Connecticut / Waters /
Quinnipiac River
River in Connecticut · near Hamden, Milldale, New Haven, North Haven
Status now
Advisory in effect
A sewage discharge on this water is reported as ongoing, or it ended less than the authority's advice window ago (48 hours in most New England wording), or an official advisory or closure is in effect. The authorities' advice is to avoid contact with the water.
Why this colour: Advisory in effect: no end reported. Rationale: An ongoing notice stays red until the source reports an end or 7 days pass. (source: data/rules.json) How long a water stays coloured, and why
Sewer overflow ongoing · PLAINVILLE WPCF · on a modeled downstream reach · since Oct 30, 2026, 1:00 PM EDT
Source: PLAINVILLE WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11641, the source gives no report time, retrieved 2026-11-02 11:53 UTC · notice
As of Nov 2, 2026, 6:56 AM EST.
Events behind the colour
- Advisory in effect Sanitary sewer overflow · PLAINVILLE WPCF · Sewer Main, 4 Carol Dr, Plainville, CT · Oct 30, 2026, 1:00 PM EDT to ongoing (as reported) · “Ongoing - TBD” · Discharge ongoing (no end reported yet), until Nov 6, 2026, 12:00 PM EST
Source: PLAINVILLE WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11641, the source gives no report time, retrieved 2026-11-02 11:53 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 are dashed.
Modeled downstream reaches on Quinnipiac 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.
- Advisory in effect 0 to 1.1 km below the outfall
0 to 1.1 km below the outfall · from PLAINVILLE WPCF
If sewage entered the river at outfall None at Oct 30 13:00, water from that point would typically reach here in about 1 hour (it could be as soon as under an hour) at the river's average flow (NHDPlus mean annual; no current gauge reading). 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.
- Advisory in effect 1.1 to 1.7 km below the outfall
1.1 to 1.7 km below the outfall · from PLAINVILLE WPCF
If sewage entered the river at outfall None at Oct 30 13:00, water from that point would typically reach here in about 2 hours (it could be as soon as under an hour) at the river's average flow (NHDPlus mean annual; no current gauge reading). 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.
- Advisory in effect 1.7 to 2 km below the outfall
1.7 to 2 km below the outfall · from PLAINVILLE WPCF
If sewage entered the river at outfall None at Oct 30 13:00, water from that point would typically reach here in about 2 hours (it could be as soon as about 1 hour) at the river's average flow (NHDPlus mean annual; no current gauge reading). 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.
- Advisory in effect 2 to 10.1 km below the outfall
2 to 10.1 km below the outfall · from PLAINVILLE WPCF
If sewage entered the river at outfall None at Oct 30 13:00, water from that point would typically reach here in about 10 hours (it could be as soon as about 6 hours) at the river's average flow (NHDPlus mean annual; no current gauge reading). 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.
- Advisory in effect 10.1 to 14.1 km below the outfall
10.1 to 14.1 km below the outfall · from PLAINVILLE WPCF
If sewage entered the river at outfall None at Oct 30 13:00, water from that point would typically reach here in about 14 hours (it could be as soon as about 8 hours) at the river's average flow (NHDPlus mean annual; no current gauge reading). 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.
- Advisory in effect 14.1 to 15.4 km below the outfall
14.1 to 15.4 km below the outfall · from PLAINVILLE WPCF
If sewage entered the river at outfall None at Oct 30 13:00, water from that point would typically reach here in about 15 hours (it could be as soon as about 8 hours) at the river's average flow (NHDPlus mean annual; no current gauge reading). 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.
- Advisory in effect 15.4 to 18.3 km below the outfall
15.4 to 18.3 km below the outfall · from PLAINVILLE WPCF
If sewage entered the river at outfall None at Oct 30 13:00, water from that point would typically reach here in about 17 hours (it could be as soon as about 10 hours) at the river's average flow (NHDPlus mean annual; no current gauge reading). 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.
- Advisory in effect 18.3 to 21.4 km below the outfall
18.3 to 21.4 km below the outfall · from PLAINVILLE WPCF
If sewage entered the river at outfall None at Oct 30 13:00, water from that point would typically reach here in about 20 hours (it could be as soon as about 11 hours) at the river's average flow (NHDPlus mean annual; no current gauge reading). 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.
- Advisory in effect 21.4 to 23.7 km below the outfall
21.4 to 23.7 km below the outfall · from PLAINVILLE WPCF
If sewage entered the river at outfall None at Oct 30 13:00, water from that point would typically reach here in about 22 hours (it could be as soon as about 12 hours) at the river's average flow (NHDPlus mean annual; no current gauge reading). 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: lake or bay below this point. Below this point water moves back and forth with the tide and wind, so we do not model where the discharge goes. See the official notice and local beach or shellfish advisories.
Traced outfall paths
- Advisory in effect CT0100455 · 23.686 km traced · Model stops here: lake or bay below this point
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
- Advisory in effect: Oct 30, 2026, 1:00 PM EDT to now · 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 months3Dec 2025 to Nov 2026
- Days with a discharge, last 12 months3Dec 2025 to Nov 2026
- Hours under advisory, last 12 months120Dec 2025 to Nov 2026
- 2026 season under advisory0.8%May to October; 35 h
Discharge events per month
215 events, Jan 2022 to Nov 2026. Counted from 200 verified or annual reports, 15 public notices.
- Combined sewer overflow
- Sanitary sewer overflow
- Bypass, blended or other
CT DEEP dashboard records begin 2021-12-02; where CT DEEP's annual report covers a discharger's month, the annual report is counted instead. CT DEEP annual reports (Sewage Right-to-Know) cover 2021-01-01 to 2026-11-02.
Sources: CT DEEP CSO/SSO dashboard; CT DEEP Sewage Right-to-Know annual reports. Covered 2022-01-01 to 2026-11-02.
Show table
| Month | Combined sewer overflow | Sanitary sewer overflow | Bypass, blended or other | Total | Counted from | Coverage |
|---|---|---|---|---|---|---|
| Jan 2022 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Feb 2022 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Mar 2022 | 3 | 1 | 0 | 4 | Verified or annual reports | |
| Apr 2022 | 7 | 1 | 0 | 8 | Verified or annual reports | |
| May 2022 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Jun 2022 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Jul 2022 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Aug 2022 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Sep 2022 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Oct 2022 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Nov 2022 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Dec 2022 | 8 | 0 | 0 | 8 | Verified or annual reports | |
| Jan 2023 | 10 | 0 | 0 | 10 | Verified or annual reports | |
| Feb 2023 | 0 | 0 | 0 | 0 | ||
| Mar 2023 | 6 | 0 | 0 | 6 | Verified or annual reports | |
| Apr 2023 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| May 2023 | 4 | 0 | 1 | 5 | Verified or annual reports | |
| Jun 2023 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Jul 2023 | 9 | 1 | 0 | 10 | Verified or annual reports | |
| Aug 2023 | 6 | 0 | 0 | 6 | Verified or annual reports | |
| Sep 2023 | 7 | 0 | 2 | 9 | Verified or annual reports | |
| Oct 2023 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Nov 2023 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Dec 2023 | 7 | 2 | 1 | 10 | Verified or annual reports | |
| Jan 2024 | 7 | 1 | 2 | 10 | Verified or annual reports | |
| Feb 2024 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Mar 2024 | 12 | 0 | 0 | 12 | Verified or annual reports | |
| Apr 2024 | 7 | 0 | 0 | 7 | Verified or annual reports | |
| May 2024 | 9 | 0 | 0 | 9 | Verified or annual reports | |
| Jun 2024 | 6 | 0 | 0 | 6 | Verified or annual reports | |
| Jul 2024 | 8 | 0 | 0 | 8 | Verified or annual reports | |
| Aug 2024 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Sep 2024 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Oct 2024 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Nov 2024 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Dec 2024 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Jan 2025 | 0 | 0 | 0 | 0 | ||
| Feb 2025 | 0 | 0 | 0 | 0 | ||
| Mar 2025 | 0 | 0 | 0 | 0 | ||
| Apr 2025 | 4 | 1 | 0 | 5 | Public notices (no report yet) | |
| May 2025 | 6 | 0 | 0 | 6 | Public notices (no report yet) | |
| Jun 2025 | 0 | 0 | 0 | 0 | ||
| Jul 2025 | 0 | 0 | 0 | 0 | ||
| Aug 2025 | 0 | 0 | 0 | 0 | ||
| Sep 2025 | 0 | 1 | 0 | 1 | Public notices (no report yet) | |
| Oct 2025 | 0 | 0 | 0 | 0 | ||
| 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 | 0 | 2 | 0 | 2 | Public notices (no report yet) | |
| Apr 2026 | 0 | 0 | 0 | 0 | ||
| May 2026 | 0 | 0 | 0 | 0 | ||
| Jun 2026 | 0 | 0 | 0 | 0 | ||
| Jul 2026 | 0 | 0 | 0 | 0 | ||
| Aug 2026 | 0 | 0 | 0 | 0 | ||
| Sep 2026 | 0 | 0 | 0 | 0 | ||
| Oct 2026 | 0 | 1 | 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
109 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. CT DEEP dashboard records begin 2021-12-02; where CT DEEP's annual report covers a discharger's month, the annual report is counted instead. CT DEEP annual reports (Sewage Right-to-Know) cover 2021-01-01 to 2026-11-02. CT DEEP's reporting archive runs 2016-07-04 to 2021-12-02.
Sources: CT DEEP CSO/SSO dashboard; CT DEEP Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.
Show table
| Month | Hours under advisory | From discharge windows | Hours in month | Coverage |
|---|---|---|---|---|
| Jan 2022 | 100 | 100 | 744 | |
| Feb 2022 | 206 | 206 | 672 | |
| Mar 2022 | 163 | 163 | 744 | |
| Apr 2022 | 233 | 233 | 720 | |
| May 2022 | 150 | 150 | 744 | |
| Jun 2022 | 177 | 177 | 720 | |
| Jul 2022 | 63 | 63 | 744 | |
| Aug 2022 | 150 | 150 | 744 | |
| Sep 2022 | 202 | 202 | 720 | |
| Oct 2022 | 205 | 205 | 744 | |
| Nov 2022 | 157 | 157 | 720 | |
| Dec 2022 | 269 | 269 | 744 | |
| Jan 2023 | 341 | 341 | 744 | |
| Feb 2023 | 0 | 0 | 672 | |
| Mar 2023 | 230 | 230 | 744 | |
| Apr 2023 | 141 | 141 | 720 | |
| May 2023 | 185 | 185 | 744 | |
| Jun 2023 | 145 | 145 | 720 | |
| Jul 2023 | 438 | 438 | 744 | |
| Aug 2023 | 252 | 252 | 744 | |
| Sep 2023 | 290 | 290 | 720 | |
| Oct 2023 | 157 | 157 | 744 | |
| Nov 2023 | 118 | 118 | 720 | |
| Dec 2023 | 298 | 298 | 744 | |
| Jan 2024 | 260 | 260 | 744 | |
| Feb 2024 | 51 | 51 | 696 | |
| Mar 2024 | 382 | 382 | 744 | |
| Apr 2024 | 210 | 210 | 720 | |
| May 2024 | 354 | 354 | 744 | |
| Jun 2024 | 192 | 192 | 720 | |
| Jul 2024 | 300 | 300 | 744 | |
| Aug 2024 | 227 | 227 | 744 | |
| Sep 2024 | 101 | 101 | 720 | |
| Oct 2024 | 50 | 50 | 744 | |
| Nov 2024 | 117 | 117 | 720 | |
| Dec 2024 | 224 | 224 | 744 | |
| Jan 2025 | 7 | 7 | 744 | |
| Feb 2025 | 0 | 0 | 672 | |
| Mar 2025 | 0 | 0 | 744 | |
| Apr 2025 | 261 | 261 | 720 | |
| May 2025 | 190 | 190 | 744 | |
| Jun 2025 | 0 | 0 | 720 | |
| Jul 2025 | 0 | 0 | 744 | |
| Aug 2025 | 0 | 0 | 744 | |
| Sep 2025 | 0 | 0 | 720 | |
| Oct 2025 | 0 | 0 | 744 | |
| Nov 2025 | 0 | 0 | 720 | |
| Dec 2025 | 0 | 0 | 744 | |
| Jan 2026 | 0 | 0 | 744 | |
| Feb 2026 | 0 | 0 | 672 | |
| Mar 2026 | 53 | 53 | 744 | |
| Apr 2026 | 0 | 0 | 720 | |
| May 2026 | 0 | 0 | 744 | |
| Jun 2026 | 0 | 0 | 720 | |
| Jul 2026 | 0 | 0 | 744 | |
| Aug 2026 | 0 | 0 | 744 | |
| Sep 2026 | 0 | 0 | 720 | |
| Oct 2026 | 35 | 35 | 744 | |
| Nov 2026 | 32 | 32 | 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.
Sources: CT DEEP CSO/SSO dashboard; CT DEEP Sewage Right-to-Know annual reports. Covered 2022-01-01 to 2026-11-02.
Show table
| Month | Days with a discharge | Coverage |
|---|---|---|
| Jan 2022 | 3 | |
| Feb 2022 | 5 | |
| Mar 2022 | 4 | |
| Apr 2022 | 9 | |
| May 2022 | 5 | |
| Jun 2022 | 5 | |
| Jul 2022 | 2 | |
| Aug 2022 | 4 | |
| Sep 2022 | 4 | |
| Oct 2022 | 5 | |
| Nov 2022 | 5 | |
| Dec 2022 | 8 | |
| Jan 2023 | 10 | |
| Feb 2023 | 0 | |
| Mar 2023 | 6 | |
| Apr 2023 | 5 | |
| May 2023 | 5 | |
| Jun 2023 | 5 | |
| Jul 2023 | 10 | |
| Aug 2023 | 6 | |
| Sep 2023 | 7 | |
| Oct 2023 | 3 | |
| Nov 2023 | 3 | |
| Dec 2023 | 7 | |
| Jan 2024 | 7 | |
| Feb 2024 | 2 | |
| Mar 2024 | 12 | |
| Apr 2024 | 7 | |
| May 2024 | 9 | |
| Jun 2024 | 6 | |
| Jul 2024 | 8 | |
| Aug 2024 | 5 | |
| Sep 2024 | 3 | |
| Oct 2024 | 1 | |
| Nov 2024 | 3 | |
| Dec 2024 | 5 | |
| Jan 2025 | 0 | |
| Feb 2025 | 0 | |
| Mar 2025 | 0 | |
| Apr 2025 | 5 | |
| May 2025 | 6 | |
| Jun 2025 | 0 | |
| Jul 2025 | 0 | |
| Aug 2025 | 0 | |
| Sep 2025 | 1 | |
| Oct 2025 | 0 | |
| Nov 2025 | 0 | |
| Dec 2025 | 0 | |
| Jan 2026 | 0 | |
| Feb 2026 | 0 | |
| Mar 2026 | 2 | |
| Apr 2026 | 0 | |
| May 2026 | 0 | |
| Jun 2026 | 0 | |
| Jul 2026 | 0 | |
| Aug 2026 | 0 | |
| Sep 2026 | 0 | |
| Oct 2026 | 1 | |
| Nov 2026 | 0 |
Discharge events per year, 2016 to 2026
684 events, 2016 to 2026.
- Combined sewer overflow
- Sanitary sewer overflow
- Bypass, blended or other
- Partly covered or sparse source
CT DEEP dashboard records begin 2021-12-02; where CT DEEP's annual report covers a discharger's month, the annual report is counted instead. CT DEEP annual reports (Sewage Right-to-Know) cover 2021-01-01 to 2026-11-02. CT DEEP's reporting archive runs 2016-07-04 to 2021-12-02.
Sources: CT DEEP CSO/SSO dashboard; CT DEEP Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.
Show table
| Year | Combined sewer overflow | Sanitary sewer overflow | Bypass, blended or other | Total | Coverage |
|---|---|---|---|---|---|
| 2016 | 26 | 1 | 0 | 27 | Partly covered or sparse source |
| 2017 | 48 | 9 | 0 | 57 | |
| 2018 | 73 | 16 | 2 | 91 | |
| 2019 | 47 | 4 | 2 | 53 | |
| 2020 | 63 | 5 | 12 | 80 | |
| 2021 | 141 | 12 | 8 | 161 | Partly covered or sparse source |
| 2022 | 55 | 2 | 0 | 57 | |
| 2023 | 65 | 3 | 4 | 72 | |
| 2024 | 68 | 1 | 2 | 71 | |
| 2025 | 10 | 2 | 0 | 12 | |
| 2026 | 0 | 3 | 0 | 3 |
Reported volume per year
Gallons, summed from the 238 events that gave a number (446 did not).
- Partly covered or sparse source
446 of 684 events gave no volume as a number (274 gave a range); only numbers are summed. Some CT DEEP annual-report volumes are given as text or ranges and are not summed. CT DEEP's 2016-2021 archive gives volumes as ranges ("20,001 - 50,000 gallons"); they are not summed.
Sources: CT DEEP CSO/SSO dashboard; CT DEEP Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.
Show table
| Year | Gallons | Events with a number | Events without | Coverage |
|---|---|---|---|---|
| 2016 | 0 | 0 | 27 | Partly covered or sparse source |
| 2017 | 0 | 14 | 43 | |
| 2018 | 2,760,007 | 4 | 87 | |
| 2019 | 2,650,015 | 3 | 50 | |
| 2020 | 32,800 | 6 | 74 | |
| 2021 | 36,592,779 | 56 | 105 | Partly covered or sparse source |
| 2022 | 835,740 | 3 | 54 | |
| 2023 | 48,698,581 | 72 | 0 | |
| 2024 | 19,446,009 | 68 | 3 | |
| 2025 | 1,246,000 | 10 | 2 | |
| 2026 | 1,300 | 2 | 1 |
Hours under advisory per year
Hours under advisory each year; 2026 to date.
- Advisory in effect
- Partly covered or sparse source
109 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.
Sources: CT DEEP CSO/SSO dashboard; CT DEEP Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.
Show table
| Year | Hours under advisory | Share of the year | Coverage |
|---|---|---|---|
| 2016 | 1,093 | 12.4% | Partly covered or sparse source |
| 2017 | 1,875 | 21.4% | |
| 2018 | 2,970 | 33.9% | |
| 2019 | 1,650 | 18.8% | |
| 2020 | 2,462 | 28.0% | |
| 2021 | 1,887 | 21.5% | Partly covered or sparse source |
| 2022 | 2,075 | 23.7% | |
| 2023 | 2,595 | 29.6% | |
| 2024 | 2,467 | 28.1% | |
| 2025 | 459 | 5.2% | |
| 2026 | 120 | 1.6% |
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.
Sources: CT DEEP CSO/SSO dashboard; CT DEEP Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.
Show table
| Month | Events | Years of records |
|---|---|---|
| Jan | 50 | 10 |
| Feb | 30 | 10 |
| Mar | 51 | 10 |
| Apr | 69 | 10 |
| May | 67 | 10 |
| Jun | 46 | 10 |
| Jul | 77 | 11 |
| Aug | 44 | 11 |
| Sep | 70 | 11 |
| Oct | 76 | 11 |
| Nov | 50 | 11 |
| Dec | 54 | 10 |
Discharge events by outfall
The 10 outfalls with the most events of 53, all years.
CT DEEP dashboard records begin 2021-12-02; where CT DEEP's annual report covers a discharger's month, the annual report is counted instead. CT DEEP annual reports (Sewage Right-to-Know) cover 2021-01-01 to 2026-11-02. CT DEEP's reporting archive runs 2016-07-04 to 2021-12-02.
Sources: CT DEEP CSO/SSO dashboard; CT DEEP Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.
Show table
| Outfall | Discharger | Events |
|---|---|---|
| Quinnipiac River CSOs: 015, 016, 019, 020 | Greater New Haven WPCA | 592 |
| Pump Station, 226 evansville ave meriden ct | Meriden | 7 |
| Treatment Plant, 999 Meriden-Waterbury Turnpike | Southington | 6 |
| Treatment Plant, 999 Meriden-Waterbury Turnpike, Southington, CT | SOUTHINGTON | 5 |
| Treatment Plant, 999 Meriden-Waterbury Turnpike Plantsville, CT 06479 | Southington | 5 |
| Pump Station, 226 Evansville Ave | Meriden | 4 |
| Sewer Main, 764 - 832 Quinnipiac Ave New Haven | Greater New Haven WPCA | 3 |
| Pump Station, 226 Evansville Ave, Meriden, CT | MERIDEN | 2 |
| Treatment Plant, 1122 Universal Drive North Haven, CT 06320 | North Haven WPCF | 2 |
| Treatment Plant, 155 John St | Wallingford | 2 |
| Other outfalls (43) | 54 | |
| Outfall not stated | 2 |
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.
- CT DEEP CSO/SSO dashboard: 2021-12-02 to now
- CT DEEP Sewage Right-to-Know annual reports: 2021-01-01 to now
- CT DEEP reporting archive 2016-2021: 2016-07-04 to 2021-12-02
- EPA ECHO sewer overflow events: 2022-05-03 to now (sparse)
Every event on Quinnipiac River
| Start | End | Discharger | Outfall | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|
| Oct 30, 2026, 1:00 PM EDT | ongoing (as reported) | PLAINVILLE WPCF | Sewer Main, 4 Carol Dr, Plainville, CT | Sanitary sewer overflow | “Ongoing - TBD” | PLAINVILLE WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11641, the source gives no report time, retrieved 2026-11-02 11:53 UTC · notice | Event: Sanitary sewer overflow, PLAINVILLE WPCF, Oct 30, 2026, 1:00 PM EDT · Map |
| Mar 27, 2026, 2:00 PM EDT | Mar 27, 2026, 7:00 PM EDT | NORTH HAVEN WPCF | Lateral - Private, 365 Universal Dr, North Haven, CT | Sanitary sewer overflow | 1,000 gal | NORTH HAVEN WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 10523, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 24, 2026, 10:00 AM EDT | ended, time not reported | WALLINGFORD | Manhole, 488 S Elm St, Wallingford, CT | Sanitary sewer overflow | 300 gal | WALLINGFORD (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 10510, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 29, 2025, 1:15 PM EST | Dec 29, 2025, 3:00 PM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10227, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 19, 2025, 9:15 AM EST | Dec 19, 2025, 11:15 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 1.17 million gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10192, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 2, 2025, 3:00 PM EST | Dec 2, 2025, 9:00 PM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10164, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 26, 2025, 12:45 AM EST | Nov 26, 2025, 1:45 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10146, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 25, 2025, 10:45 AM EST | Nov 26, 2025, 12:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10140, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Oct 31, 2025, 12:00 AM EDT | Oct 31, 2025, 3:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 232,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10086, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Oct 30, 2025, 5:30 PM EDT | Oct 30, 2025, 11:00 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 1.95 million gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10071, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Oct 22, 2025, 9:30 AM EDT | Oct 22, 2025, 4:45 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 10,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10054, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Oct 20, 2025, 5:15 AM EDT | Oct 20, 2025, 6:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 10,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10025, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Oct 13, 2025, 12:45 AM EDT | Oct 13, 2025, 2:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 4,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10005, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Oct 12, 2025, 7:00 PM EDT | Oct 12, 2025, 11:45 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 21,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10001, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Oct 8, 2025, 9:00 AM EDT | Oct 8, 2025, 10:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9983, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Sep 26, 2025, 7:00 AM EDT | not reported | PLAINVILLE WPCF | Pump Station, 66 Shuttle Meadow Rd, Plainville, CT | Sanitary sewer overflow | 450,000 gal | PLAINVILLE WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9948, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
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| Sep 24, 2025, 6:45 AM EDT | Sep 24, 2025, 6:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 12,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9944, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Sep 7, 2025, 9:30 AM EDT | Sep 7, 2025, 11:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9888, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Sep 6, 2025, 5:00 PM EDT | Sep 6, 2025, 7:00 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9875, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Sep 5, 2025, 3:00 AM EDT | Sep 5, 2025, 4:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 5,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9858, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Aug 21, 2025, 12:00 AM EDT | Aug 21, 2025, 1:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 1,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9823, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Aug 20, 2025, 11:00 PM EDT | Aug 21, 2025, 12:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 454,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9819, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Aug 1, 2025, 12:00 AM EDT | Aug 1, 2025, 2:15 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 27,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9775, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 31, 2025, 11:15 PM EDT | Jul 31, 2025, 11:30 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9766, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Jul 27, 2025, 7:45 AM EDT | Jul 27, 2025, 9:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 28,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9753, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Jul 20, 2025, 9:45 PM EDT | Jul 20, 2025, 9:30 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 35,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9737, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Jul 14, 2025, 9:30 PM EDT | Jul 14, 2025, 9:45 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 17,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9719, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Jun 10, 2025, 10:00 AM EDT | Jun 10, 2025, 10:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 56,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9647, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| May 31, 2025, 3:30 AM EDT | May 31, 2025, 6:45 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 18,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9606, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| May 22, 2025, 7:15 AM EDT | May 22, 2025, 12:30 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9572, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| May 15, 2025, 2:30 AM EDT | May 15, 2025, 3:45 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9537, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 15, 2025, 2:30 AM EDT | May 15, 2025, 3:45 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9537, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 14, 2025, 9:15 PM EDT | May 15, 2025, 12:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9531, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 14, 2025, 9:15 PM EDT | May 15, 2025, 12:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9531, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
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| May 9, 2025, 10:45 AM EDT | May 9, 2025, 3:45 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 100,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9493, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| May 9, 2025, 10:45 AM EDT | May 9, 2025, 3:45 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | “0.10 mgd” | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9493, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 6, 2025, 12:30 AM EDT | May 6, 2025, 6:45 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 263,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9458, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 6, 2025, 12:30 AM EDT | May 6, 2025, 6:45 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 263,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9458, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 5, 2025, 2:45 PM EDT | May 5, 2025, 4:00 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 2,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9452, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 5, 2025, 2:45 PM EDT | May 5, 2025, 4:00 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 2,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9452, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
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| May 4, 2025, 8:00 PM EDT | May 5, 2025, 12:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9438, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| May 4, 2025, 8:00 PM EDT | May 5, 2025, 12:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9438, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
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| Apr 26, 2025, 6:45 AM EDT | Apr 26, 2025, 9:00 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 525,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9409, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 26, 2025, 6:45 AM EDT | Apr 26, 2025, 9:00 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 525,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9409, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 15, 2025, 5:00 AM EDT | Apr 15, 2025, 6:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9383, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 15, 2025, 5:00 AM EDT | Apr 15, 2025, 6:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | “0.0 mgd no release” | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9383, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
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| Apr 12, 2025, 5:00 PM EDT | Apr 12, 2025, 9:45 PM EDT | CHESHIRE | Sewer Main, 1728 Highland Ave, Cheshire, CT | Sanitary sewer overflowrevised | 2,000 gal | CHESHIRE (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9366-2, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
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| Apr 12, 2025, 5:00 PM EDT | Apr 12, 2025, 9:45 PM EDT | CHESHIRE | Sewer Main, 1728 Highland Ave, Cheshire, CT | Sanitary sewer overflowrevised | 2,000 gal | CHESHIRE (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9366, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 12, 2025, 5:00 PM EDT | Apr 12, 2025, 9:45 PM EDT | CHESHIRE | Sewer Main, 1728 Highland Ave, Cheshire, CT | Sanitary sewer overflow | 2,000 gal | CHESHIRE (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9366, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
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| Apr 6, 2025, 3:15 AM EDT | Apr 6, 2025, 3:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 4,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9346, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 6, 2025, 3:15 AM EDT | Apr 6, 2025, 3:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 4,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9346, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 1, 2025, 12:00 AM EDT | Apr 1, 2025, 1:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9321, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 1, 2025, 12:00 AM EDT | Apr 1, 2025, 1:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9321, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 31, 2025, 9:30 AM EDT | Apr 1, 2025, 12:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9310, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 31, 2025, 9:30 AM EDT | Apr 1, 2025, 12:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9310, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 24, 2025, 3:30 PM EDT | Mar 24, 2025, 6:00 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9283, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 24, 2025, 3:30 PM EDT | Mar 24, 2025, 6:00 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9283, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 21, 2025, 2:30 AM EDT | Mar 21, 2025, 2:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9270, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 21, 2025, 2:30 AM EDT | Mar 21, 2025, 2:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9270, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 17, 2025, 1:30 AM EDT | Mar 17, 2025, 8:15 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 29,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9231, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 17, 2025, 1:30 AM EDT | Mar 17, 2025, 8:15 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 29,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9231, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 6, 2025, 12:00 AM EST | Mar 6, 2025, 3:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 4,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9175, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 6, 2025, 12:00 AM EST | Mar 6, 2025, 3:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 4,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9175, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 5, 2025, 7:15 PM EST | Mar 6, 2025, 12:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 1.05 million gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9162, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 5, 2025, 7:15 PM EST | Mar 6, 2025, 12:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 1.05 million gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9162, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 16, 2025, 8:00 AM EST | Feb 16, 2025, 10:00 PM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 598,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9100, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 16, 2025, 8:00 AM EST | Feb 16, 2025, 10:00 PM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 598,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9100, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jan 1, 2025, 12:15 AM EST | Jan 1, 2025, 1:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflowrevised | 145,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 8984, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jan 1, 2025, 12:15 AM EST | Jan 1, 2025, 1:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 145,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8984, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 30, 2024, 4:30 AM EST | Dec 30, 2024, 7:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 50,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x6a8d4cf0a209, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 30, 2024, 4:30 AM EST | Dec 30, 2024, 7:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 50,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8962, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 18, 2024, 8:15 PM EST | Dec 18, 2024, 11:00 PM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x0223d71372bb, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 17, 2024, 1:15 AM EST | Dec 17, 2024, 3:30 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xa3f2a845c8ea, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 11, 2024, 3:15 AM EST | Dec 11, 2024, 8:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 61,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xfbe287fb8ea1, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 11, 2024, 3:15 AM EST | Dec 11, 2024, 8:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 61,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8876, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 9, 2024, 5:15 PM EST | Dec 9, 2024, 6:00 PM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 33,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x7822087c4ba5, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 9, 2024, 5:15 PM EST | Dec 9, 2024, 6:00 PM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 33,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8869, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 28, 2024, 10:30 AM EST | Nov 28, 2024, 2:00 PM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 506,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xb816c8d41d61, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 22, 2024, 12:00 AM EST | Nov 22, 2024, 1:30 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 14,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x336f68d3602a, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 21, 2024, 7:45 AM EST | Nov 22, 2024, 12:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 134,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x9a71dc687393, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 21, 2024, 7:45 AM EST | Nov 22, 2024, 12:00 AM EST | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 134,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8800, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 7, 2024, 8:15 AM EDT | Oct 7, 2024, 10:15 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 42,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x92a0979f8d84, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 27, 2024, 12:00 AM EDT | Sep 27, 2024, 2:45 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 61,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xc34a092c78ee, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 27, 2024, 12:00 AM EDT | Sep 27, 2024, 2:45 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 61,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8691, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 26, 2024, 11:45 PM EDT | Sep 27, 2024, 12:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x01e9bce9f4c0, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 7, 2024, 6:30 PM EDT | Sep 7, 2024, 8:15 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 119,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x6e2cb4b60c44, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 7, 2024, 6:30 PM EDT | Sep 7, 2024, 8:15 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 119,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8643, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 26, 2024, 12:15 AM EDT | Aug 26, 2024, 2:45 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 113,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xa3f948be30cc, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 19, 2024, 12:00 AM EDT | Aug 19, 2024, 8:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 179,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x791d138c6496, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 19, 2024, 12:00 AM EDT | Aug 19, 2024, 8:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | “0.179 MGD” | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8575, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 6, 2024, 2:30 PM EDT | Aug 6, 2024, 5:00 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 82,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x5460e777f5df, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 6, 2024, 2:30 PM EDT | Aug 6, 2024, 5:00 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 82,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8475, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 4, 2024, 6:30 PM EDT | Aug 4, 2024, 7:45 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 1,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x32c2703362a4, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 4, 2024, 6:30 PM EDT | Aug 4, 2024, 7:45 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 1,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8455, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 3, 2024, 5:30 PM EDT | Aug 3, 2024, 6:45 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 248,000 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xce5f350006e9, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 3, 2024, 5:30 PM EDT | Aug 3, 2024, 6:45 PM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 248,000 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8444, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 29, 2024, 7:30 AM EDT | Jul 29, 2024, 10:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x153044a9ee07, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 29, 2024, 7:30 AM EDT | Jul 29, 2024, 10:30 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8424, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 23, 2024, 1:30 AM EDT | Jul 23, 2024, 2:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xf5ce29704b3c, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 23, 2024, 1:30 AM EDT | Jul 23, 2024, 2:00 AM EDT | Greater New Haven WPCA | Quinnipiac River CSOs: 015, 016, 019, 020 | Combined sewer overflow | 0 gal | Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 8397, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
Showing the newest 100 events of 803 events. See them all with filters.
Outfalls on this water
No outfall in the registry is matched to this water.
Dischargers: Greater New Haven Water Pollution Control Authority (East Shore WPAF), Town of Plainville WPCF, City of Waterbury WPCF.
Launches
Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, ODbL). · Quinnipiac River on OpenBoatLaunch
Sources covering this water
- CT DEEP CSO/SSO Performance Dashboard (QScend) · updating · last answered Nov 2, 2026, 6:53 AM EST
- ct-deep-annual · updating · last answered Nov 2, 2026, 6:54 AM EST
- ct-deep-archive · updating · last answered Nov 2, 2026, 6:54 AM EST
- 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
803 events placed on this water in this build.