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Connecticut / Waters /

West River

River in Connecticut, past Bethany, New Haven, West Haven and Woodbridge

Current status

No current status shown

No current status is assigned to this water outline. Check the water page for reports and any estimated downstream stretches. Why this status, and its source

This badge describes the water outline. Check the downstream stretches on the map and below for discharge statuses.

Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.

Check Greater New Haven Water Pollution Control Authority (East Shore WPAF)'s notices · Bookmark this water page and check it before each trip · Report a missing notice or error

About this status

Why this status: No current status: no report we track sets a status on this water outline now.

How long each status lasts, and why

Sources checked: CT DEEP CSO/SSO Performance Dashboard (QScend) (last successful check 2026-11-02 21:17 UTC); CT DEEP Sewage Right-to-Know annual report 2024 (last successful check 2026-11-02 21:18 UTC); CT DEEP reporting archive 2016-2021 (last successful check 2026-11-02 21:18 UTC). Status by DirtyWaterWatch, updated 2026-11-02 21:26 UTC.

No status does not mean the water is safe. Follow posted signs and local health advice.

Updated .

Estimated downstream stretches on West River

No downstream stretch has a current status here as of Nov 2, 2026, 4:26 PM EST. Check the reports below.

The last 90 days

Last 90 days, hour by hour. Red: discharge or advisory reported. Amber: caution. Hatched amber: end not confirmed. Grey: no current status on the water outline. Purple hatching: source update overdue.

No discharge, advisory or caution periods are shown for this water in this time span. Check downstream stretches and source coverage.

Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-02 21:26 UTC.

Reported discharges over time

  • Discharges affecting the West River in Connecticut, last 12 months00 affecting this stretch: 0 reported in Connecticut, none arriving from upstreamDecember 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once. Arriving discharges are estimated from modeled downstream reaches.
  • Days with a discharge affecting the West River in Connecticut, last 12 months24Reported on the West River in Connecticut: 24 · Arriving from outfalls upstream, estimated: 0December 2025 to November 2026A day counts once however many discharges were under way on it. Verified reports where available, else notices; revisions and duplicates counted once.
  • Hours with a discharge or advisory status on the West River in Connecticut, last 12 months607Reported on the West River in Connecticut: 607 · Arriving from outfalls upstream, estimated: 0December 2025 to November 2026Red hours by the map's rules: each discharge to its reported end plus the state's post-discharge period; overlapping hours count once.
  • 2026 season with a discharge or advisory status on the West River in Connecticut0.0%May to October 2026Share of May 1 to October 31 hours with red status by the map's rules, of the hours a source covered.
  • Records behind the last-90-days strip for the West River in Connecticut0Reported on the West River in Connecticut: 0 · Arriving from outfalls upstream, estimated: 0last 90 daysEvery distinct record the strip lists for its red, yellow and unresolved hours, notices and unresolved reports included; counted as the strip counts them.

This record covers the West River within Connecticut; the same river upstream is a separate record.

Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system. Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Treatment bypass: wastewater skips one or more treatment steps. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater. Outfall: a pipe or outlet where wastewater enters a water body.

Reported discharges per month

249 reported discharges, January 2022 to November 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other

Connecticut dashboard records begin December 2, 2021; annual-report rows that repeat a dashboard record are counted once. Connecticut's Sewage Right-to-Know annual reports cover January 1, 2021 to November 2, 2026.

Sources: Connecticut Department of Energy and Environmental Protection sewage overflow dashboard; Connecticut Sewage Right-to-Know annual reports. Records cover January 1, 2022 to November 2, 2026.

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Hours with a discharge or advisory status per month

Hours when this water had a discharge or advisory status under DirtyWaterWatch rules.

  • Discharge or advisory reported

108 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here. Connecticut dashboard records begin December 2, 2021; annual-report rows that repeat a dashboard record are counted once. Connecticut's Sewage Right-to-Know annual reports cover January 1, 2021 to November 2, 2026. Connecticut's reporting archive runs from July 4, 2016 to December 2, 2021.

Sources: Connecticut Department of Energy and Environmental Protection sewage overflow dashboard; Connecticut Sewage Right-to-Know annual reports; Connecticut Department of Energy and Environmental Protection reporting archive, 2016 to 2021. Records cover July 4, 2016 to November 2, 2026.

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Days with a reported discharge per month

A day counts when any counted discharge was under way on it, from its start to its reported end in Eastern Time; a report with no end counts its start day.

Sources: Connecticut Department of Energy and Environmental Protection sewage overflow dashboard; Connecticut Sewage Right-to-Know annual reports. Records cover January 1, 2022 to November 2, 2026.

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Reported discharges per year, 2016 to 2026

674 reported discharges, 2016 to 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other
  • Incomplete source coverage

Connecticut dashboard records begin December 2, 2021; annual-report rows that repeat a dashboard record are counted once. Connecticut's Sewage Right-to-Know annual reports cover January 1, 2021 to November 2, 2026. Connecticut's reporting archive runs from July 4, 2016 to December 2, 2021.

Sources: Connecticut Department of Energy and Environmental Protection sewage overflow dashboard; Connecticut Sewage Right-to-Know annual reports; Connecticut Department of Energy and Environmental Protection reporting archive, 2016 to 2021. Records cover July 4, 2016 to November 2, 2026.

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Reported volume per year

Gallons (axis: K thousand, M million), summed from the 238 reports that gave a volume as a number (436 did not).

  • Incomplete source coverage

436 of 674 discharge reports gave no volume as a number (272 gave a range); only numbers are summed. Connecticut's 2016 to 2021 archive gives volumes as ranges ("20,001 - 50,000 gallons"); they are not summed.

Sources: Connecticut Department of Energy and Environmental Protection sewage overflow dashboard; Connecticut Sewage Right-to-Know annual reports; Connecticut Department of Energy and Environmental Protection reporting archive, 2016 to 2021. Records cover July 4, 2016 to November 2, 2026.

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Hours with a discharge or advisory status per year

Hours with a discharge or advisory status each year under DirtyWaterWatch rules; 2026 to date.

  • Discharge or advisory reported
  • Incomplete source coverage

108 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here.

Sources: Connecticut Department of Energy and Environmental Protection sewage overflow dashboard; Connecticut Sewage Right-to-Know annual reports; Connecticut Department of Energy and Environmental Protection reporting archive, 2016 to 2021. Records cover July 4, 2016 to November 2, 2026.

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Share of the May to October season with a discharge or advisory status

Share of the hours from May 1 to October 31 with a discharge or advisory status under DirtyWaterWatch rules.

  • Discharge or advisory reported
  • Season with incomplete source coverage

Seasons with incomplete source coverage: 2016. The share is of the hours a source covered. 108 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here.

Sources: Connecticut Department of Energy and Environmental Protection sewage overflow dashboard; Connecticut Sewage Right-to-Know annual reports; Connecticut Department of Energy and Environmental Protection reporting archive, 2016 to 2021. Records cover July 4, 2016 to November 2, 2026.

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Reported discharges by calendar month, all years

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

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

Sources: Connecticut Department of Energy and Environmental Protection sewage overflow dashboard; Connecticut Sewage Right-to-Know annual reports; Connecticut Department of Energy and Environmental Protection reporting archive, 2016 to 2021. Records cover July 4, 2016 to November 2, 2026.

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Reported discharges by wastewater outlet

Wastewater outlets with the most tracked discharge records: 10 of 18, all years. Counts depend on reporting coverage and do not measure legal compliance or harm.

Connecticut dashboard records begin December 2, 2021; annual-report rows that repeat a dashboard record are counted once. Connecticut's Sewage Right-to-Know annual reports cover January 1, 2021 to November 2, 2026. Connecticut's reporting archive runs from July 4, 2016 to December 2, 2021.

Sources: Connecticut Department of Energy and Environmental Protection sewage overflow dashboard; Connecticut Sewage Right-to-Know annual reports; Connecticut Department of Energy and Environmental Protection reporting archive, 2016 to 2021. Records cover July 4, 2016 to November 2, 2026.

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How these charts are counted

We count each discharge once. Where a source publishes notices and confirmed reports, we use confirmed reports for an operator's month when available; otherwise we use notices. We combine revisions and exclude duplicate state reports copied by the U.S. Environmental Protection Agency (EPA). Monthly and yearly totals appear separately. Status hours follow this site's rules. Shaded gaps mean missing coverage, not zero discharges.

  • Connecticut Department of Energy and Environmental Protection sewage overflow dashboard: records from December 2, 2021 to the latest update
  • Connecticut Sewage Right-to-Know annual reports: records from January 1, 2021 to the latest update
  • Connecticut Department of Energy and Environmental Protection reporting archive, 2016 to 2021: records from July 4, 2016 to December 2, 2021

Reports linked to West River

Reports linked to West River, newest first
StartEnd Sewer operator OutletTypeVolumeSourceLinks
Dec 29, 2025, 1:15 PM EST Dec 29, 2025, 3:00 PM EST Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10224, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Dec 19, 2025, 9:15 AM EST Dec 19, 2025, 12:30 PM EST Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10189, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Dec 2, 2025, 3:00 PM EST Dec 2, 2025, 9:00 PM EST Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10161, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Nov 26, 2025, 12:45 AM EST Nov 26, 2025, 1:45 AM EST Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10143, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Nov 25, 2025, 10:45 AM EST Nov 26, 2025, 12:00 AM EST Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10141, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Nov 25, 2025, 9:30 AM EST Dec 24, 2025, 7:00 AM EST WEST HAVEN Manhole, 4 Spring St, West Haven, CT Sanitary sewer overflow (SSO)Duplicate 65 gallons WEST HAVEN (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10154-2, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Nov 25, 2025, 9:30 AM EST end not reported WEST HAVEN Manhole, 4 Spring St, West Haven, CT Sanitary sewer overflow (SSO)Duplicate “approx 30 to 50 gallons intermittently during peak flow times” WEST HAVEN (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10154, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Nov 25, 2025, 9:30 AM EST Dec 24, 2025, 7:00 AM EST WEST HAVEN Manhole, 4 Spring St, West Haven, CT Sanitary sewer overflow (SSO) 50 gallons WEST HAVEN (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 10154, the source gives no report time, retrieved 2026-11-02 11:20 UTC · Read the original notice
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Oct 31, 2025, 12:00 AM EDT Oct 31, 2025, 3:15 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 70,000 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10083, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Oct 30, 2025, 5:30 PM EDT Oct 30, 2025, 10:45 PM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 380,000 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10068, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Oct 22, 2025, 9:30 AM EDT Oct 22, 2025, 9:30 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10051, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Oct 20, 2025, 5:15 AM EDT Oct 20, 2025, 6:00 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10026, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Oct 13, 2025, 12:45 AM EDT Oct 13, 2025, 3:00 PM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 10006, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Oct 12, 2025, 7:00 PM EDT Oct 12, 2025, 11:45 PM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9999, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Oct 8, 2025, 9:00 AM EDT Oct 8, 2025, 10:00 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9980, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Sep 24, 2025, 6:45 AM EDT Sep 24, 2025, 7:30 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9941, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Sep 7, 2025, 9:30 AM EDT Sep 7, 2025, 11:00 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9889, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Sep 6, 2025, 5:00 PM EDT Sep 6, 2025, 7:00 PM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9872, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Sep 5, 2025, 3:00 AM EDT Sep 5, 2025, 4:00 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9859, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Aug 21, 2025, 12:00 AM EDT Aug 21, 2025, 1:00 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9824, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Aug 20, 2025, 11:00 PM EDT Aug 21, 2025, 12:00 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 391,000 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9816, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Aug 1, 2025, 12:00 AM EDT Aug 1, 2025, 12:15 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9776, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Jul 31, 2025, 11:15 PM EDT Jul 31, 2025, 11:30 PM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9767, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Jul 27, 2025, 7:45 AM EDT Jul 27, 2025, 8:00 AM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9750, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Jul 20, 2025, 9:45 PM EDT Jul 20, 2025, 9:30 PM EDT Greater New Haven WPCA West River CSOs: 003, 004, 005, 006 Combined sewer overflow (CSO)Duplicate 0 gallons Greater New Haven WPCA (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9738, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 21:17 UTC · Read the original notice
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Showing the latest 25 records of 721 records. See them all with filters.

All reports in Connecticut by year: 2025 (65 here) · 2024 (105 here) · 2023 (57 here) · 2022 (69 here) · 2021 (159 here) · 2020 (66 here) · 2019 (50 here) · 2018 (77 here) · 2017 (48 here) · 2016 (25 here)

Wastewater outlets on this water

Outfall: a pipe or outlet where wastewater enters a water body.

No wastewater outlet in our records is linked to this water.

Sewer operators listed for this water: Greater New Haven Water Pollution Control Authority (East Shore WPAF).

Boat launches

No public boat launch is listed in our records for this water.

Nearby waters

Sources covering this water

721 records linked to this water. Updated .