Borough of Naugatuck WPCF
BYPASS · Connecticut · Naugatuck
- NPDES permit
- CT0100641
- Outfalls
- none with coordinates yet
- Receiving waters
- Naugatuck River
- Tracked waters
- none
- Events tracked
- 71 discharges · latest Aug 13, 2026, 10:30 AM EDT
- Volume reported
- 11,533,805 gallons across the 36 discharges that give a volume (35 without one)
Source: discharger record from the project's research and EPA ECHO (dischargers.json); counts from the 71 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
Event history
| Start | End | Water | Outfall | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|
| Aug 13, 2026, 10:30 AM EDT | ended, time not reported | not placed | Sewer Main, 12 Galpin St, Naugatuck, CT | Sanitary sewer overflow | 1,000 gal | NAUGATUCK WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11223, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice | Event: Sanitary sewer overflow, NAUGATUCK WPCF, Aug 13, 2026, 10:30 AM EDT |
| Apr 13, 2026, 7:45 AM EDT | ended, time not reported | “Storm drain in side of road which could lead into Vanasso Pond.” (not placed) | Manhole, 216 May St, Naugatuck, CT | Sanitary sewer overflow | “<1000” | NAUGATUCK WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 10569, 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) | |||||||
| Mar 18, 2026, 2:45 PM EDT | ended, time not reported | not placed | Manhole, 89 Walnut St, Naugatuck, CT | Sanitary sewer overflow | 50 gal | NAUGATUCK WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 10472, 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) | |||||||
| Feb 9, 2026, 7:30 PM EST | ended, time not reported | not placed | Manhole, 61 Nettleton Ave, Naugatuck, CT | Sanitary sewer overflow | 300 gal | NAUGATUCK WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 10299, 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) | |||||||
| Feb 5, 2026, 8:30 AM EST | Feb 5, 2026, 11:00 AM EST | “Hop Brook” (not placed) | Manhole, 451 Church St, Naugatuck, CT | Sanitary sewer overflow | 1,000 gal | NAUGATUCK WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 10294, 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) | |||||||
| Dec 19, 2025, 7:00 AM EST | Dec 19, 2025, 11:15 PM EST | “Naugatuck river” (not placed) | Treatment Plant, 500 Cherry St, Naugatuck, CT | Treatment plant bypassrevised | 6 million gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10188, 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) | |||||||
| Dec 19, 2025, 7:00 AM EST | Dec 19, 2025, 11:15 PM EST | “Naugatuck river” (not placed) | Treatment Plant, 500 Cherry St, Naugatuck, CT | Treatment plant bypass | “Approximately 6MGD” | NAUGATUCK WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 10188, 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) | |||||||
| May 6, 2025, 5:30 PM EDT | May 6, 2025, 7:30 PM EDT | not placed | Lateral - Private, 65 May Ave, Naugatuck, CT | Sanitary sewer overflowrevised | 10 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9651-2, 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) | |||||||
| May 6, 2025, 5:30 PM EDT | May 6, 2025, 7:30 PM EDT | not placed | Lateral - Private, 65 May Ave, Naugatuck, CT | Sanitary sewer overflowrevised | “Minimal” | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9651, 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) | |||||||
| May 6, 2025, 5:30 PM EDT | May 6, 2025, 7:30 PM EDT | not placed | Lateral - Private, 65 May Ave, Naugatuck, CT | Sanitary sewer overflow | “Minimal” | NAUGATUCK WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9651, 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) | |||||||
| May 6, 2025, 5:30 AM EDT | May 7, 2025, 7:30 AM EDT | “Naugatuck River” (not placed) | Treatment Plant, 500 Cherry St, Naugatuck, CT | Treatment plant bypassrevised | 10.5 million gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9473-2, 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) | |||||||
| May 6, 2025, 5:30 AM EDT | May 7, 2025, 7:30 AM EDT | “Naugatuck River” (not placed) | Treatment Plant, 500 Cherry St, Naugatuck, CT | Treatment plant bypassrevised | 11 million gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9473, 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) | |||||||
| May 6, 2025, 5:30 AM EDT | May 7, 2025, 7:30 AM EDT | “Naugatuck River” (not placed) | Treatment Plant, 500 Cherry St, Naugatuck, CT | Treatment plant bypass | 11 million gal | NAUGATUCK WPCF (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9473, 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) | |||||||
| Mar 31, 2025, 12:00 AM EDT | Mar 31, 2025, 2:00 AM EDT | not placed | Basement, 118 Ward St, Naugatuck, CT | Sanitary sewer overflow | 300 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9306-2, 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) | |||||||
| Mar 31, 2025, 12:00 AM EDT | Mar 31, 2025, 2:00 AM EDT | not placed | Basement, 118 Ward St, Naugatuck, CT | Sanitary sewer overflow | 300 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9306, 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 18, 2024, 8:00 PM EDT | Aug 19, 2024, 12:00 PM EDT | “Naugatuck River” (not placed) | Manhole, Cross St, Naugatuck, CT | Sanitary sewer overflow | 190,000 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x1138b175043b, 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) | |||||||
| Jul 13, 2024, 9:15 PM EDT | Jul 13, 2024, 10:30 PM EDT | “Thurston Pond” (not placed) | Manhole, 63 Melbourne St, Naugatuck, CT | Sanitary sewer overflow | 1,500 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x3ff7408ae787, 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) | |||||||
| Jun 27, 2024, 9:00 AM EDT | Jun 27, 2024, 12:00 PM EDT | “Long Meadow Pond Brook” (not placed) | Sewer Main, 35 Elm St, Naugatuck, CT | Sanitary sewer overflow | 1,800 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x4b215f1315fc, 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) | |||||||
| Feb 2, 2024, 6:30 AM EST | Feb 2, 2024, 8:00 AM EST | not placed | Basement, 4 Celentano Dr, Naugatuck, CT | Sanitary sewer overflow | 175 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record xb9ed6355b00a, 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) | |||||||
| Jan 22, 2024, 8:00 AM EST | Jan 22, 2024, 10:45 AM EST | not placed | Sewer Main, 5 Springdale Ave, Naugatuck, CT | Sanitary sewer overflow | 200 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x718c0e86e634, 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) | |||||||
| Jan 10, 2024, 6:15 AM EST | Jan 10, 2024, 10:00 AM EST | “Naugatuck River” (not placed) | Manhole, 1 Borgnis Rd, Beacon Falls, CT | Sanitary sewer overflow | 5,000 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2025) via ct-deep-annual, record x2c14db45188a, 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 18, 2023, 10:00 AM EST | Dec 19, 2023, 1:00 AM EST | “Naugatuck” (not placed) | Manhole, 2 Cotton Hollow Rd, Naugatuck, CT | Sanitary sewer overflow | 67,500 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2024) via ct-deep-annual, record xe7b95b2ed46b, 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) | |||||||
| Nov 17, 2023, 8:00 AM EST | Nov 17, 2023, 12:00 PM EST | “Storm catch basin” (not placed) | Pump Station, 5 Inwood Dr, Naugatuck, CT | Sanitary sewer overflow | 300 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2024) via ct-deep-annual, record x6233584ff7c3, 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 1, 2023, 9:30 AM EDT | Oct 1, 2023, 11:30 AM EDT | not placed | Manhole, 607 Rubber Ave, Naugatuck, CT | Sanitary sewer overflow | 400 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2024) via ct-deep-annual, record xa60cb05bef5f, 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) | |||||||
| Sep 6, 2023, 8:45 AM EDT | Sep 6, 2023, 10:00 AM EDT | not placed | Basement, 27 Morning Dove Rd, Naugatuck, CT | Sanitary sewer overflow | 300 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2024) via ct-deep-annual, record x8708631a10dd, 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 6, 2023, 5:00 PM EST | Mar 6, 2023, 6:15 PM EST | not placed | Manhole, 173 Crestwood Dr, Naugatuck, CT | Sanitary sewer overflow | 0 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2024) via ct-deep-annual, record x8298f5b8ab3f, 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 1, 2023, 7:00 AM EST | Mar 1, 2023, 8:00 AM EST | not placed | Manhole, 302 High St, Naugatuck, CT | Sanitary sewer overflow | 750 gal | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2024) via ct-deep-annual, record xac0c7348be3a, 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) | |||||||
| Sep 26, 2022, 6:00 PM EDT | Sep 26, 2022, 7:45 PM EDT | not placed | Basement, 14 Brennan St, Naugatuck, CT | Sanitary sewer overflow | “less than 100 gal” | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record xe9ef770ac68f, 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 28, 2022, 9:00 AM EST | Jan 28, 2022, 10:30 AM EST | not placed | Sewer Main, 360 Maple Hill Rd, Naugatuck, CT | Sanitary sewer overflow | “less than 100 gallons” | NAUGATUCK WPCF (CT DEEP Sewage Right-to-Know annual report 2023) via ct-deep-annual, record xb1badb6b4182, 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) | |||||||
| Nov 16, 2021, 10:00 AM EST | Nov 16, 2021, 11:30 AM EST | not placed | Basement, 99 Cold Spring Circle | Sanitary sewer overflow | 75 gal | Naugatuck WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x90640b5bf3e2, 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 16, 2021, 10:00 AM EST | Nov 16, 2021, 11:30 AM EST | not placed | Basement, 99 Cold Spring Circle | Sanitary sewer overflow | “51 - 500 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965237, reported Nov 16, 2021, 1:08 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) | |||||||
| Sep 2, 2021, 7:00 AM EDT | Sep 2, 2021, 9:15 AM EDT | “Beacon Hill Brook” (not placed) | Manhole, 261-267 Cross St | Sanitary sewer overflow | 84,000 gal | Naugatuck WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xc30870ca3ddb, 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, 7:00 AM EDT | Sep 2, 2021, 9:15 AM EDT | “Beacon Hill Brook” (not placed) | Manhole, 261-267 Cross St | Sanitary sewer overflow | 85,000 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963689, reported Sep 2, 2021, 8:18 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, 7:00 AM EDT | Sep 2, 2021, 9:15 AM EDT | “Beacon Hill Brook” (not placed) | Manhole, 261-267 Cross St | Sanitary sewer overflow | 85,000 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963688, reported Sep 2, 2021, 8:18 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, 7:00 AM EDT | Sep 2, 2021, 9:15 AM EDT | “Beacon Hill Brook” (not placed) | Manhole, 261-267 Cross St | Sanitary sewer overflow | “501 - 1,000 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963687, reported Sep 2, 2021, 8:18 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, 7:00 AM EDT | Sep 2, 2021, 9:15 AM EDT | “Beacon Hill Brook” (not placed) | Manhole, 261-267 Cross St | Sanitary sewer overflow | “501 - 1,000 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963686, reported Sep 2, 2021, 8:18 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, 7:00 AM EDT | not reported | “Beacon Hill Brook” (not placed) | Manhole, 261-267 Cross St | Sanitary sewer overflow | “501 - 1,000 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963685, reported Sep 2, 2021, 8:18 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) | |||||||
| Aug 4, 2021, 7:45 PM EDT | Aug 4, 2021, 9:30 PM EDT | “Filling Mill Brook” (not placed) | Manhole, 174 Prospect St | Sanitary sewer overflow | 750 gal | Naugatuck WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xe8351125950b, 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) | |||||||
| Aug 4, 2021, 7:45 PM EDT | Aug 4, 2021, 9:30 PM EDT | “Filling Mill Brook” (not placed) | Manhole, 174 Prospect St | Sanitary sewer overflow | “501 - 1,000 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964834, reported Aug 4, 2021, 10:20 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) | |||||||
| Jun 6, 2021, 5:15 PM EDT | Jun 6, 2021, 7:01 PM EDT | “Naugatuck River” (not placed) | Pump Station, 500 Cherry St ext | Sanitary sewer overflow | 1,500 gal | Naugatuck WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x4d6eb67249cf, 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) | |||||||
| Jun 6, 2021, 5:15 PM EDT | Jun 6, 2021, 7:01 PM EDT | “Naugatuck River” (not placed) | Pump Station, 500 Cherry St ext | Sanitary sewer overflow | “1,001 - 5,000 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963124, reported Jun 6, 2021, 7:05 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) | |||||||
| Mar 26, 2021, 11:30 AM EDT | Mar 26, 2021, 1:30 PM EDT | not placed | Manhole, 641 Maplewood Hill Rd | Sanitary sewer overflow | 150 gal | Naugatuck WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xf2ebb3709b95, 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) | |||||||
| Mar 26, 2021, 11:30 AM EDT | Mar 26, 2021, 1:30 PM EDT | not placed | Manhole, 641 Maplewood Hill Rd | Sanitary sewer overflow | “51 - 500 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964783, reported Mar 26, 2021, 5:12 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 3, 2020, 5:00 PM EST | Dec 3, 2020, 6:15 PM EST | not placed | Basement, 83 School St | Sanitary sewer overflow | “1 - 50” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964847, reported Dec 4, 2020, 7:03 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 24, 2020, 8:00 PM EDT | Sep 24, 2020, 9:30 PM EDT | not placed | Manhole, 14 Salem st | Sanitary sewer overflow | “1 - 50” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965258, reported Sep 25, 2020, 7:25 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) | |||||||
| Jul 14, 2020, 8:45 AM EDT | Jul 14, 2020, 9:45 AM EDT | not placed | Basement, 12 Bradley st | Sanitary sewer overflow | “1 - 50” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964839, reported Jul 14, 2020, 11:31 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 6, 2020, 6:00 PM EST | Mar 6, 2020, 11:00 PM EST | not placed | Basement, 128 Millville Ave | Sanitary sewer overflow | “51 - 500 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964838, reported Mar 6, 2020, 7:33 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 7, 2020, 1:45 PM EST | Jan 7, 2020, 2:45 PM EST | not placed | Basement, 93 Evening Star Dr | Sanitary sewer overflow | “1 - 50” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965255, reported Jan 7, 2020, 4:46 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 15, 2019, 6:15 PM EST | Dec 15, 2019, 8:00 PM EST | not placed | Manhole, Intersection of High st and May st | Sanitary sewer overflow | “51 - 500 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964954, reported Dec 15, 2019, 8:49 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 10, 2019, 12:30 PM EST | Dec 10, 2019, 5:00 PM EST | not placed | Manhole, 628 New Haven Rd | Sanitary sewer overflow | “51 - 500 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965371, reported Dec 10, 2019, 2:04 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 12, 2019, 1:00 PM EDT | Oct 12, 2019, 2:08 PM EDT | “Naugatuck River” (not placed) | Manhole, 120 Cross St | Sanitary sewer overflow | “501 - 1,000 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964933, reported Oct 12, 2019, 2:18 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) | |||||||
| Jun 4, 2019, 12:45 PM EDT | Jun 4, 2019, 2:00 PM EDT | “Beacon Hill brook” (not placed) | Lateral - Private, 76 general Dalton drive | Sanitary sewer overflow | 5,000 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965522, reported Jun 4, 2019, 1:42 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 2, 2019, 9:30 AM EDT | May 2, 2019, 10:15 AM EDT | “Naugatuck River” (not placed) | Pump Station, 260 Maple Hill Rd | Sanitary sewer overflow | 500 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964045, reported May 2, 2019, 10:34 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 4, 2019, 9:00 AM EDT | Apr 4, 2019, 10:43 AM EDT | not placed | Basement, 99 cold spring circle | Sanitary sewer overflow | 5 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965271, reported Apr 4, 2019, 10:51 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 1, 2019, 10:45 AM EDT | Apr 1, 2019, 1:00 PM EDT | not placed | Basement, 10 Vincent place | Sanitary sewer overflow | “Undetermined” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965594, reported Apr 1, 2019, 11:26 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 28, 2019, 4:00 PM EST | Feb 28, 2019, 6:30 PM EST | not placed | Basement, 36 Hill St | Sanitary sewer overflow | “51 - 500 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965221, reported Feb 28, 2019, 7:45 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) | |||||||
| Feb 11, 2019, 7:15 AM EST | Feb 11, 2019, 10:00 AM EST | not placed | Basement, 238 Scott street | Sanitary sewer overflow | “Undetermined” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965655, reported Feb 11, 2019, 8:47 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) | |||||||
| Jan 28, 2019, 11:30 PM EST | Jan 28, 2019, 12:10 PM EST | “Long meadow brook” (not placed) | Manhole, 24 cherry st naugatuck ct 06770 | Sanitary sewer overflow | “1 - 50” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965565, reported Jan 28, 2019, 1:19 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 21, 2018, 1:05 PM EST | Dec 21, 2018, 4:30 PM EST | “Naugatuck River” (not placed) | Manhole, Cherry St ext | Sanitary sewer overflow | “Undetermined” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963365, reported Dec 21, 2018, 1:48 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 18, 2018, 11:25 AM EST | Dec 18, 2018, 3:30 PM EST | not placed | Sewer Main, 100 Church St | Sanitary sewer overflow | “50-500” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965407, reported Dec 18, 2018, 11:38 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 14, 2018, 10:55 AM EST | Nov 14, 2018, 11:30 AM EST | “Naugatuck river” (not placed) | Treatment Plant, 500 Cherry St ext | Treatment plant bypass | 300 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963570, reported Nov 14, 2018, 12:23 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 31, 2018, 2:00 PM EDT | Oct 31, 2018, 2:30 PM EDT | not placed | Basement, 145 Locust St | Sanitary sewer overflow | “1 - 50” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965222, reported Oct 31, 2018, 6:20 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 30, 2017, 6:30 PM EST | Dec 30, 2017, 7:40 PM EST | not placed | Basement, 22 Alma street | Sanitary sewer overflow | “1 - 50” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965239, 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 30, 2017, 6:30 PM EST | Dec 30, 2017, 7:40 PM EST | not placed | Basement, 22 Alma street | Sanitary sewer overflow | “1 - 50” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965238, reported Dec 30, 2017, 7:56 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 24, 2017, 7:17 PM EST | Dec 24, 2017, 9:00 PM EST | not placed | Manhole, 716 Osborne rd naugatuck ct 06770 | Sanitary sewer overflow | “1,001 - 5,000 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965536, 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 24, 2017, 7:17 PM EST | Dec 24, 2017, 9:00 PM EST | not placed | Manhole, 716 Osborne rd naugatuck ct 06770 | Sanitary sewer overflow | “1,001 - 5,000 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965535, reported Dec 24, 2017, 7:23 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 30, 2017, 10:12 PM EDT | Oct 30, 2017, 11:30 PM EDT | “Naugatuck river” (not placed) | Manhole, 180 high street naugatuck ct 06770 | Sanitary sewer overflow | 0 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964890, reported Oct 30, 2017, 10:28 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 30, 2017, 10:12 PM EDT | Oct 30, 2017, 11:30 PM EDT | “Naugatuck river” (not placed) | Manhole, 180 high street naugatuck ct 06770 | Sanitary sewer overflow | “501 - 1,000 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964889, 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 16, 2017, 1:00 PM EDT | Aug 16, 2017, 2:00 PM EDT | “Long Meadow Pond Brook” (not placed) | Manhole, 24 Cherry St | Sanitary sewer overflow | 0 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964409, reported Aug 16, 2017, 2:40 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 16, 2017, 1:00 PM EDT | Aug 16, 2017, 2:00 PM EDT | “Long Meadow Pond Brook” (not placed) | Manhole, 24 Cherry St | Sanitary sewer overflow | “1 - 50 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964408, 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) | |||||||
| Apr 6, 2017, 9:20 PM EDT | Apr 6, 2017, 10:10 PM EDT | not placed | Basement, 93 Irving street | Sanitary sewer overflow | 0 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964953, reported Apr 7, 2017, 7:16 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 15, 2017, 7:00 AM EDT | Mar 15, 2017, 3:00 PM EDT | “Naugatuck River” (not placed) | Treatment Plant, Cherry Street | Treatment plant bypass | 0 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963019, reported Mar 1, 2017, 11:59 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 7, 2017, 2:14 PM EST | Feb 7, 2017, 4:15 PM EST | “Naugatuck River” (not placed) | Manhole, 451 Church St | Sanitary sewer overflow | 0 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965195, reported Feb 7, 2017, 2:23 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 20, 2017, 1:40 PM EST | Jan 20, 2017, 2:50 PM EST | “Naugatuck River” (not placed) | Pump Station, 354 Maple Hill Rd | Sanitary sewer overflow | 650 gal | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964054, reported Jan 20, 2017, 3:02 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 18, 2016, 10:30 AM EST | Nov 18, 2016, 11:30 AM EST | “Naugatuck River” (not placed) | Sewer Main, 198 Meadow St | Sanitary sewer overflow | “0-50 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964965, reported Nov 18, 2016, 12:06 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 15, 2016, 1:00 PM EST | Nov 15, 2016, 1:45 PM EST | not placed | Basement, 27 Morning Dove Rd | Sanitary sewer overflow | “0-50 gallons” | Naugatuck WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964759, reported Nov 15, 2016, 1:53 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) | |||||||
History
- Discharge events, last 12 months6Dec 2025 to Nov 2026
- Days with a discharge, last 12 months6Dec 2025 to Nov 2026
- Hours under advisory, last 12 months115Dec 2025 to Nov 2026; on this discharger's reports
- 2026 season under advisory0.0%May to October; 0 h
Discharge events per month
24 events, Jan 2022 to Nov 2026. Counted from 16 verified or annual reports, 8 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 | 0 | 0 | 0 | ||
| Apr 2022 | 0 | 0 | 0 | 0 | ||
| May 2022 | 0 | 0 | 0 | 0 | ||
| Jun 2022 | 0 | 0 | 0 | 0 | ||
| Jul 2022 | 0 | 0 | 0 | 0 | ||
| Aug 2022 | 0 | 0 | 0 | 0 | ||
| Sep 2022 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Oct 2022 | 0 | 0 | 0 | 0 | ||
| Nov 2022 | 0 | 0 | 0 | 0 | ||
| Dec 2022 | 0 | 0 | 0 | 0 | ||
| Jan 2023 | 0 | 0 | 0 | 0 | ||
| Feb 2023 | 0 | 0 | 0 | 0 | ||
| Mar 2023 | 0 | 2 | 0 | 2 | 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 | 0 | 0 | 0 | ||
| Sep 2023 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Oct 2023 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Nov 2023 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Dec 2023 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Jan 2024 | 0 | 2 | 0 | 2 | Verified or annual reports | |
| Feb 2024 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Mar 2024 | 0 | 0 | 0 | 0 | ||
| Apr 2024 | 0 | 0 | 0 | 0 | ||
| May 2024 | 0 | 0 | 0 | 0 | ||
| Jun 2024 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Jul 2024 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Aug 2024 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| Sep 2024 | 0 | 0 | 0 | 0 | ||
| Oct 2024 | 0 | 0 | 0 | 0 | ||
| Nov 2024 | 0 | 0 | 0 | 0 | ||
| Dec 2024 | 0 | 0 | 0 | 0 | ||
| Jan 2025 | 0 | 0 | 0 | 0 | ||
| Feb 2025 | 0 | 0 | 0 | 0 | ||
| Mar 2025 | 0 | 2 | 0 | 2 | Verified or annual reports | |
| Apr 2025 | 0 | 0 | 0 | 0 | ||
| May 2025 | 0 | 1 | 1 | 2 | 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 | 0 | 0 | 0 | ||
| Oct 2025 | 0 | 0 | 0 | 0 | ||
| Nov 2025 | 0 | 0 | 0 | 0 | ||
| Dec 2025 | 0 | 0 | 1 | 1 | Public notices (no report yet) | |
| Jan 2026 | 0 | 0 | 0 | 0 | ||
| Feb 2026 | 0 | 2 | 0 | 2 | Public notices (no report yet) | |
| Mar 2026 | 0 | 1 | 0 | 1 | Public notices (no report yet) | |
| 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 | 1 | 0 | 1 | Public notices (no report yet) | |
| Sep 2026 | 0 | 0 | 0 | 0 | ||
| 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
6 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 | 50 | 50 | 744 | |
| Feb 2022 | 0 | 0 | 672 | |
| Mar 2022 | 0 | 0 | 744 | |
| Apr 2022 | 0 | 0 | 720 | |
| May 2022 | 0 | 0 | 744 | |
| Jun 2022 | 0 | 0 | 720 | |
| Jul 2022 | 0 | 0 | 744 | |
| Aug 2022 | 0 | 0 | 744 | |
| Sep 2022 | 50 | 50 | 720 | |
| Oct 2022 | 0 | 0 | 744 | |
| Nov 2022 | 0 | 0 | 720 | |
| Dec 2022 | 0 | 0 | 744 | |
| Jan 2023 | 0 | 0 | 744 | |
| Feb 2023 | 0 | 0 | 672 | |
| Mar 2023 | 98 | 98 | 744 | |
| Apr 2023 | 0 | 0 | 720 | |
| May 2023 | 0 | 0 | 744 | |
| Jun 2023 | 0 | 0 | 720 | |
| Jul 2023 | 0 | 0 | 744 | |
| Aug 2023 | 0 | 0 | 744 | |
| Sep 2023 | 49 | 49 | 720 | |
| Oct 2023 | 50 | 50 | 744 | |
| Nov 2023 | 52 | 52 | 720 | |
| Dec 2023 | 63 | 63 | 744 | |
| Jan 2024 | 103 | 103 | 744 | |
| Feb 2024 | 50 | 50 | 696 | |
| Mar 2024 | 0 | 0 | 744 | |
| Apr 2024 | 0 | 0 | 720 | |
| May 2024 | 0 | 0 | 744 | |
| Jun 2024 | 51 | 51 | 720 | |
| Jul 2024 | 49 | 49 | 744 | |
| Aug 2024 | 64 | 64 | 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 | 0 | 0 | 672 | |
| Mar 2025 | 24 | 24 | 744 | |
| Apr 2025 | 26 | 26 | 720 | |
| May 2025 | 74 | 74 | 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 | 64 | 64 | 744 | |
| Jan 2026 | 0 | 0 | 744 | |
| Feb 2026 | 51 | 51 | 672 | |
| Mar 2026 | 0 | 0 | 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 | 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 | 0 | |
| Apr 2022 | 0 | |
| May 2022 | 0 | |
| Jun 2022 | 0 | |
| Jul 2022 | 0 | |
| Aug 2022 | 0 | |
| Sep 2022 | 1 | |
| Oct 2022 | 0 | |
| Nov 2022 | 0 | |
| Dec 2022 | 0 | |
| Jan 2023 | 0 | |
| Feb 2023 | 0 | |
| Mar 2023 | 2 | |
| Apr 2023 | 0 | |
| May 2023 | 0 | |
| Jun 2023 | 0 | |
| Jul 2023 | 0 | |
| Aug 2023 | 0 | |
| Sep 2023 | 1 | |
| Oct 2023 | 1 | |
| Nov 2023 | 1 | |
| Dec 2023 | 2 | |
| Jan 2024 | 2 | |
| Feb 2024 | 1 | |
| Mar 2024 | 0 | |
| Apr 2024 | 0 | |
| May 2024 | 0 | |
| Jun 2024 | 1 | |
| Jul 2024 | 1 | |
| Aug 2024 | 2 | |
| Sep 2024 | 0 | |
| Oct 2024 | 0 | |
| Nov 2024 | 0 | |
| Dec 2024 | 0 | |
| Jan 2025 | 0 | |
| Feb 2025 | 0 | |
| Mar 2025 | 1 | |
| Apr 2025 | 0 | |
| May 2025 | 2 | |
| Jun 2025 | 0 | |
| Jul 2025 | 0 | |
| Aug 2025 | 0 | |
| Sep 2025 | 0 | |
| Oct 2025 | 0 | |
| Nov 2025 | 0 | |
| Dec 2025 | 1 | |
| Jan 2026 | 0 | |
| Feb 2026 | 2 | |
| Mar 2026 | 1 | |
| Apr 2026 | 1 | |
| May 2026 | 0 | |
| Jun 2026 | 0 | |
| Jul 2026 | 0 | |
| Aug 2026 | 1 | |
| Sep 2026 | 0 | |
| Oct 2026 | 0 | |
| Nov 2026 | 0 |
Discharge events per year, 2016 to 2026
71 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 | 2 | 0 | 2 | Partly covered or sparse source |
| 2017 | 0 | 11 | 1 | 12 | |
| 2018 | 0 | 3 | 1 | 4 | |
| 2019 | 0 | 10 | 0 | 10 | |
| 2020 | 0 | 5 | 0 | 5 | |
| 2021 | 0 | 14 | 0 | 14 | Partly covered or sparse source |
| 2022 | 0 | 2 | 0 | 2 | |
| 2023 | 0 | 6 | 0 | 6 | |
| 2024 | 0 | 6 | 0 | 6 | |
| 2025 | 0 | 3 | 2 | 5 | |
| 2026 | 0 | 5 | 0 | 5 |
Reported volume per year
Gallons, summed from the 36 events that gave a number (35 did not).
- Partly covered or sparse source
35 of 71 events gave no volume as a number (29 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 | 2 | Partly covered or sparse source |
| 2017 | 650 | 6 | 6 | |
| 2018 | 300 | 1 | 3 | |
| 2019 | 5,505 | 3 | 7 | |
| 2020 | 0 | 0 | 5 | |
| 2021 | 256,475 | 7 | 7 | Partly covered or sparse source |
| 2022 | 0 | 0 | 2 | |
| 2023 | 69,250 | 6 | 0 | |
| 2024 | 198,675 | 6 | 0 | |
| 2025 | 11,000,600 | 3 | 2 | |
| 2026 | 2,350 | 4 | 1 |
Hours under advisory per year
Hours under advisory each year; 2026 to date.
- Advisory in effect
- Partly covered or sparse source
6 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 | 98 | 1.1% | Partly covered or sparse source |
| 2017 | 382 | 4.4% | |
| 2018 | 220 | 2.5% | |
| 2019 | 451 | 5.1% | |
| 2020 | 250 | 2.8% | |
| 2021 | 249 | 2.8% | Partly covered or sparse source |
| 2022 | 99 | 1.1% | |
| 2023 | 313 | 3.6% | |
| 2024 | 316 | 3.6% | |
| 2025 | 188 | 2.1% | |
| 2026 | 51 | 0.7% |
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 | 6 | 10 |
| Feb | 6 | 10 |
| Mar | 9 | 10 |
| Apr | 4 | 10 |
| May | 3 | 10 |
| Jun | 4 | 10 |
| Jul | 2 | 11 |
| Aug | 6 | 11 |
| Sep | 9 | 11 |
| Oct | 5 | 11 |
| Nov | 6 | 11 |
| Dec | 11 | 10 |
Discharge events by outfall
The 10 outfalls with the most events of 55, 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 |
|---|---|---|
| Manhole, 261-267 Cross St | Naugatuck WPCF | 6 |
| Basement, 99 Cold Spring Circle | Naugatuck WPCF | 3 |
| Basement, 118 Ward St, Naugatuck, CT | NAUGATUCK WPCF | 2 |
| Manhole, 174 Prospect St | Naugatuck WPCF | 2 |
| Pump Station, 500 Cherry St ext | Naugatuck WPCF | 2 |
| Manhole, 641 Maplewood Hill Rd | Naugatuck WPCF | 2 |
| Basement, 22 Alma street | Naugatuck WPCF | 2 |
| Manhole, 716 Osborne rd naugatuck ct 06770 | Naugatuck WPCF | 2 |
| Manhole, 180 high street naugatuck ct 06770 | Naugatuck WPCF | 2 |
| Manhole, 24 Cherry St | Naugatuck WPCF | 2 |
| Other outfalls (45) | 46 |
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