, time not reported · not reported · Unresolved: no end reported, until Nov 11, 2026, 11:03 AM EST
Source: MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 77759ea4-6d4f-4b98-8751-7969067b09c4, published Oct 12, 2026, 12:03 PM 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.”
Source: MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 77759ea4-6d4f-4b98-8751-7969067b09c4, published Oct 12, 2026, 12:03 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
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 on Charles River
No discharge colours a modeled reach on this water now.
The last 90 days
- Unresolved: no end reported: Oct 26, 2026, 1:00 PM EDT to now · set by event 1
- Caution: Oct 11, 2026, 9:00 PM EDT to Oct 26, 2026, 1:00 PM EDT · set by event 1
- Caution: Sep 29, 2026, 4:00 PM EDT to Sep 30, 2026, 4:00 PM EDT · set by event 1
- Advisory in effect: Sep 27, 2026, 8:00 AM EDT to Sep 29, 2026, 4:00 PM EDT · set by event 1
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 months10Dec 2025 to Nov 2026
- Days with a discharge, last 12 months7Dec 2025 to Nov 2026
- Hours under advisory, last 12 months277Dec 2025 to Nov 2026
- 2026 season under advisory5.2%May to October; 228 h
Discharge events per month
170 events, Jan 2022 to Nov 2026. Counted from 169 verified or annual reports, 1 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.
Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.
Show table
| Month | Combined sewer overflow | Sanitary sewer overflow | Bypass, blended or other | Total | Counted from | Coverage |
|---|---|---|---|---|---|---|
| Jan 2022 | 0 | 0 | 0 | 0 | No source | |
| Feb 2022 | 0 | 0 | 0 | 0 | No source | |
| Mar 2022 | 0 | 0 | 0 | 0 | No source | |
| Apr 2022 | 0 | 0 | 0 | 0 | No source | |
| May 2022 | 0 | 0 | 0 | 0 | Partly covered or sparse source | |
| Jun 2022 | 0 | 0 | 0 | 0 | Partly covered or sparse source | |
| Jul 2022 | 0 | 0 | 0 | 0 | ||
| Aug 2022 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Sep 2022 | 0 | 0 | 0 | 0 | ||
| Oct 2022 | 2 | 0 | 1 | 3 | Verified or annual reports | |
| Nov 2022 | 1 | 0 | 1 | 2 | Verified or annual reports | |
| Dec 2022 | 2 | 0 | 4 | 6 | Verified or annual reports | |
| Jan 2023 | 1 | 0 | 3 | 4 | Verified or annual reports | |
| Feb 2023 | 0 | 0 | 0 | 0 | ||
| Mar 2023 | 3 | 0 | 2 | 5 | Verified or annual reports | |
| Apr 2023 | 0 | 0 | 1 | 1 | Verified or annual reports | |
| May 2023 | 4 | 0 | 1 | 5 | Verified or annual reports | |
| Jun 2023 | 0 | 0 | 0 | 0 | ||
| Jul 2023 | 24 | 0 | 8 | 32 | Verified or annual reports | |
| Aug 2023 | 14 | 3 | 3 | 20 | Verified or annual reports | |
| Sep 2023 | 2 | 0 | 2 | 4 | Verified or annual reports | |
| Oct 2023 | 0 | 0 | 0 | 0 | ||
| Nov 2023 | 0 | 0 | 0 | 0 | ||
| Dec 2023 | 9 | 1 | 3 | 13 | Verified or annual reports | |
| Jan 2024 | 12 | 1 | 5 | 18 | Verified or annual reports | |
| Feb 2024 | 0 | 0 | 0 | 0 | ||
| Mar 2024 | 7 | 0 | 6 | 13 | Verified or annual reports | |
| Apr 2024 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| May 2024 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Jun 2024 | 7 | 0 | 0 | 7 | Verified or annual reports | |
| Jul 2024 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Aug 2024 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Sep 2024 | 0 | 0 | 0 | 0 | ||
| Oct 2024 | 0 | 0 | 0 | 0 | ||
| Nov 2024 | 0 | 0 | 0 | 0 | ||
| Dec 2024 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Jan 2025 | 0 | 0 | 0 | 0 | ||
| Feb 2025 | 0 | 0 | 0 | 0 | ||
| Mar 2025 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Apr 2025 | 0 | 0 | 0 | 0 | ||
| May 2025 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Jun 2025 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Jul 2025 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Aug 2025 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Sep 2025 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Oct 2025 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Nov 2025 | 0 | 0 | 0 | 0 | ||
| Dec 2025 | 0 | 0 | 0 | 0 | ||
| Jan 2026 | 0 | 0 | 0 | 0 | ||
| Feb 2026 | 0 | 0 | 0 | 0 | ||
| Mar 2026 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Apr 2026 | 0 | 0 | 0 | 0 | ||
| May 2026 | 0 | 0 | 0 | 0 | ||
| Jun 2026 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Jul 2026 | 6 | 0 | 0 | 6 | Verified or annual reports | |
| Aug 2026 | 0 | 0 | 0 | 0 | ||
| Sep 2026 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Oct 2026 | 1 | 0 | 0 | 1 | Public notices (no report yet) | |
| Nov 2026 | 0 | 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. 1 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
| 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 | 0 | 0 | 744 | |
| Aug 2022 | 49 | 49 | 744 | |
| Sep 2022 | 0 | 0 | 720 | |
| Oct 2022 | 60 | 60 | 744 | |
| Nov 2022 | 4 | 4 | 720 | |
| Dec 2022 | 164 | 164 | 744 | |
| Jan 2023 | 173 | 173 | 744 | |
| Feb 2023 | 0 | 0 | 672 | |
| Mar 2023 | 144 | 144 | 744 | |
| Apr 2023 | 1 | 1 | 720 | |
| May 2023 | 104 | 104 | 744 | |
| Jun 2023 | 0 | 0 | 720 | |
| Jul 2023 | 324 | 324 | 744 | |
| Aug 2023 | 163 | 163 | 744 | |
| Sep 2023 | 61 | 61 | 720 | |
| Oct 2023 | 0 | 0 | 744 | |
| Nov 2023 | 0 | 0 | 720 | |
| Dec 2023 | 147 | 147 | 744 | |
| Jan 2024 | 264 | 264 | 744 | |
| Feb 2024 | 0 | 0 | 696 | |
| Mar 2024 | 304 | 304 | 744 | |
| Apr 2024 | 56 | 56 | 720 | |
| May 2024 | 39 | 39 | 744 | |
| Jun 2024 | 66 | 66 | 720 | |
| Jul 2024 | 12 | 12 | 744 | |
| Aug 2024 | 86 | 86 | 744 | |
| Sep 2024 | 0 | 0 | 720 | |
| Oct 2024 | 0 | 0 | 744 | |
| Nov 2024 | 0 | 0 | 720 | |
| Dec 2024 | 57 | 57 | 744 | |
| Jan 2025 | 0 | 0 | 744 | |
| Feb 2025 | 0 | 0 | 672 | |
| Mar 2025 | 100 | 100 | 744 | |
| Apr 2025 | 0 | 0 | 720 | |
| May 2025 | 107 | 107 | 744 | |
| Jun 2025 | 50 | 50 | 720 | |
| Jul 2025 | 97 | 97 | 744 | |
| Aug 2025 | 49 | 49 | 744 | |
| Sep 2025 | 101 | 101 | 720 | |
| Oct 2025 | 151 | 151 | 744 | |
| Nov 2025 | 0 | 0 | 720 | |
| Dec 2025 | 0 | 0 | 744 | |
| Jan 2026 | 0 | 0 | 744 | |
| Feb 2026 | 0 | 0 | 672 | |
| Mar 2026 | 49 | 49 | 744 | |
| Apr 2026 | 0 | 0 | 720 | |
| May 2026 | 0 | 0 | 744 | |
| Jun 2026 | 48 | 48 | 720 | |
| Jul 2026 | 124 | 124 | 744 | |
| Aug 2026 | 0 | 0 | 744 | |
| Sep 2026 | 55 | 55 | 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
| 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 | 0 | |
| Aug 2022 | 1 | |
| Sep 2022 | 0 | |
| Oct 2022 | 1 | |
| Nov 2022 | 1 | |
| Dec 2022 | 2 | |
| Jan 2023 | 4 | |
| Feb 2023 | 0 | |
| Mar 2023 | 4 | |
| Apr 2023 | 1 | |
| May 2023 | 3 | |
| Jun 2023 | 0 | |
| Jul 2023 | 8 | |
| Aug 2023 | 3 | |
| Sep 2023 | 2 | |
| Oct 2023 | 0 | |
| Nov 2023 | 0 | |
| Dec 2023 | 3 | |
| Jan 2024 | 8 | |
| Feb 2024 | 0 | |
| Mar 2024 | 9 | |
| Apr 2024 | 1 | |
| May 2024 | 1 | |
| Jun 2024 | 2 | |
| Jul 2024 | 1 | |
| Aug 2024 | 1 | |
| Sep 2024 | 0 | |
| Oct 2024 | 0 | |
| Nov 2024 | 0 | |
| Dec 2024 | 2 | |
| Jan 2025 | 0 | |
| Feb 2025 | 0 | |
| Mar 2025 | 2 | |
| Apr 2025 | 0 | |
| May 2025 | 3 | |
| Jun 2025 | 1 | |
| Jul 2025 | 2 | |
| Aug 2025 | 1 | |
| Sep 2025 | 2 | |
| Oct 2025 | 3 | |
| Nov 2025 | 0 | |
| Dec 2025 | 0 | |
| Jan 2026 | 0 | |
| Feb 2026 | 0 | |
| Mar 2026 | 1 | |
| Apr 2026 | 0 | |
| May 2026 | 0 | |
| Jun 2026 | 1 | |
| Jul 2026 | 3 | |
| Aug 2026 | 0 | |
| Sep 2026 | 1 | |
| Oct 2026 | 1 | |
| Nov 2026 | 0 |
Reported volume per year
Gallons, summed from the 169 events that gave a number (1 did not).
- Partly covered or sparse source
1 of 170 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
| Year | Gallons | Events with a number | Events without | Coverage |
|---|---|---|---|---|
| 2022 | 108,840,000 | 13 | 0 | Partly covered or sparse source |
| 2023 | 1,755,154,752 | 84 | 0 | |
| 2024 | 1,605,519,157 | 46 | 0 | |
| 2025 | 138,660,000 | 17 | 0 | |
| 2026 | 63,520,000 | 9 | 1 |
Hours under advisory per year
Hours under advisory each year; 2026 to date.
- Advisory in effect
- Partly covered or sparse source
1 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
| Year | Hours under advisory | Share of the year | Coverage |
|---|---|---|---|
| 2022 | 276 | 3.1% | Partly covered or sparse source |
| 2023 | 1,116 | 12.7% | |
| 2024 | 885 | 10.1% | |
| 2025 | 655 | 7.5% | |
| 2026 | 277 | 3.8% |
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
| Month | Events | Years of records |
|---|---|---|
| Jan | 22 | 4 |
| Feb | 0 | 4 |
| Mar | 22 | 4 |
| Apr | 2 | 4 |
| May | 10 | 4 |
| Jun | 9 | 5 |
| Jul | 42 | 5 |
| Aug | 24 | 5 |
| Sep | 8 | 5 |
| Oct | 8 | 5 |
| Nov | 2 | 5 |
| Dec | 21 | 4 |
Discharge events by outfall
The 10 outfalls with the most events of 11, 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
| Outfall | Discharger | Events |
|---|---|---|
| MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | MASSACHUSETTS WATER RESOURCES AUTHORITY | 46 |
| T01 | MASSACHUSETTS WATER RESOURCES AUTHORITY | 40 |
| CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | CITY OF CAMBRIDGE | 31 |
| MWR201 125 FT WEST OF BU BRIDGE | MASSACHUSETTS WATER RESOURCES AUTHORITY | 14 |
| MWR023 STORROW DRIVE @MUDDY RIVER | MASSACHUSETTS WATER RESOURCES AUTHORITY | 9 |
| MWR020 715 SW OF HATCH MEMORIAL SHELL | MASSACHUSETTS WATER RESOURCES AUTHORITY | 5 |
| MWR019 NORTH OF STORROW DR BTW EXETER & DARTMOUTH | MASSACHUSETTS WATER RESOURCES AUTHORITY | 5 |
| MWR018 NORTH OF STORROW DR @ HEREFORD ST | MASSACHUSETTS WATER RESOURCES AUTHORITY | 5 |
| CAM017 NEAR ROWLAND INSTITUTE | CITY OF CAMBRIDGE | 5 |
| CAM007 INT OF HAWTHORNE & MEMORIAL DR | CITY OF CAMBRIDGE | 4 |
| Other outfalls (1) | 1 | |
| Outfall not stated | 5 |
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 Charles River
| Start | End | Discharger | Outfall | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|
| Oct 11, 2026, 9:26 PM EDT | ended, time not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 77759ea4-6d4f-4b98-8751-7969067b09c4, published Oct 12, 2026, 12:03 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | Event: Combined sewer overflow, MASSACHUSETTS WATER RESOURCES AUTHORITY, Oct 11, 2026, 9:26 PM EDT · Map |
| Sep 27, 2026, 8:34 AM EDT | Sep 27, 2026, 3:44 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 28.89 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6ab65d5c-a34d-4d05-9e6f-dc79368c6dcb, published Oct 8, 2026, 4:01 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | Event: Combined sewer overflow, MASSACHUSETTS WATER RESOURCES AUTHORITY, Sep 27, 2026, 8:34 AM EDT · Map |
| Sep 27, 2026, 8:31 AM EDT | Sep 27, 2026, 3:44 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 364208db-effe-45dc-82c5-18ae369beb17, published Sep 27, 2026, 9:20 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, MASSACHUSETTS WATER RESOURCES AUTHORITY, Sep 27, 2026, 8:31 AM EDT · Map |
| Jul 22, 2026, 5:02 PM EDT | Jul 22, 2026, 7:03 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 8.23 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b29927e0-299e-46a0-9241-af33f28a3b33, published Aug 5, 2026, 2:05 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, MASSACHUSETTS WATER RESOURCES AUTHORITY, Jul 22, 2026, 5:02 PM EDT · Map |
| Jul 22, 2026, 5:00 PM EDT | Jul 22, 2026, 7:03 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record afd1df1f-108f-4e07-aaef-c39f6fe60205, published Jul 22, 2026, 7:25 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, MASSACHUSETTS WATER RESOURCES AUTHORITY, Jul 22, 2026, 5:00 PM EDT · Map |
| Jul 22, 2026, 4:39 PM EDT | Jul 22, 2026, 4:45 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f4af0303-3be4-46cf-8448-7f22df019947, published Jul 23, 2026, 9:35 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 22, 2026, 4:39 PM EDT · Map |
| Jul 22, 2026, 4:30 PM EDT | Jul 22, 2026, 4:45 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 140,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d4323897-9b47-489d-944a-867510db0c19, published Aug 14, 2026, 3:07 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 22, 2026, 4:30 PM EDT · Map |
| Jul 21, 2026, 7:22 PM EDT | Jul 21, 2026, 10:34 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 12.29 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 8d8cee27-ebe7-48cc-b79a-71ee799edff4, published Aug 5, 2026, 2:02 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, MASSACHUSETTS WATER RESOURCES AUTHORITY, Jul 21, 2026, 7:22 PM EDT · Map |
| Jul 21, 2026, 7:20 PM EDT | Jul 21, 2026, 10:34 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 430a9ba3-9fc4-40b2-88b0-7111f7d8b77f, published Jul 22, 2026, 6:25 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, MASSACHUSETTS WATER RESOURCES AUTHORITY, Jul 21, 2026, 7:20 PM EDT · Map |
| Jul 21, 2026, 6:00 PM EDT | Jul 21, 2026, 6:30 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6a1ae207-6861-4856-87b9-25a1bd1ca60d, published Aug 14, 2026, 3:03 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 21, 2026, 6:00 PM EDT · Map |
| Jul 21, 2026, 6:00 PM EDT | Jul 21, 2026, 6:30 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 12af0051-f5a9-4c7c-a3d0-089fe5306c9c, published Jul 23, 2026, 9:32 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 21, 2026, 6:00 PM EDT · Map |
| Jul 7, 2026, 7:12 PM EDT | Jul 7, 2026, 9:39 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 10.71 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 27f83e10-ae46-4d5c-a608-562a642c85e9, published Aug 5, 2026, 1:52 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, MASSACHUSETTS WATER RESOURCES AUTHORITY, Jul 7, 2026, 7:12 PM EDT · Map |
| Jul 7, 2026, 7:12 PM EDT | Jul 7, 2026, 9:39 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 504a5dc2-6215-4e68-a045-8e6ffedb3ad5, published Jul 8, 2026, 10:01 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, MASSACHUSETTS WATER RESOURCES AUTHORITY, Jul 7, 2026, 7:12 PM EDT · Map |
| Jul 7, 2026, 6:15 PM EDT | Jul 7, 2026, 6:30 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a139ff63-76e8-4585-ad5a-5a29cb2eb3dd, published Aug 14, 2026, 2:49 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 7, 2026, 6:15 PM EDT · Map |
| Jul 7, 2026, 6:10 PM EDT | Jul 7, 2026, 6:30 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3b6a0b96-98c0-4439-8e4a-434ade2c5ff2, published Jul 8, 2026, 8:26 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 7, 2026, 6:10 PM EDT · Map |
| Jun 18, 2026, 6:50 PM EDT | Jun 18, 2026, 7:00 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a1097523-a823-4686-bb1a-3aae2dd0372b, published Jun 18, 2026, 7:57 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jun 18, 2026, 6:50 PM EDT · Map |
| Jun 18, 2026, 6:45 PM EDT | Jun 18, 2026, 7:00 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4cf8294c-5957-4822-8700-48f61be6669b, published Jul 15, 2026, 2:07 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jun 18, 2026, 6:45 PM EDT · Map |
| Mar 16, 2026, 9:48 AM EDT | Mar 16, 2026, 10:53 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 3.23 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record dbaa184b-e88c-42f3-b748-7fbe4773676c, published Apr 8, 2026, 10:31 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) | |||||||
| Mar 16, 2026, 9:45 AM EDT | Mar 16, 2026, 10:53 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1213018a-d146-417b-9003-6180e57c94ab, published Mar 16, 2026, 8:55 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) | |||||||
| Oct 20, 2025, 11:17 AM EDT | Oct 20, 2025, 11:17 AM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 0 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c5176dc0-79c5-4be3-a641-b882b5269b5d, published Nov 18, 2025, 9:10 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 20, 2025, 11:17 AM EDT | Oct 20, 2025, 11:17 AM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c5255d9b-f2dc-4bd6-8cf0-54cf304ed7a5, published Oct 20, 2025, 4:20 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) | |||||||
| Oct 13, 2025, 3:09 PM EDT | Oct 13, 2025, 6:43 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 12.84 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1ca77fa8-6278-46df-8b9d-42df2468918c, published Nov 12, 2025, 9:16 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 13, 2025, 3:07 PM EDT | Oct 13, 2025, 6:43 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 29f793f2-6efc-4f15-afd3-b4ac360eee42, published Oct 14, 2025, 8:15 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) | |||||||
| Oct 8, 2025, 10:20 AM EDT | Oct 8, 2025, 1:03 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 9.8 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f94ad48a-5fa4-46f0-a39f-890445d0007d, published Nov 12, 2025, 8:46 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2025, 10:16 AM EDT | Oct 8, 2025, 1:03 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 28103bfc-c4b0-4434-94fd-a2785abc996a, published Oct 8, 2025, 3:56 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) | |||||||
| Oct 8, 2025, 9:15 AM EDT | Oct 8, 2025, 9:30 AM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 50,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 72f88ffd-b26f-41de-96b3-3c8a3c48b5ec, published Nov 14, 2025, 12:36 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2025, 9:00 AM EDT | Oct 8, 2025, 9:30 AM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b490290d-6ef5-4f0d-9d88-7b5ef0fda1d8, published Oct 8, 2025, 5:06 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) | |||||||
| Sep 25, 2025, 10:31 AM EDT | Sep 25, 2025, 12:53 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ca499395-58f1-48b1-9bc0-26a534614919, published Sep 26, 2025, 7:56 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) | |||||||
| Sep 25, 2025, 10:30 AM EDT | Sep 25, 2025, 12:53 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 9.22 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 00c983f3-28c0-4f75-8738-cc502bef2776, published Oct 20, 2025, 4:52 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) | |||||||
| Sep 6, 2025, 7:21 PM EDT | Sep 6, 2025, 9:07 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 6.16 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 108b1d8e-3a9f-4f91-a42e-ee27c135d6b6, published Oct 20, 2025, 4:44 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) | |||||||
| Sep 6, 2025, 7:19 PM EDT | Sep 6, 2025, 9:07 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7e1626fd-d903-4e67-ab82-4f24ef3ddc79, published Sep 7, 2025, 11:20 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) | |||||||
| Sep 6, 2025, 6:20 PM EDT | Sep 6, 2025, 6:45 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 23812d25-338c-4284-9e4e-3befe8f063d4, published Sep 9, 2025, 11:15 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) | |||||||
| Sep 6, 2025, 6:15 PM EDT | Sep 6, 2025, 6:45 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 90,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 261a8f5c-2f26-4b5e-a253-4fd1ef5258e4, published Oct 14, 2025, 3:51 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) | |||||||
| Aug 14, 2025, 6:50 PM EDT | Aug 14, 2025, 7:15 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3612819f-f04e-44ae-9dea-e05ede260d13, published Aug 15, 2025, 8:56 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) | |||||||
| Aug 14, 2025, 6:45 PM EDT | Aug 14, 2025, 7:15 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 1.22 million gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0c9eb75c-0d96-4372-a808-474956a00528, published Sep 15, 2025, 9:10 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) | |||||||
| Jul 25, 2025, 3:05 PM EDT | Jul 25, 2025, 3:15 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 84497e7a-934d-4344-96fb-3983cb8199e8, published Jul 28, 2025, 10:34 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) | |||||||
| Jul 25, 2025, 3:00 PM EDT | Jul 25, 2025, 3:15 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 70,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b0cbb9ea-e969-4039-abfa-801153eeff2f, published Aug 14, 2025, 9:51 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) | |||||||
| Jul 20, 2025, 7:59 PM EDT | Jul 20, 2025, 8:15 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 263634e4-42a3-40c2-ab7b-bad1e3d7a0fd, published Jul 21, 2025, 11:07 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) | |||||||
| Jul 20, 2025, 7:45 PM EDT | Jul 20, 2025, 8:15 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 170,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f4ce4ada-a4a2-42da-8856-16d2ceab20e8, published Aug 14, 2025, 9:46 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) | |||||||
| Jun 8, 2025, 5:52 PM EDT | ended, time not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4acaaac0-ab00-4f79-a961-9c8f91dd0d43, published Jun 7, 2025, 8:48 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) | |||||||
| Jun 7, 2025, 5:54 PM EDT | Jun 7, 2025, 8:08 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 8.73 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0aed1acc-8ed2-4f13-9044-5028331a1d20, published Jul 7, 2025, 11:38 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) | |||||||
| May 22, 2025, 8:43 PM EDT | May 23, 2025, 3:02 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR201 125 FT WEST OF BU BRIDGE | Combined sewer overflow | 15.02 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 5cf3d5aa-90d5-4da1-b457-676868b8ff0f, published Jun 9, 2025, 2:21 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) | |||||||
| May 22, 2025, 8:43 PM EDT | May 23, 2025, 3:02 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR201 125 FT WEST OF BU BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 02c20701-3b74-429d-94f4-28ebd6298146, published May 23, 2025, 10:16 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) | |||||||
| May 22, 2025, 7:05 PM EDT | May 23, 2025, 3:30 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 57.78 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d7a56c42-e58f-430b-bc93-95121c517a2b, published Jun 9, 2025, 2:19 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) | |||||||
| May 22, 2025, 7:03 PM EDT | May 23, 2025, 3:30 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ff5eca40-858d-46db-a882-a9e32983b48b, published May 23, 2025, 10:15 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) | |||||||
| May 10, 2025, 7:03 PM EDT | ended, time not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 71e2beba-b206-4338-bc32-95ebc70a6c34, published May 10, 2025, 2:40 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) | |||||||
| May 9, 2025, 7:10 PM EDT | May 9, 2025, 9:23 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 5.44 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b6457de6-cdbb-4066-8eb6-7c228fc1fe59, published Jun 9, 2025, 2:12 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) | |||||||
| Mar 17, 2025, 5:05 AM EDT | Mar 17, 2025, 6:58 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 7.88 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7ccec871-c85b-47f0-a30b-20d0358519ea, published Apr 8, 2025, 9:49 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) | |||||||
| Mar 17, 2025, 5:03 AM EDT | Mar 17, 2025, 6:58 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 701e2fe2-abc2-4de0-8ab1-c93a961d8a97, published Mar 17, 2025, 4:36 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) | |||||||
| Mar 17, 2025, 4:30 AM EDT | Mar 17, 2025, 4:45 AM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f4531ed4-1264-4a36-bf23-28aa0b69c82f, published Apr 14, 2025, 3:13 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) | |||||||
| Mar 17, 2025, 4:13 AM EDT | Mar 17, 2025, 4:45 AM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d1d2d874-c3fd-4045-a391-49970f67e80d, published Mar 17, 2025, 12:43 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) | |||||||
| Mar 6, 2025, 5:23 AM EST | Mar 6, 2025, 7:16 AM EST | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 4.18 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f4a2f8ee-2156-43ce-afc8-d03c6eea8980, published Apr 8, 2025, 9:45 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) | |||||||
| Mar 6, 2025, 5:21 AM EST | Mar 6, 2025, 7:16 AM EST | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4505c8bc-28d8-4c57-9b7a-07501f5e539a, published Mar 6, 2025, 9:45 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 11, 2024, 8:05 PM EST | Dec 11, 2024, 10:17 PM EST | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR201 125 FT WEST OF BU BRIDGE | Combined sewer overflow | 3.75 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7f8e1cc8-e66b-4136-a4c6-70c7cc90e759, published Jan 14, 2025, 11:03 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 11, 2024, 8:05 PM EST | Dec 11, 2024, 10:17 PM EST | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR201 125 FT WEST OF BU BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 9c2b2746-eb14-4ba2-80f8-e00e10fa170b, published Dec 12, 2024, 6:56 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 11, 2024, 3:49 PM EST | Dec 12, 2024, 12:45 AM EST | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 44.63 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record fec5cc11-d481-4c66-8198-37995c3b96fe, published Jan 14, 2025, 11:00 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 11, 2024, 3:47 PM EST | Dec 12, 2024, 12:45 AM EST | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ce40453d-221e-4f91-a2df-bb97be787bda, published Dec 12, 2024, 6:53 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 4, 2024, 5:56 PM EDT | Aug 4, 2024, 7:08 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 3.48 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b6a55927-089f-42a6-bb4b-b34a48acf9e9, published Sep 13, 2024, 10:04 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) | |||||||
| Aug 4, 2024, 5:56 PM EDT | Aug 4, 2024, 7:08 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ded9b940-82c4-4720-bc8f-b181c93d8e05, published Aug 4, 2024, 7:55 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) | |||||||
| Jul 31, 2024, 12:15 PM EDT | Jul 31, 2024, 12:30 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 30,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4f6602b0-20bf-4c80-bd79-f41991551410, published Jan 30, 2025, 5:29 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 31, 2024, 11:53 AM EDT | Jul 31, 2024, 12:30 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 40251177-6cbb-4388-8fb5-61bdd8e39829, published Jul 31, 2024, 2:58 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) | |||||||
| Jul 31, 2024, 11:45 AM EDT | Jul 31, 2024, 12:15 PM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 01b56f97-7aca-4c99-a0d0-b03dfdd3f9c4, published Aug 14, 2024, 11:44 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) | |||||||
| Jun 27, 2024, 12:30 AM EDT | Jun 27, 2024, 12:45 AM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c7be727c-3912-4067-b539-a9b49231cd36, published Jan 30, 2025, 5:19 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jun 27, 2024, 12:30 AM EDT | Jun 27, 2024, 2:00 AM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 20,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4f022dff-dbd1-4d81-952b-3041807cc3cb, published Jul 11, 2024, 3:00 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) | |||||||
| Jun 27, 2024, 12:22 AM EDT | Jun 27, 2024, 2:00 AM EDT | CITY OF CAMBRIDGE | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d81721ba-acc3-43ca-b8a7-9a4bda097409, published Jun 27, 2024, 2:46 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) | |||||||
| Jun 26, 2024, 9:46 PM EDT | Jun 27, 2024, 2:11 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 18.53 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 88b84f15-916a-45ca-b103-f904313b55eb, published Jul 12, 2024, 10:09 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) | |||||||
| Jun 26, 2024, 9:46 PM EDT | Jun 27, 2024, 2:11 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record fc3c7fbc-c9f3-4d92-bdad-35796aa042f7, published Jun 27, 2024, 8:01 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) | |||||||
| Jun 26, 2024, 9:29 PM EDT | Jun 26, 2024, 9:45 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR020 715 SW OF HATCH MEMORIAL SHELL | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6bbd7323-b18f-4f9c-a542-0cac23fc9cba, published Jun 27, 2024, 8:03 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) | |||||||
| Jun 26, 2024, 9:25 PM EDT | Jun 26, 2024, 9:45 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR019 NORTH OF STORROW DR BTW EXETER & DARTMOUTH | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 15019269-4504-47ef-8922-07fe6234343b, published Jun 27, 2024, 8:03 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) | |||||||
| Jun 26, 2024, 9:15 PM EDT | Jun 26, 2024, 9:45 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR020 715 SW OF HATCH MEMORIAL SHELL | Combined sewer overflow | 51,000 gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6d84bf73-c56f-44e9-8630-14e1a98ed3b9, published Jul 12, 2024, 10:13 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) | |||||||
| Jun 26, 2024, 9:15 PM EDT | Jun 26, 2024, 9:45 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR019 NORTH OF STORROW DR BTW EXETER & DARTMOUTH | Combined sewer overflow | 42,000 gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 35763f6f-30f2-4956-8201-9bc31f2c4bcd, published Jul 12, 2024, 10:12 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) | |||||||
| Jun 26, 2024, 9:15 PM EDT | Jun 26, 2024, 10:00 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR018 NORTH OF STORROW DR @ HEREFORD ST | Combined sewer overflow | 143,000 gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b4724045-7642-4f5e-9f30-a62359385a47, published Jul 12, 2024, 10:11 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) | |||||||
| Jun 26, 2024, 9:15 PM EDT | Jun 26, 2024, 10:00 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR018 NORTH OF STORROW DR @ HEREFORD ST | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f4493f99-e8fb-4a72-aed5-258194a5c0ac, published Jun 27, 2024, 8:02 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) | |||||||
| Jun 26, 2024, 8:59 PM EDT | Jun 26, 2024, 9:57 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR023 STORROW DRIVE @MUDDY RIVER | Combined sewer overflow | 119,000 gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a32d6843-200d-465b-b5d0-15661fa219ad, published Jul 12, 2024, 10:15 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) | |||||||
| Jun 26, 2024, 8:58 PM EDT | Jun 26, 2024, 9:57 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR023 STORROW DRIVE @MUDDY RIVER | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7fb94c9c-79b9-45a2-a069-6d6d0da697ba, published Jun 27, 2024, 8:04 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) | |||||||
| May 30, 2024, 10:13 AM EDT | May 30, 2024, 12:18 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR201 125 FT WEST OF BU BRIDGE | Combined sewer overflow | 8.08 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record deecc461-d4bf-430c-8a54-c2afac4cfc1c, published Jun 13, 2024, 1:41 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) | |||||||
| May 30, 2024, 10:13 AM EDT | May 30, 2024, 12:18 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR201 125 FT WEST OF BU BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7a303ced-238f-473a-ab68-c2bd170b25f9, published May 30, 2024, 3:17 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) | |||||||
| May 30, 2024, 9:16 AM EDT | May 30, 2024, 12:51 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 20.72 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c5b75da0-f623-4d67-acd2-90a341fbc8b6, published Jun 13, 2024, 1:40 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) | |||||||
| May 30, 2024, 9:16 AM EDT | May 30, 2024, 12:51 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b57af321-0434-40cf-ba4c-b1c913f22110, published May 30, 2024, 3:14 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) | |||||||
| Apr 4, 2024, 2:24 AM EDT | Apr 4, 2024, 7:36 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2a8600bb-312e-41da-9e86-27bebcd77e16, published Apr 4, 2024, 6:02 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) | |||||||
| Apr 4, 2024, 2:20 AM EDT | Apr 4, 2024, 7:36 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 14.23 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 77908a4c-d4ac-4111-a83d-eb80ff865be7, published May 10, 2024, 2:53 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) | |||||||
| Mar 28, 2024, 4:36 PM EDT | Mar 30, 2024, 2:53 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) discharge | 227.06 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2a79b7ef-9ac9-41a2-9c50-6cabeba675a2, published Apr 10, 2024, 1:42 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) | |||||||
| Mar 28, 2024, 4:36 PM EDT | Mar 30, 2024, 2:53 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) discharge | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c3787e9b-a74a-494b-8e43-70f1aa53369f, published Mar 30, 2024, 7:17 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) | |||||||
| Mar 28, 2024, 4:36 PM EDT | Mar 30, 2024, 2:53 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) dischargerevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3c544789-9731-4eeb-80d4-a5e231378bb5, published Mar 29, 2024, 9:49 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) | |||||||
| Mar 23, 2024, 8:38 PM EDT | Mar 23, 2024, 10:31 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR201 125 FT WEST OF BU BRIDGE | Combined sewer overflow | 6.29 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6daedede-7c76-4248-a603-c4c99914ee48, published Apr 10, 2024, 1:39 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) | |||||||
| Mar 23, 2024, 8:30 PM EDT | Mar 23, 2024, 10:31 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR201 125 FT WEST OF BU BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 432d6d52-2c7c-4c30-ae18-df74f000e815, published Mar 24, 2024, 8:52 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) | |||||||
| Mar 23, 2024, 6:21 PM EDT | Mar 23, 2024, 11:48 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 31.69 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 307b945b-09eb-47e5-aa3a-bf8530c0b341, published Apr 10, 2024, 1:38 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) | |||||||
| Mar 23, 2024, 6:17 PM EDT | Mar 23, 2024, 11:48 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d4ef8c9e-9b18-472c-93d8-0cb4eda8b8c2, published Mar 24, 2024, 8:50 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) | |||||||
| Mar 23, 2024, 5:40 PM EDT | Mar 24, 2024, 4:05 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) discharge | 120.32 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1c17cf28-6701-48cc-a2de-e420bedb88c9, published Apr 10, 2024, 1:27 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) | |||||||
| Mar 23, 2024, 5:40 PM EDT | Mar 24, 2024, 4:05 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) dischargerevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a894bf67-9d10-43b0-a31b-405e31e2397a, published Mar 24, 2024, 8:45 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) | |||||||
| Mar 10, 2024, 12:47 PM EDT | Mar 10, 2024, 3:20 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) discharge | 710,000 gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d07e3fd6-af90-42f0-ae8d-1da1444d9662, published Apr 10, 2024, 1:26 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) | |||||||
| Mar 10, 2024, 12:47 PM EDT | Mar 10, 2024, 3:20 PM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) dischargerevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record fb9512cd-3279-4292-ae1c-b36508618465, published Mar 10, 2024, 3:55 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) | |||||||
| Mar 10, 2024, 4:19 AM EDT | Mar 10, 2024, 6:32 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 8.59 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 951a279e-2de7-4049-a80f-14bad789dd5b, published Apr 10, 2024, 1:25 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) | |||||||
| Mar 10, 2024, 4:15 AM EDT | Mar 10, 2024, 6:32 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1450526f-c866-47ef-bdd8-4cff34d7db66, published Mar 10, 2024, 9:47 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) | |||||||
| Mar 10, 2024, 1:25 AM EST | Mar 10, 2024, 8:26 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) discharge | 44.91 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4245aa94-bcca-478d-8c6b-0fe71bbf6ca6, published Apr 10, 2024, 1:23 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) | |||||||
| Mar 10, 2024, 1:25 AM EST | Mar 10, 2024, 8:26 AM EDT | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) dischargerevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2250f662-9d7a-4fab-8051-37f747905254, published Mar 10, 2024, 9:44 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) | |||||||
| Mar 7, 2024, 1:44 AM EST | Mar 7, 2024, 4:35 AM EST | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflow | 15.84 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3a8c240f-f7fb-4020-9c28-d8df678cd610, published Apr 10, 2024, 1:22 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) | |||||||
| Mar 7, 2024, 1:42 AM EST | Mar 7, 2024, 4:35 AM EST | MASSACHUSETTS WATER RESOURCES AUTHORITY | MWR203 JUST NORTH OF LOCKS AT CHARLSTOWN BRIDGE | Combined sewer overflowrevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 29c7bf05-91bd-46cb-b1e4-10a431d9471a, published Mar 7, 2024, 11:01 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 7, 2024, 12:53 AM EST | Mar 7, 2024, 6:06 AM EST | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) discharge | 42.05 million gal | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6dd37d38-2678-4df5-bc1a-0e857e1cadc5, published Apr 10, 2024, 1:20 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) | |||||||
| Mar 7, 2024, 12:53 AM EST | Mar 7, 2024, 6:06 AM EST | MASSACHUSETTS WATER RESOURCES AUTHORITY | T01 | Blended (partially treated) dischargerevised | not reported | MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a945c2d0-3540-42ef-8a73-988c6119b95c, published Mar 7, 2024, 10:57 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
Showing the newest 100 events of 334 events. See them all with filters.
Outfalls on this water
No outfall in the registry is matched to this water.
Dischargers: City of Cambridge DPW, Massachusetts Water Resources Authority.
Launches
- Charles River Elm Bank
- Charles River Boat Launch
- Charles River Boat Launch Brighton
- Charles River Boat Launch Sherborn
- Charles River Carry in Access
- Charles River Carry in Access Boston
- Charles River Carry in Access Dedham
- Charles River Carry in Access Medway
- Charles River Carry in Access Millis
- Charles River Carry in Access near Medfield
- Charles River Carry in Access near Medfield
- Charles River Carry in Access near Natick
- Charles River Carry in Access near Needham
- Charles River Carry in Access near Norfolk
- Charles River Carry in Access near Weston
- Charles River Carry in Access near Weston
- Nahanton Park Newton
Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, ODbL). · Charles 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
334 events placed on this water in this build.