DirtyWaterWatch

Connecticut / Dischargers /

City of Middletown WPCF

SSO · Connecticut · Middletown

NPDES permit
CT0100323
Outfalls
none with coordinates yet
Receiving waters
Connecticut River
Tracked waters
Connecticut River, CT
Events tracked
41 discharges · latest Oct 4, 2021, 10:00 AM EDT
Volume reported
776,142,530 gallons across the 16 discharges that give a volume (25 without one)

Source: discharger record from the project's research and EPA ECHO (dischargers.json); counts from the 41 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

Events reported for City of Middletown WPCF, newest first
StartEnd Water OutfallTypeVolumeSourceLinks
Oct 4, 2021, 10:00 AM EDT Oct 4, 2021, 12:00 PM EDT Connecticut River, CT Sewer Main, Pameecha ave Sanitary sewer overflow 150 gal Middletown WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x232b953ef85f, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Oct 4, 2021, 10:00 AM EDT Oct 4, 2021, 12:00 PM EDT Connecticut River, CT Sewer Main, Pameecha ave Sanitary sewer overflow “Undetermined” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965013, reported Oct 4, 2021, 3:08 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Sep 3, 2021, 6:01 AM EDT Sep 3, 2021, 6:02 AM EDT not placed Manhole, intersection of Newfield st and Rose circle. Sanitary sewer overflow 60 gal Middletown WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x295d6a8cade7, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Sep 3, 2021, 6:01 AM EDT Sep 3, 2021, 6:02 AM EDT not placed Manhole, intersection of Newfield st and Rose circle. Sanitary sewer overflow “51 - 500 gallons” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964590, reported Sep 3, 2021, 2:07 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Sep 2, 2021, 1:13 AM EDT Sep 2, 2021, 3:30 AM EDT Connecticut River, CT Manhole, 100 River Rd. Sanitary sewer overflow 150 gal Middletown WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x1dc37b99193a, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Sep 2, 2021, 1:13 AM EDT Sep 2, 2021, 3:30 AM EDT Connecticut River, CT Manhole, 100 River Rd. Sanitary sewer overflow “Undetermined” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963893, reported Sep 2, 2021, 3:20 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jul 9, 2021, 10:45 AM EDT Jul 9, 2021, 12:50 PM EDT Connecticut River, CT Manhole, Info 100 River rd Sanitary sewer overflow 1,000 gal Middletown WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xf00422b21635, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jul 9, 2021, 10:45 AM EDT Jul 9, 2021, 12:50 PM EDT Connecticut River, CT Manhole, Info 100 River rd Sanitary sewer overflow “Undetermined” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963833, reported Jul 9, 2021, 2:32 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jul 9, 2021, 10:30 AM EDT Jul 9, 2021, 12:45 PM EDT Connecticut River, CT Manhole, Info 34 East Main st Sanitary sewer overflow 1,000 gal Middletown WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xf38f0f68366e, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jul 9, 2021, 10:30 AM EDT Jul 9, 2021, 12:45 PM EDT Connecticut River, CT Manhole, Info 34 East Main st Sanitary sewer overflow “undetermined” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963834, reported Jul 9, 2021, 2:20 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jul 9, 2021, 9:00 AM EDT Jul 9, 2021, 2:15 AM EDT not placed Basement, 377 Ridge Rd. middletown ct 06457 Sanitary sewer overflow 30 gal Middletown WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x301516b68825, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jul 9, 2021, 9:00 AM EDT Jul 9, 2021, 2:15 AM EDT not placed Basement, 377 Ridge Rd. middletown ct 06457 Sanitary sewer overflow “1 - 50” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965313, reported Jul 13, 2021, 10:15 AM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jun 1, 2021, 2:00 PM EDT Jun 1, 2021, 3:00 PM EDT not placed Sewer Main, behind 17 Blue grass dr. Sanitary sewer overflow 50 gal Middletown WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xaabd36ff7c07, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jun 1, 2021, 2:00 PM EDT Jun 1, 2021, 3:00 PM EDT “Rick Miano” (not placed) Sewer Main, behind 17 Blue grass dr. Sanitary sewer overflow “51 - 500 gallons” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965315, reported Jun 2, 2021, 7:33 AM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

May 11, 2021, 2:23 PM EDT May 11, 2021, 4:30 PM EDT not placed Manhole, 207 Westfield st Sanitary sewer overflow 30 gal Middletown WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x28a2075acf41, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

May 11, 2021, 2:23 PM EDT May 11, 2021, 4:30 PM EDT not placed Manhole, 207 Westfield st Sanitary sewer overflow “1-50” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965104, reported May 12, 2021, 11:31 AM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Mar 28, 2021, 5:45 PM EDT Mar 28, 2021, 3:46 PM EDT not placed Sewer Main, 216 East Ridge Sanitary sewer overflow 60 gal Middletown WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record xd10646090e1f, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Mar 28, 2021, 5:45 PM EDT Mar 28, 2021, 3:46 PM EDT not placed Sewer Main, 216 East Ridge Sanitary sewer overflow “51 - 500 gallons” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35965236, reported Mar 28, 2021, 5:54 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jan 30, 2021, 11:54 AM EST Jan 30, 2021, 12:56 PM EST not placed Sewer Main, 42 Columbus ave Middletown Ct Sanitary sewer overflow 0 gal Middletown WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via ct-deep-annual, record x86ece508ab99, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 11:53 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jan 30, 2021, 11:54 AM EST Jan 30, 2021, 12:56 PM EST not placed Sewer Main, 42 Columbus ave Middletown Ct Sanitary sewer overflow 0 gal Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964842, reported Jan 30, 2021, 1:02 PM EST, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Sep 5, 2020, 10:37 AM EDT Sep 5, 2020, 11:39 AM EDT Connecticut River, CT Basement, 189-196 Newfeild st Sanitary sewer overflow 0 gal Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964378, reported Sep 5, 2020, 12:44 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Sep 5, 2020, 10:24 AM EDT Sep 5, 2020, 11:26 AM EDT not placed Basement, 189 --- 195 Newfield St Sanitary sewer overflow 0 gal Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964361, reported Sep 5, 2020, 12:33 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jul 3, 2020, 11:05 PM EDT Jul 3, 2020, 4:14 PM EDT not placed Manhole, Ifo 574 Butternut Hollow Sanitary sewer overflow “51 - 500 gallons” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964854, reported Jul 3, 2020, 4:19 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jun 18, 2020, 12:00 PM EDT Jun 18, 2020, 11:00 AM EDT Connecticut River, CT Pump Station, silver st Sanitary sewer overflow “501 - 1,000 gallons” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963075, reported Jun 18, 2020, 12:15 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Dec 20, 2019, 7:30 AM EST Dec 20, 2019, 8:10 AM EST not placed Basement, camp st Sanitary sewer overflow “less than 1 gallon” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964845, reported Dec 20, 2019, 8:19 AM EST, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Dec 5, 2019, 1:27 PM EST Dec 5, 2019, 1:50 PM EST not placed Basement, 151 Spencer Drive Sanitary sewer overflow “1 -10” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964841, reported Dec 5, 2019, 3:37 PM EST, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Oct 22, 2019, 11:45 AM EDT Oct 22, 2019, 12:15 PM EDT not placed Manhole, Jackson st Sanitary sewer overflow “51 - 500 gallons” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964656, reported Oct 22, 2019, 2:27 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jun 26, 2019, 9:30 AM EDT Jun 26, 2019, 11:40 AM EDT not placed Sewer Main, 232 Barbara rd Sanitary sewer overflow 0 gal Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964871, reported Jun 26, 2019, 1:35 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jun 10, 2019, 2:58 PM EDT not reported not placed Manhole, Westfeild st and Old mill rd Sanitary sewer overflow “Unknown amount” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964812, reported Jun 10, 2019, 3:03 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jun 1, 2019, 11:50 PM EDT Jun 1, 2019, 12:40 PM EDT not placed Pump Station, 88 Millbrook rd Sanitary sewer overflow “1,001 - 5,000 gallons” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964177, reported Jun 1, 2019, 2:09 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Mar 15, 2019, 11:45 PM EDT Mar 15, 2019, 12:20 PM EDT Connecticut River, CT Basement, 141 coe ave Sanitary sewer overflow “51 - 500 gallons” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964432, reported Mar 15, 2019, 1:31 PM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jan 25, 2019, 2:23 AM EST Jan 24, 2019, 1:24 PM EST Connecticut River, CT Treatment Plant, 100 River Road Treatment plant bypass “Undetermined” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963194, reported Jan 24, 2019, 2:33 PM EST, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jan 24, 2019, 1:34 PM EST Jan 24, 2019, 4:45 PM EST Connecticut River, CT Treatment Plant, 100 River Road Treatment plant bypass 140,000 gal Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963938, reported Jan 24, 2019, 5:09 PM EST, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jan 24, 2019, 1:34 PM EST not reported Connecticut River, CT Treatment Plant, 100 River Road Treatment plant bypass “Undetermined” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963541, reported Jan 24, 2019, 1:49 PM EST, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jan 24, 2019, 1:00 PM EST not reported Connecticut River, CT Treatment Plant, !00 River Road Treatment plant bypass “Undetermined” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963191, reported Jan 24, 2019, 2:16 PM EST, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Dec 26, 2018, 3:20 PM EST Dec 26, 2018, 1:22 PM EST not placed Lateral - Private, Main st Sanitary sewer overflow “51 - 500 gallons” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964433, reported Dec 26, 2018, 3:26 PM EST, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Nov 26, 2018, 12:40 PM EST Nov 26, 2018, 1:55 PM EST not placed Manhole, 577 Butternut st Sanitary sewer overflow “51 - 500 gallons” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964853, reported Nov 26, 2018, 2:48 PM EST, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Oct 5, 2018, 9:30 AM EDT Oct 5, 2018, 9:40 AM EDT not placed Treatment Plant, 100 River Road Treatment plant bypass “<500” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964028, reported Oct 5, 2018, 10:54 AM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Sep 25, 2018, 7:00 PM EDT Sep 25, 2018, 10:15 PM EDT Connecticut River, CT Treatment Plant, 100 River Road Treatment plant bypass 776 million gal Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35963544, reported Sep 26, 2018, 10:23 AM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jul 31, 2018, 2:30 PM EDT Jul 31, 2018, 3:45 PM EDT “Ct River” (not placed) Treatment Plant, 100 River Road Treatment plant bypass “<500” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964120, reported Aug 1, 2018, 10:46 AM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jul 31, 2018, 2:30 PM EDT Jul 31, 2018, 3:45 PM EDT “Ct River” (not placed) Treatment Plant, 100 River Road Treatment plant bypass “<500” Middletown WPCF (CT DEEP reporting archive 2016-2021) via ct-deep-archive, record bypass-35964119, reported Aug 1, 2018, 10:46 AM EDT, retrieved 2026-11-02 11:54 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

History

  • Discharge events, last 12 months0Dec 2025 to Nov 2026
  • Days with a discharge, last 12 months0Dec 2025 to Nov 2026
  • Hours under advisory, last 12 months0Dec 2025 to Nov 2026; on this discharger's reports
  • 2026 season under advisory0.0%May to October; 0 h

Discharge events per month

0 events, Jan 2022 to Nov 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Bypass, blended or other

Sources: CT DEEP Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2022-01-01 to 2026-11-02.

Show table
Discharge events per month
MonthCombined sewer overflowSanitary sewer overflowBypass, blended or otherTotalCounted fromCoverage
Jan 20220000
Feb 20220000
Mar 20220000
Apr 20220000
May 20220000
Jun 20220000
Jul 20220000
Aug 20220000
Sep 20220000
Oct 20220000
Nov 20220000
Dec 20220000
Jan 20230000
Feb 20230000
Mar 20230000
Apr 20230000
May 20230000
Jun 20230000
Jul 20230000
Aug 20230000
Sep 20230000
Oct 20230000
Nov 20230000
Dec 20230000
Jan 20240000
Feb 20240000
Mar 20240000
Apr 20240000
May 20240000
Jun 20240000
Jul 20240000
Aug 20240000
Sep 20240000
Oct 20240000
Nov 20240000
Dec 20240000
Jan 20250000
Feb 20250000
Mar 20250000
Apr 20250000
May 20250000
Jun 20250000
Jul 20250000
Aug 20250000
Sep 20250000
Oct 20250000
Nov 20250000
Dec 20250000
Jan 20260000
Feb 20260000
Mar 20260000
Apr 20260000
May 20260000
Jun 20260000
Jul 20260000
Aug 20260000
Sep 20260000
Oct 20260000
Nov 20260000

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

13 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 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 Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.

Show table
Hours under advisory per month
MonthHours under advisoryFrom discharge windowsHours in monthCoverage
Jan 202200744
Feb 202200672
Mar 202200744
Apr 202200720
May 202200744
Jun 202200720
Jul 202200744
Aug 202200744
Sep 202200720
Oct 202200744
Nov 202200720
Dec 202200744
Jan 202300744
Feb 202300672
Mar 202300744
Apr 202300720
May 202300744
Jun 202300720
Jul 202300744
Aug 202300744
Sep 202300720
Oct 202300744
Nov 202300720
Dec 202300744
Jan 202400744
Feb 202400696
Mar 202400744
Apr 202400720
May 202400744
Jun 202400720
Jul 202400744
Aug 202400744
Sep 202400720
Oct 202400744
Nov 202400720
Dec 202400744
Jan 202500744
Feb 202500672
Mar 202500744
Apr 202500720
May 202500744
Jun 202500720
Jul 202500744
Aug 202500744
Sep 202500720
Oct 202500744
Nov 202500720
Dec 202500744
Jan 202600744
Feb 202600672
Mar 202600744
Apr 202600720
May 202600744
Jun 202600720
Jul 202600744
Aug 202600744
Sep 202600720
Oct 202600744
Nov 20260032

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 Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2022-01-01 to 2026-11-02.

Show table
Days with a discharge per month
MonthDays with a dischargeCoverage
Jan 20220
Feb 20220
Mar 20220
Apr 20220
May 20220
Jun 20220
Jul 20220
Aug 20220
Sep 20220
Oct 20220
Nov 20220
Dec 20220
Jan 20230
Feb 20230
Mar 20230
Apr 20230
May 20230
Jun 20230
Jul 20230
Aug 20230
Sep 20230
Oct 20230
Nov 20230
Dec 20230
Jan 20240
Feb 20240
Mar 20240
Apr 20240
May 20240
Jun 20240
Jul 20240
Aug 20240
Sep 20240
Oct 20240
Nov 20240
Dec 20240
Jan 20250
Feb 20250
Mar 20250
Apr 20250
May 20250
Jun 20250
Jul 20250
Aug 20250
Sep 20250
Oct 20250
Nov 20250
Dec 20250
Jan 20260
Feb 20260
Mar 20260
Apr 20260
May 20260
Jun 20260
Jul 20260
Aug 20260
Sep 20260
Oct 20260
Nov 20260

Discharge events per year, 2016 to 2026

41 events, 2016 to 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Bypass, blended or other
  • Partly covered or sparse source

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 Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.

Show table
Discharge events per year, 2016 to 2026
YearCombined sewer overflowSanitary sewer overflowBypass, blended or otherTotalCoverage
20160000Partly covered or sparse source
20170000
20180246
201907411
20200404
2021020020Partly covered or sparse source
20220000
20230000
20240000
20250000
20260000

Reported volume per year

Gallons, summed from the 16 events that gave a number (25 did not).

  • Partly covered or sparse source

25 of 41 events gave no volume as a number (14 gave a range); only numbers are summed. CT DEEP's 2016-2021 archive gives volumes as ranges ("20,001 - 50,000 gallons"); they are not summed.

Sources: CT DEEP Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.

Show table
Reported volume per year
YearGallonsEvents with a numberEvents withoutCoverage
2016000Partly covered or sparse source
2017000
2018776,000,00015
2019140,00029
2020022
20212,530119Partly covered or sparse source
2022000
2023000
2024000
2025000
2026000

Hours under advisory per year

Hours under advisory each year; 2026 to date.

  • Advisory in effect
  • Partly covered or sparse source

13 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 Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.

Show table
Hours under advisory per year
YearHours under advisoryShare of the yearCoverage
201600.0%Partly covered or sparse source
201700.0%
20181982.3%
20192472.8%
2020490.6%
20213253.7%Partly covered or sparse source
202200.0%
202300.0%
202400.0%
202500.0%
202600.0%

Share of the May to October season under advisory

Share of the hours from May 1 to October 31 with an advisory in effect.

  • Advisory in effect
  • Season partly covered

Seasons only partly covered by a source: 2016 (share is of the covered hours). 13 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 Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.

Show table
Share of the May to October season under advisory
SeasonShare under advisoryHours under advisoryHours coveredSeason hoursPartly covered
20160.0%02,8764,416yes
20170.0%04,4164,416
20183.4%1494,4164,416
20192.2%994,4164,416
20201.1%494,4164,416
20216.3%2764,4164,416
20220.0%04,4164,416
20230.0%04,4164,416
20240.0%04,4164,416
20250.0%04,4164,416
20260.0%04,4164,416

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 Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.

Show table
Discharge events by calendar month, all years
MonthEventsYears of records
Jan610
Feb010
Mar310
Apr010
May210
Jun610
Jul911
Aug011
Sep711
Oct411
Nov111
Dec310

Discharge events by outfall

The 10 outfalls with the most events of 25, all years.

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 Sewage Right-to-Know annual reports; CT DEEP reporting archive 2016-2021. Covered 2016-07-04 to 2026-11-02.

Show table
Discharge events by outfall
OutfallEvents
Treatment Plant, 100 River Road7
Sewer Main, Pameecha ave2
Manhole, intersection of Newfield st and Rose circle.2
Manhole, 100 River Rd.2
Manhole, Info 100 River rd2
Manhole, Info 34 East Main st2
Basement, 377 Ridge Rd. middletown ct 064572
Sewer Main, behind 17 Blue grass dr.2
Manhole, 207 Westfield st2
Sewer Main, 216 East Ridge2
Other outfalls (15)16
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 Sewage Right-to-Know annual reports: 2021-01-01 to now
  • CT DEEP reporting archive 2016-2021: 2016-07-04 to 2021-12-02