Stamford WPCA (Stamford WPCF)
SSO · Connecticut · Stamford
- NPDES permit
- CT0101087
- Outfalls
- none with coordinates yet
- Receiving waters
- Stamford Harbor; Rippowam River; Long Island Sound
- Tracked waters
- Stamford Harbor, CT, Long Island Sound, CT, Cove Harbor, CT
- Events tracked
- 84 discharges · latest Sep 13, 2026, 10:45 AM EDT
- Volume reported
- 1,243,574 gallons across the 44 discharges that give a volume (40 without one)
Source: discharger record from the project's research and EPA ECHO (dischargers.json); counts from the 84 event records below, as of 2026-11-02 11:56 UTC.
How it tells the public
CT DEEP Performance Dashboard (QScend QAlert reports shown in Zoho Analytics open views: https://deepct.qscend.mygovcenter.com/cms/cms?id=1); X/Twitter @CTSewageSpills (manual DEEP posts). Statutory local notice: operator must notify the chief elected official and local health official within 2 h; they must inform the public within 2 h of receipt (CGS 22a-424a(c)(3)) - channel varies by town.
Source: the project's research on each operator's notification channel (research/<state>/dischargers.json), checked by fetching the operator's pages.
Outfalls
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.
Event history
| Start | End | Water | Outfall | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|
| Sep 13, 2026, 10:45 AM EDT | Sep 13, 2026, 11:15 AM EDT | not placed | Manhole, 227 Henry St, Stamford, CT | Sanitary sewer overflow | “Discharge volume amount is unknown due to snap shot video in time.” | STAMFORD (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11515, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | Event: Sanitary sewer overflow, STAMFORD, Sep 13, 2026, 10:45 AM EDT |
| Sep 13, 2026, 9:30 AM EDT | Sep 13, 2026, 10:00 AM EDT | not placed | Manhole, 16 Alvord Ln, Stamford, CT | Sanitary sewer overflow | “Discharge volume amount is unknown due to snap shot video in time.” | STAMFORD (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11514, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | Event: Sanitary sewer overflow, STAMFORD, Sep 13, 2026, 9:30 AM EDT |
| Aug 20, 2026, 12:30 PM EDT | ended, time not reported | “East Branch Harbor Canal” (not placed) | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypass | 10,535 gal | STAMFORD (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11254, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | Event: Treatment plant bypass, STAMFORD, Aug 20, 2026, 12:30 PM EDT |
| Apr 8, 2026, 9:00 AM EDT | Apr 8, 2026, 2:00 PM EDT | not placed | Sewer Main, Strawberry Hill Ave, Stamford, CT | Sanitary sewer overflow | 50 gal | STAMFORD (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 10556, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 20, 2025, 8:30 AM EDT | Oct 20, 2025, 8:45 AM EDT | not placed | Sewer Main, 75 W Broad St, Stamford, CT | Sanitary sewer overflowrevised | 5 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10039-2, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 20, 2025, 8:30 AM EDT | ended, time not reported | not placed | Sewer Main, 75 W Broad St, Stamford, CT | Sanitary sewer overflowrevised | 5 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10039, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 20, 2025, 8:30 AM EDT | Oct 20, 2025, 8:45 AM EDT | not placed | Sewer Main, 75 W Broad St, Stamford, CT | Sanitary sewer overflow | 5 gal | STAMFORD (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 10039, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 10, 2025, 2:15 PM EDT | Sep 10, 2025, 2:15 PM EDT | Stamford Harbor, CT | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypassrevised | 7,291 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9914-2, 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) | |||||||
| Sep 10, 2025, 2:15 PM EDT | Sep 10, 2025, 2:15 PM EDT | Stamford Harbor, CT | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypassrevised | 7,291 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9914, 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) | |||||||
| Sep 10, 2025, 2:15 PM EDT | Sep 10, 2025, 2:15 PM EDT | Stamford Harbor, CT | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypass | 7,291 gal | STAMFORD (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9914, 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 10, 2025, 9:00 AM EST | Feb 10, 2025, 9:30 AM EST | “Unknown at this point in time.” (not placed) | Pump Station, 110 Burwood Ave, Stamford, CT | Sanitary sewer overflow | 300 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9083-2, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 10, 2025, 9:00 AM EST | Feb 10, 2025, 9:30 AM EST | “Unknown at this point in time.” (not placed) | Pump Station, 110 Burwood Ave, Stamford, CT | Sanitary sewer overflow | 300 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9083, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 22, 2024, 10:15 AM EDT | Aug 22, 2024, 10:15 AM EDT | Stamford Harbor, CT | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypass | 1,000 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x986faf747da9, 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 18, 2024, 4:30 PM EDT | Aug 18, 2024, 7:30 PM EDT | “Stamford's Harbor East Branch” (not placed) | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypass | 150,000 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xab8701fafe20, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 18, 2024, 10:30 AM EDT | Aug 18, 2024, 10:30 AM EDT | Stamford Harbor, CT | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypass | 1,000 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xa1a4fa8432b1, 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, 8:45 PM EDT | Aug 6, 2024, 8:45 PM EDT | Stamford Harbor, CT | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypass | 3,000 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xe08db5306176, 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) | |||||||
| Apr 30, 2024, 11:00 AM EDT | Apr 30, 2024, 2:00 PM EDT | not placed | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypass | 4,000 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x13eb59b88669, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 23, 2024, 9:00 PM EDT | Mar 23, 2024, 9:15 PM EDT | “Possibly leaked into Holly Pond.” (not placed) | Manhole, E Main St, Stamford, CT | Sanitary sewer overflow | 20 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x74413e742ab3, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 21, 2023, 11:30 AM EST | Dec 21, 2023, 12:00 PM EST | not placed | Sewer Main, Lockwood Ave, Stamford, CT | Sanitary sewer overflow | 30 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2024) via ct-deep-annual, record xde25004fb5f9, published Jan 9, 2025, 2:55 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 10, 2023, 1:15 PM EDT | Oct 10, 2023, 1:30 PM EDT | Long Island Sound, CT | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypass | 15,000 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2024) via ct-deep-annual, record x61380c59cae9, published Jan 9, 2025, 2:55 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) | |||||||
| Aug 23, 2023, 10:45 AM EDT | Aug 24, 2023, 5:30 PM EDT | not placed | Sewer Main, 315 Ocean Dr W, Stamford, CT | Sanitary sewer overflow | 720 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2024) via ct-deep-annual, record x7f59c27c5cbd, published Jan 9, 2025, 2:55 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 27, 2023, 1:30 PM EDT | Mar 27, 2023, 2:30 PM EDT | not placed | Sewer Main, Ocean Dr W, Stamford, CT | Sanitary sewer overflow | 48 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2024) via ct-deep-annual, record xfd7341360996, published Jan 9, 2025, 2:55 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 19, 2022, 7:45 PM EST | Dec 19, 2022, 11:45 PM EST | Long Island Sound, CT | Sewer Main, 280 E Main St, Stamford, CT | Sanitary sewer overflow | 240 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record xab8859627e68, published Jan 9, 2025, 2:54 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) | |||||||
| Oct 9, 2022, 9:00 PM EDT | Oct 9, 2022, 9:00 PM EDT | not placed | Treatment Plant, 111 Harbor View Ave, Stamford, CT | Treatment plant bypass | “less than 50 gal” | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record xd3d30c7ca499, published Jan 9, 2025, 2:54 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 12, 2022, 11:45 AM EDT | Sep 12, 2022, 12:00 PM EDT | not placed | Manhole, 69 Sea Beach Dr, Stamford, CT | Sanitary sewer overflow | 5 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record xceb624edf42e, published Jan 9, 2025, 2:54 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 8, 2022, 10:30 AM EDT | Sep 8, 2022, 8:30 PM EDT | not placed | Sewer Main, 70 Halliwell Dr, Stamford, CT | Sanitary sewer overflow | 60 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record xb31478046b47, published Jan 9, 2025, 2:54 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| May 13, 2022, 12:45 PM EDT | May 13, 2022, 1:45 PM EDT | “Small amount of raw sewage reached the storm drain leading to L.I.S.” (not placed) | Lateral - Private, 37 Southfield Ave, Stamford, CT | Sanitary sewer overflow | 20 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record xefe727661220, published Jan 9, 2025, 2:54 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| May 9, 2022, 9:30 AM EDT | May 9, 2022, 9:30 AM EDT | not placed | Manhole, 127 1st St, Stamford, CT | Sanitary sewer overflow | “3-6 gallons.” | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record x5644d6802a3f, published Jan 9, 2025, 2:54 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 16, 2022, 8:00 AM EDT | Mar 16, 2022, 8:15 AM EDT | not placed | Manhole, 228 Stillwater Ave, Stamford, CT | Sanitary sewer overflow | 10 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record x5959e0f99f91, published Jan 9, 2025, 2:54 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 2, 2022, 9:00 AM EST | Mar 2, 2022, 10:00 AM EST | not placed | Sewer Main, 263 Strawberry Hill Ave, Stamford, CT | Sanitary sewer overflow | 150 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record x0a5d1866fee1, published Jan 9, 2025, 2:54 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Jan 6, 2022, 7:15 AM EST | Jan 6, 2022, 10:00 AM EST | not placed | Manhole, 13 Seaton Rd, Stamford, CT | Sanitary sewer overflow | “1-5 gallons” | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record x2ab76c55907b, published Jan 9, 2025, 2:54 PM EST, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 13, 2021, 8:30 AM EST | Dec 29, 2021, 1:00 PM EST | not placed | Sewer Main, 79 Givens Ave, Stamford, CT | Sanitary sewer overflow | 25,200 gal | STAMFORD (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xdd885efce043, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 17, 2021, 8:30 PM EST | Nov 17, 2021, 9:00 PM EST | not placed | Manhole, Virgil ST. | Sanitary sewer overflow | 50 gal | Stamford (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x47d72cd25acd, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 17, 2021, 8:30 PM EST | Nov 17, 2021, 9:00 PM EST | not placed | Manhole, Virgil ST. | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964349, reported Nov 18, 2021, 6:57 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2021, 12:00 PM EDT | Oct 8, 2021, 12:40 PM EDT | “No” (not placed) | Sewer Main, Washington Blvd. | Sanitary sewer overflow | 50 gal | Stamford (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xfe8aeaf76366, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2021, 12:00 PM EDT | Oct 8, 2021, 12:40 PM EDT | “No” (not placed) | Sewer Main, Washington Blvd. | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964484, reported Oct 8, 2021, 12:51 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 2, 2021, 4:38 AM EDT | Sep 2, 2021, 4:38 AM EDT | Long Island Sound, CT, Stamford Harbor, CT | Treatment Plant, Pump Station Road and Harbor View Avenue | Treatment plant bypass | 1 million gal | Stamford (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x27065de4dedb, published Oct 9, 2024, 12:47 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 2, 2021, 4:38 AM EDT | not reported | Long Island Sound, CT, Stamford Harbor, CT | Treatment Plant, Pump Station Road and Harbor View Avenue | Treatment plant bypass | “Not known” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963573, reported Sep 2, 2021, 5:00 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 2, 2021, 2:43 AM EDT | Sep 2, 2021, 3:21 AM EDT | not placed | Lateral - Private, 55 Wardwell ST. | Sanitary sewer overflow | 30 gal | Stamford (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x21fd386ea902, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 2, 2021, 2:43 AM EDT | Sep 2, 2021, 3:21 AM EDT | not placed | Lateral - Private, 55 Wardwell ST. | Sanitary sewer overflow | “Undetermined” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963647, reported Sep 2, 2021, 11:25 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 1, 2021, 11:51 PM EDT | Sep 2, 2021, 12:50 AM EDT | not placed | Lateral - Private, 102 Seaside Ave. | Sanitary sewer overflow | 30 gal | Stamford (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x0530d58bd4b0, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 1, 2021, 11:51 PM EDT | Sep 2, 2021, 12:50 AM EDT | not placed | Lateral - Private, 102 Seaside Ave. | Sanitary sewer overflow | “Undetermined” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963660, reported Sep 2, 2021, 11:20 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 16, 2021, 6:58 AM EDT | Jul 16, 2021, 7:09 AM EDT | Stamford Harbor, CT | Treatment Plant, 111 Harbor View Avenue | Treatment plant bypass | 3,000 gal | Stamford (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x5cefc90f1c1b, published Oct 9, 2024, 12:47 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 16, 2021, 6:58 AM EDT | Jul 16, 2021, 7:09 AM EDT | Stamford Harbor, CT | Treatment Plant, 111 Harbor View Avenue | Treatment plant bypass | 1,650 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964062, reported Jul 16, 2021, 7:39 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 9, 2021, 9:34 AM EDT | Jul 9, 2021, 11:35 AM EDT | Long Island Sound, CT | Manhole, Weed Avenue, Shippan Avenue, Myrtle Avenue, Canal ST. | Sanitary sewer overflow | 750 gal | Stamford (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xcc317ea315cc, published Oct 9, 2024, 12:47 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 9, 2021, 9:34 AM EDT | Jul 9, 2021, 11:35 AM EDT | Long Island Sound, CT | Manhole, Weed Avenue, Shippan Avenue, Myrtle Avenue, Canal ST. | Sanitary sewer overflow | “501 - 1,000 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963873, reported Jul 9, 2021, 11:40 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 20, 2021, 11:00 AM EDT | May 20, 2021, 12:13 PM EDT | “Rippowam” (not placed) | Sewer Main, 1864 Summer ST. | Sanitary sewer overflow | 30 gal | Stamford (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xb96533791cd8, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| May 20, 2021, 11:00 AM EDT | May 20, 2021, 12:13 PM EDT | “Rippowam” (not placed) | Sewer Main, 1864 Summer ST. | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964811, reported May 20, 2021, 12:19 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 13, 2021, 9:30 PM EDT | Apr 13, 2021, 9:36 PM EDT | Long Island Sound, CT | Treatment Plant, 111 Harborview Avenue | Treatment plant bypass | 10,000 gal | Stamford (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xc266f6fb6660, published Oct 9, 2024, 12:47 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) | |||||||
| Apr 13, 2021, 9:30 PM EDT | Apr 13, 2021, 9:36 PM EDT | Long Island Sound, CT | Treatment Plant, 111 Harborview Avenue | Treatment plant bypass | “same” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964130, reported Apr 15, 2021, 10:08 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 10, 2021, 10:00 AM EST | Feb 24, 2021, 7:00 AM EST | Stamford Harbor, CT | Treatment Plant, 111 Harbor View At the treatment plant. | Treatment plant bypass | 9,000 gal | Stamford (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xb3bb56990735, published Oct 9, 2024, 12:47 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) | |||||||
| Feb 10, 2021, 10:00 AM EST | Feb 24, 2021, 7:00 AM EST | Stamford Harbor, CT | Treatment Plant, 111 Harbor View At the treatment plant. | Treatment plant bypass | “5,001 - 20,000 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965357, reported Feb 18, 2021, 9:35 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 10, 2021, 10:00 AM EST | Feb 24, 2021, 12:00 AM EST | Stamford Harbor, CT | Treatment Plant, 111 Harbor View At the treatment plant. | Treatment plant bypass | “5,001 - 20,000 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965356, reported Feb 18, 2021, 9:35 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 10, 2021, 10:00 AM EST | not reported | Stamford Harbor, CT | Treatment Plant, 111 Harbor View At the treatment plant. | Treatment plant bypass | “5,001 - 20,000 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965355, reported Feb 18, 2021, 9:35 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 29, 2020, 3:10 PM EST | Dec 29, 2020, 3:25 PM EST | Stamford Harbor, CT | Pump Station, Cummings Point Road | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965645, reported Dec 29, 2020, 3:33 PM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jan 27, 2020, 6:45 PM EST | Jan 27, 2020, 6:45 PM EST | not placed | Manhole, Intersection of Fairfield Ave. and Stillwater Ave. | Sanitary sewer overflow | “Undetermined” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965025, reported Jan 29, 2020, 8:00 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 28, 2018, 1:15 PM EDT | Aug 28, 2018, 2:30 PM EDT | not placed | Lateral - Private, West Broad ST. | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965543, reported Aug 28, 2018, 3:10 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 28, 2018, 1:15 PM EDT | Aug 28, 2018, 2:30 PM EDT | not placed | Lateral - Private, West Broad ST. | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965542, reported Aug 28, 2018, 3:10 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 9, 2018, 7:51 AM EDT | May 9, 2018, 8:15 AM EDT | not placed | Sewer Main, Myrtle Avenue | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965541, reported May 9, 2018, 8:58 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 2, 2018, 8:15 AM EST | Mar 2, 2018, 8:35 AM EST | not placed | Manhole, West Ave. | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965403, reported Mar 2, 2018, 8:37 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 27, 2018, 10:30 AM EST | Feb 27, 2018, 10:58 AM EST | not placed | Sewer Main, Barry Place | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964904, reported Mar 1, 2018, 10:47 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 27, 2018, 10:30 AM EST | Feb 27, 2018, 10:58 AM EST | not placed | Sewer Main, Barry Place | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964903, reported Feb 27, 2018, 11:06 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 15, 2018, 2:30 PM EST | Feb 15, 2018, 3:00 PM EST | not placed | Manhole, Custer Street | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965269, reported Mar 1, 2018, 10:47 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 15, 2018, 2:30 PM EST | Feb 15, 2018, 3:00 PM EST | not placed | Manhole, Custer Street | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965268, reported Feb 15, 2018, 3:38 PM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 29, 2017, 1:20 PM EST | Dec 29, 2017, 1:40 PM EST | not placed | Lateral - Private, Atlantic ST. | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964703, reported Mar 1, 2018, 10:47 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 29, 2017, 1:20 PM EST | Dec 29, 2017, 1:40 PM EST | not placed | Lateral - Private, Atlantic ST. | Sanitary sewer overflow | “1 - 50” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964702, reported Dec 29, 2017, 2:07 PM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 20, 2017, 12:40 PM EST | Nov 20, 2017, 12:41 PM EST | not placed | Lateral - Private, 79 Robin Hood Rd. | Sanitary sewer overflow | “1 - 50 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965575, reported Mar 1, 2018, 10:47 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 20, 2017, 12:40 PM EST | Nov 20, 2017, 12:41 PM EST | not placed | Lateral - Private, 79 Robin Hood Rd. | Sanitary sewer overflow | 0 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965574, reported Nov 20, 2017, 3:26 PM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 7, 2017, 7:41 PM EDT | Oct 7, 2017, 8:44 PM EDT | not placed | Manhole, 116 Virgil st | Sanitary sewer overflow | 0 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964463, reported Oct 7, 2017, 9:41 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 7, 2017, 7:41 PM EDT | Oct 7, 2017, 8:44 PM EDT | not placed | Manhole, 116 Virgil st | Sanitary sewer overflow | “51 - 500 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964462, reported Mar 1, 2018, 10:47 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 28, 2017, 9:30 AM EDT | not reported | “Mill River” (not placed) | Sewer Main, Smith St. and Mill River St. | Sanitary sewer overflow | “1 - 50 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965662, reported Mar 1, 2018, 10:47 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 28, 2017, 9:30 AM EDT | Sep 28, 2017, 11:30 AM EDT | “Mill River” (not placed) | Sewer Main, Smith St. and Mill River St. | Sanitary sewer overflow | “0 - 50 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965661, reported Sep 29, 2017, 1:17 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 25, 2017, 2:00 PM EDT | Sep 25, 2017, 4:08 PM EDT | Cove Harbor, CT | Sewer Main, Cove Rd. | Sanitary sewer overflow | 0 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965512, reported Sep 25, 2017, 3:11 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 25, 2017, 2:00 PM EDT | Sep 25, 2017, 3:08 PM EDT | Cove Harbor, CT | Sewer Main, Cove Rd. | Sanitary sewer overflow | “1 - 50 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965511, reported Mar 1, 2018, 10:47 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 27, 2017, 2:35 PM EDT | Aug 27, 2017, 3:20 PM EDT | not placed | Manhole, 68 Halloween Blvd | Sanitary sewer overflow | “1 - 50 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964964, reported Mar 1, 2018, 10:47 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 27, 2017, 2:35 PM EDT | Aug 27, 2017, 3:20 PM EDT | not placed | Manhole, 68 Halloween Blvd | Sanitary sewer overflow | “0 - 50 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964963, reported Aug 27, 2017, 3:41 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 24, 2017, 1:30 PM EDT | Jul 24, 2017, 1:50 PM EDT | not placed | Lateral - Private, Spruce St. | Sanitary sewer overflow | “1 - 50 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964483, reported Mar 1, 2018, 10:47 AM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 24, 2017, 1:30 PM EDT | Jul 24, 2017, 1:50 PM EDT | not placed | Lateral - Private, Spruce St. | Sanitary sewer overflow | “0 - 50 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964482, reported Jul 24, 2017, 2:48 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 13, 2017, 12:15 PM EDT | Jul 13, 2017, 1:00 PM EDT | Stamford Harbor, CT | Treatment Plant, Harborview Ave. | Treatment plant bypass | 0 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964253, reported Jul 13, 2017, 2:05 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 10, 2017, 10:30 AM EDT | Jul 10, 2017, 10:40 AM EDT | Stamford Harbor, CT | Lateral - Private, Dyke Lane | Sanitary sewer overflow | 0 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963167, reported Jul 10, 2017, 11:00 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 5, 2017, 2:00 PM EDT | Jul 5, 2017, 2:40 PM EDT | not placed | Manhole, St.Marys St. | Sanitary sewer overflow | 0 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964572, reported Jul 5, 2017, 2:42 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 14, 2017, 9:45 AM EDT | May 14, 2017, 9:46 AM EDT | “Downgradient stormwater detention basin” (not placed) | Pump Station, Arden Lane | Sanitary sewer overflow | 0 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963144, reported May 15, 2017, 8:07 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 23, 2017, 10:45 AM EDT | Apr 23, 2017, 12:15 PM EDT | not placed | Sewer Main, Myano Ln | Sanitary sewer overflow | 0 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964770, reported Apr 23, 2017, 2:04 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 12, 2017, 10:20 AM EDT | Apr 12, 2017, 10:42 AM EDT | not placed | Lateral - Private, Gkenbrook | Sanitary sewer overflow | 0 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965498, reported Apr 12, 2017, 5:29 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 21, 2017, 8:05 PM EDT | Mar 21, 2017, 10:32 PM EDT | Stamford Harbor, CT | Sewer Main, Ludlow St and Canal St | Sanitary sewer overflow | 0 gal | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964296, reported Mar 21, 2017, 10:38 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 13, 2016, 4:00 PM EST | Dec 15, 2016, 3:30 AM EST | Stamford Harbor, CT | Treatment Plant, 90 Magee Ave | Treatment plant bypass | “5,001-100,000 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964118, reported Dec 15, 2016, 1:59 PM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 14, 2016, 10:00 AM EDT | Aug 14, 2016, 12:15 PM EDT | “Canal” (not placed) | Manhole, Myrtle Ave. | Sanitary sewer overflow | “51-500 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964461, reported Aug 14, 2016, 12:23 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 12, 2016, 3:54 AM EDT | Aug 12, 2016, 3:54 AM EDT | Stamford Harbor, CT | Treatment Plant, 111 harborview ave | Treatment plant bypass | “5,001-100,000 gallons” | Stamford (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964257, reported Aug 12, 2016, 5:37 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
History
- Discharge events, last 12 months4Dec 2025 to Nov 2026
- Days with a discharge, last 12 months3Dec 2025 to Nov 2026
- Hours under advisory, last 12 months103Dec 2025 to Nov 2026; on this discharger's reports
- 2026 season under advisory1.1%May to October; 50 h
Discharge events per month
27 events, Jan 2022 to Nov 2026. Counted from 21 verified or annual reports, 6 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 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Feb 2022 | 0 | 0 | 0 | 0 | ||
| Mar 2022 | 0 | 2 | 0 | 2 | Verified or annual reports | |
| Apr 2022 | 0 | 0 | 0 | 0 | ||
| May 2022 | 0 | 2 | 0 | 2 | Verified or annual reports | |
| Jun 2022 | 0 | 0 | 0 | 0 | ||
| Jul 2022 | 0 | 0 | 0 | 0 | ||
| Aug 2022 | 0 | 0 | 0 | 0 | ||
| Sep 2022 | 0 | 2 | 0 | 2 | Verified or annual reports | |
| Oct 2022 | 0 | 0 | 1 | 1 | Verified or annual reports | |
| Nov 2022 | 0 | 0 | 0 | 0 | ||
| Dec 2022 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Jan 2023 | 0 | 0 | 0 | 0 | ||
| Feb 2023 | 0 | 0 | 0 | 0 | ||
| Mar 2023 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Apr 2023 | 0 | 0 | 0 | 0 | ||
| May 2023 | 0 | 0 | 0 | 0 | ||
| Jun 2023 | 0 | 0 | 0 | 0 | ||
| Jul 2023 | 0 | 0 | 0 | 0 | ||
| Aug 2023 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Sep 2023 | 0 | 0 | 0 | 0 | ||
| Oct 2023 | 0 | 0 | 1 | 1 | Verified or annual reports | |
| Nov 2023 | 0 | 0 | 0 | 0 | ||
| Dec 2023 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Jan 2024 | 0 | 0 | 0 | 0 | ||
| Feb 2024 | 0 | 0 | 0 | 0 | ||
| Mar 2024 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Apr 2024 | 0 | 0 | 1 | 1 | Verified or annual reports | |
| May 2024 | 0 | 0 | 0 | 0 | ||
| Jun 2024 | 0 | 0 | 0 | 0 | ||
| Jul 2024 | 0 | 0 | 0 | 0 | ||
| Aug 2024 | 0 | 0 | 4 | 4 | Verified or annual reports | |
| Sep 2024 | 0 | 0 | 0 | 0 | ||
| Oct 2024 | 0 | 0 | 0 | 0 | ||
| Nov 2024 | 0 | 0 | 0 | 0 | ||
| Dec 2024 | 0 | 0 | 0 | 0 | ||
| Jan 2025 | 0 | 0 | 0 | 0 | ||
| Feb 2025 | 0 | 2 | 0 | 2 | Verified or annual reports | |
| Mar 2025 | 0 | 0 | 0 | 0 | ||
| Apr 2025 | 0 | 0 | 0 | 0 | ||
| May 2025 | 0 | 0 | 0 | 0 | ||
| Jun 2025 | 0 | 0 | 0 | 0 | ||
| Jul 2025 | 0 | 0 | 0 | 0 | ||
| Aug 2025 | 0 | 0 | 0 | 0 | ||
| Sep 2025 | 0 | 0 | 1 | 1 | Public notices (no report yet) | |
| Oct 2025 | 0 | 1 | 0 | 1 | Public notices (no report yet) | |
| 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 | 0 | 0 | 0 | ||
| Apr 2026 | 0 | 1 | 0 | 1 | Public notices (no report yet) | |
| May 2026 | 0 | 0 | 0 | 0 | ||
| Jun 2026 | 0 | 0 | 0 | 0 | ||
| Jul 2026 | 0 | 0 | 0 | 0 | ||
| Aug 2026 | 0 | 0 | 1 | 1 | Public notices (no report yet) | |
| Sep 2026 | 0 | 2 | 0 | 2 | Public notices (no report yet) | |
| Oct 2026 | 0 | 0 | 0 | 0 | ||
| Nov 2026 | 0 | 0 | 0 | 0 |
Hours under advisory per month
Hours this discharger's reports put a water under an advisory, by the map's red rules.
- Advisory in effect
4 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. Official beach and cyanobacteria advisories are counted on water pages only. 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 | 51 | 51 | 744 | |
| Feb 2022 | 0 | 0 | 672 | |
| Mar 2022 | 97 | 97 | 744 | |
| Apr 2022 | 0 | 0 | 720 | |
| May 2022 | 97 | 97 | 744 | |
| Jun 2022 | 0 | 0 | 720 | |
| Jul 2022 | 0 | 0 | 744 | |
| Aug 2022 | 0 | 0 | 744 | |
| Sep 2022 | 106 | 106 | 720 | |
| Oct 2022 | 48 | 48 | 744 | |
| Nov 2022 | 0 | 0 | 720 | |
| Dec 2022 | 52 | 52 | 744 | |
| Jan 2023 | 0 | 0 | 744 | |
| Feb 2023 | 0 | 0 | 672 | |
| Mar 2023 | 49 | 49 | 744 | |
| Apr 2023 | 0 | 0 | 720 | |
| May 2023 | 0 | 0 | 744 | |
| Jun 2023 | 0 | 0 | 720 | |
| Jul 2023 | 0 | 0 | 744 | |
| Aug 2023 | 79 | 79 | 744 | |
| Sep 2023 | 0 | 0 | 720 | |
| Oct 2023 | 48 | 48 | 744 | |
| Nov 2023 | 0 | 0 | 720 | |
| Dec 2023 | 49 | 49 | 744 | |
| Jan 2024 | 0 | 0 | 744 | |
| Feb 2024 | 0 | 0 | 696 | |
| Mar 2024 | 48 | 48 | 744 | |
| Apr 2024 | 13 | 13 | 720 | |
| May 2024 | 38 | 38 | 744 | |
| Jun 2024 | 0 | 0 | 720 | |
| Jul 2024 | 0 | 0 | 744 | |
| Aug 2024 | 153 | 153 | 744 | |
| Sep 2024 | 0 | 0 | 720 | |
| Oct 2024 | 0 | 0 | 744 | |
| Nov 2024 | 0 | 0 | 720 | |
| Dec 2024 | 0 | 0 | 744 | |
| Jan 2025 | 0 | 0 | 744 | |
| Feb 2025 | 49 | 49 | 672 | |
| Mar 2025 | 0 | 0 | 744 | |
| Apr 2025 | 0 | 0 | 720 | |
| May 2025 | 0 | 0 | 744 | |
| Jun 2025 | 0 | 0 | 720 | |
| Jul 2025 | 0 | 0 | 744 | |
| Aug 2025 | 0 | 0 | 744 | |
| Sep 2025 | 48 | 48 | 720 | |
| Oct 2025 | 48 | 48 | 744 | |
| Nov 2025 | 0 | 0 | 720 | |
| Dec 2025 | 0 | 0 | 744 | |
| Jan 2026 | 0 | 0 | 744 | |
| Feb 2026 | 0 | 0 | 672 | |
| Mar 2026 | 0 | 0 | 744 | |
| Apr 2026 | 53 | 53 | 720 | |
| May 2026 | 0 | 0 | 744 | |
| Jun 2026 | 0 | 0 | 720 | |
| Jul 2026 | 0 | 0 | 744 | |
| Aug 2026 | 0 | 0 | 744 | |
| Sep 2026 | 50 | 50 | 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.
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 | 1 | |
| Feb 2022 | 0 | |
| Mar 2022 | 2 | |
| Apr 2022 | 0 | |
| May 2022 | 2 | |
| Jun 2022 | 0 | |
| Jul 2022 | 0 | |
| Aug 2022 | 0 | |
| Sep 2022 | 2 | |
| Oct 2022 | 1 | |
| Nov 2022 | 0 | |
| Dec 2022 | 1 | |
| Jan 2023 | 0 | |
| Feb 2023 | 0 | |
| Mar 2023 | 1 | |
| Apr 2023 | 0 | |
| May 2023 | 0 | |
| Jun 2023 | 0 | |
| Jul 2023 | 0 | |
| Aug 2023 | 2 | |
| Sep 2023 | 0 | |
| Oct 2023 | 1 | |
| Nov 2023 | 0 | |
| Dec 2023 | 1 | |
| Jan 2024 | 0 | |
| Feb 2024 | 0 | |
| Mar 2024 | 1 | |
| Apr 2024 | 1 | |
| May 2024 | 0 | |
| Jun 2024 | 0 | |
| Jul 2024 | 0 | |
| Aug 2024 | 3 | |
| Sep 2024 | 0 | |
| Oct 2024 | 0 | |
| Nov 2024 | 0 | |
| Dec 2024 | 0 | |
| Jan 2025 | 0 | |
| Feb 2025 | 1 | |
| Mar 2025 | 0 | |
| Apr 2025 | 0 | |
| May 2025 | 0 | |
| Jun 2025 | 0 | |
| Jul 2025 | 0 | |
| Aug 2025 | 0 | |
| Sep 2025 | 1 | |
| Oct 2025 | 1 | |
| Nov 2025 | 0 | |
| Dec 2025 | 0 | |
| Jan 2026 | 0 | |
| Feb 2026 | 0 | |
| Mar 2026 | 0 | |
| Apr 2026 | 1 | |
| May 2026 | 0 | |
| Jun 2026 | 0 | |
| Jul 2026 | 0 | |
| Aug 2026 | 1 | |
| Sep 2026 | 1 | |
| Oct 2026 | 0 | |
| Nov 2026 | 0 |
Discharge events per year, 2016 to 2026
84 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 | 0 | 1 | 2 | 3 | Partly covered or sparse source |
| 2017 | 0 | 20 | 1 | 21 | |
| 2018 | 0 | 8 | 0 | 8 | |
| 2019 | 0 | 0 | 0 | 0 | |
| 2020 | 0 | 2 | 0 | 2 | |
| 2021 | 0 | 13 | 10 | 23 | Partly covered or sparse source |
| 2022 | 0 | 8 | 1 | 9 | |
| 2023 | 0 | 3 | 1 | 4 | |
| 2024 | 0 | 1 | 5 | 6 | |
| 2025 | 0 | 3 | 1 | 4 | |
| 2026 | 0 | 3 | 1 | 4 |
Reported volume per year
Gallons, summed from the 44 events that gave a number (40 did not).
- Partly covered or sparse source
40 of 84 events gave no volume as a number (33 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 | 3 | Partly covered or sparse source |
| 2017 | 0 | 10 | 11 | |
| 2018 | 0 | 0 | 8 | |
| 2019 | 0 | 0 | 0 | |
| 2020 | 0 | 0 | 2 | |
| 2021 | 1,049,790 | 12 | 11 | Partly covered or sparse source |
| 2022 | 485 | 6 | 3 | |
| 2023 | 15,798 | 4 | 0 | |
| 2024 | 159,020 | 6 | 0 | |
| 2025 | 7,896 | 4 | 0 | |
| 2026 | 10,585 | 2 | 2 |
Hours under advisory per year
Hours under advisory each year; 2026 to date.
- Advisory in effect
- Partly covered or sparse source
4 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. Official beach and cyanobacteria advisories are counted on water pages only.
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 | 182 | 2.1% | Partly covered or sparse source |
| 2017 | 685 | 7.8% | |
| 2018 | 243 | 2.8% | |
| 2019 | 0 | 0.0% | |
| 2020 | 96 | 1.1% | |
| 2021 | 1,163 | 13.3% | Partly covered or sparse source |
| 2022 | 451 | 5.2% | |
| 2023 | 225 | 2.6% | |
| 2024 | 252 | 2.9% | |
| 2025 | 145 | 1.7% | |
| 2026 | 103 | 1.4% |
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 | 2 | 10 |
| Feb | 10 | 10 |
| Mar | 6 | 10 |
| Apr | 6 | 10 |
| May | 6 | 10 |
| Jun | 0 | 10 |
| Jul | 9 | 11 |
| Aug | 12 | 11 |
| Sep | 15 | 11 |
| Oct | 7 | 11 |
| Nov | 4 | 11 |
| Dec | 7 | 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 |
|---|---|---|
| Treatment Plant, 111 Harbor View Ave, Stamford, CT | STAMFORD | 9 |
| Treatment Plant, 111 Harbor View At the treatment plant. | Stamford | 4 |
| Pump Station, 110 Burwood Ave, Stamford, CT | STAMFORD | 2 |
| Manhole, Virgil ST. | Stamford | 2 |
| Sewer Main, Washington Blvd. | Stamford | 2 |
| Treatment Plant, Pump Station Road and Harbor View Avenue | Stamford | 2 |
| Lateral - Private, 55 Wardwell ST. | Stamford | 2 |
| Lateral - Private, 102 Seaside Ave. | Stamford | 2 |
| Treatment Plant, 111 Harbor View Avenue | Stamford | 2 |
| Manhole, Weed Avenue, Shippan Avenue, Myrtle Avenue, Canal ST. | Stamford | 2 |
| Other outfalls (43) | 55 |
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