DirtyWaterWatch

Connecticut / Waters /

Thames River

River in Connecticut · near Gales Ferry, Groton, Ledyard, Montville, New London

Status now

No current report

At least one source we follow covers this water, and nothing it reports applies right now.

Why this colour: No current report: nothing a covering source reports colours this water now. How long a water stays coloured, and why

Source: CT DEEP CSO/SSO Performance Dashboard (QScend), last answered 2026-11-02 11:53 UTC; ct-deep-annual, last answered 2026-11-02 11:54 UTC; ct-deep-archive, last answered 2026-11-02 11:54 UTC; ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), last answered 2026-11-02 11:54 UTC; ECHO NPDES Sewer Overflow and Bypass Event Dataset (eRule Phase 2, current versions), last answered 2026-11-02 11:54 UTC. Status computed by DirtyWaterWatch as of 2026-11-02 11:56 UTC.

It is not a finding about the water. Discharges go unreported, reports arrive late, and storm runoff carries bacteria too. Follow posted signs and local health advice.

Rivers are not coloured as a whole: a discharge colours a modeled stretch downstream of its outfall, listed below when there is one.

As of Nov 2, 2026, 6:56 AM EST.

Map

Source: water outlines from OpenBoatLaunch and OpenStreetMap contributors (ODbL); outfalls from EPA ECHO and the state outfall layers; modeled reaches computed by DirtyWaterWatch from USGS NLDI, NHDPlus and the nearest USGS gauge (Jobson 1996); basemap OpenFreeMap and OpenMapTiles.

Outfalls are small brown dots.

Modeled downstream reaches on Thames River

No discharge colours a modeled reach on this water now.

The last 90 days

Last 90 days, hour by hour. Red: advisory in effect; yellow: caution; hatched yellow: unresolved, no end reported; grey: no current report; hatched purple: a source was not updating.

No red or yellow period in this span.

Source: hourly statuses computed by DirtyWaterWatch (pipeline build/status.py) from the events linked above and the rules on the methods page; history as of 2026-11-02 11:56 UTC.

Discharges over the years

  • Discharge events, last 12 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
  • 2026 season under advisory0.0%May to October; 0 h

Discharge events per month

362 events, Jan 2022 to Nov 2026. Counted from 330 verified or annual reports, 32 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
Discharge events per month
MonthCombined sewer overflowSanitary sewer overflowBypass, blended or otherTotalCounted fromCoverage
Jan 20222002Verified or annual reports
Feb 2022101011Verified or annual reports
Mar 2022102012Verified or annual reports
Apr 20227007Verified or annual reports
May 20221001Verified or annual reports
Jun 2022120012Verified or annual reports
Jul 20222002Verified or annual reports
Aug 2022100010Verified or annual reports
Sep 2022131115Verified or annual reports
Oct 2022101011Verified or annual reports
Nov 20225005Verified or annual reports
Dec 20223003Verified or annual reports
Jan 2023110011Verified or annual reports
Feb 20231001Verified or annual reports
Mar 20235005Verified or annual reports
Apr 20237018Verified or annual reports
May 20235005Verified or annual reports
Jun 20235005Verified or annual reports
Jul 2023210021Verified or annual reports
Aug 2023161017Verified or annual reports
Sep 2023110011Verified or annual reports
Oct 20235005Verified or annual reports
Nov 20234105Verified or annual reports
Dec 2023105116Verified or annual reports
Jan 2024113317Verified or annual reports
Feb 20242013Verified or annual reports
Mar 2024181221Verified or annual reports
Apr 20248008Verified or annual reports
May 2024180018Verified or annual reports
Jun 2024140014Verified or annual reports
Jul 2024121013Verified or annual reports
Aug 2024120012Verified or annual reports
Sep 20245005Verified or annual reports
Oct 20244004Verified or annual reports
Nov 20244004Verified or annual reports
Dec 202491010Verified or annual reports
Jan 20250101Public notices (no report yet)
Feb 20253003Public notices (no report yet)
Mar 2025100010Public notices (no report yet)
Apr 20255106Public notices (no report yet)
May 20259009Public notices (no report yet)
Jun 20250000
Jul 20250000
Aug 20250202Public notices (no report yet)
Sep 20250000
Oct 20250101Public notices (no report yet)
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 water was under an advisory, by the map's red rules.

  • Advisory in effect

40 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. 1 events reported to last more than 31 days are counted to 31 days. 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
Hours under advisory per month
MonthHours under advisoryFrom discharge windowsHours in monthCoverage
Jan 20225353744
Feb 2022257257672
Mar 2022309309744
Apr 2022131131720
May 20224848744
Jun 2022225225720
Jul 20229797744
Aug 2022194194744
Sep 2022248248720
Oct 2022274274744
Nov 20225656720
Dec 20229292744
Jan 2023172172744
Feb 20234848672
Mar 2023105105744
Apr 2023190190720
May 2023142142744
Jun 2023139139720
Jul 2023416416744
Aug 2023307307744
Sep 2023310310720
Oct 2023227227744
Nov 2023159159720
Dec 2023359359744
Jan 2024399399744
Feb 2024240240696
Mar 2024407407744
Apr 2024166166720
May 2024267267744
Jun 2024219219720
Jul 2024316316744
Aug 2024244244744
Sep 20249898720
Oct 20246464744
Nov 2024123123720
Dec 2024236236744
Jan 20258080744
Feb 20255858672
Mar 2025212212744
Apr 2025327327720
May 2025197197744
Jun 202500720
Jul 202500744
Aug 2025105105744
Sep 202500720
Oct 20254848744
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 CSO/SSO dashboard; CT DEEP Sewage Right-to-Know annual reports. Covered 2022-01-01 to 2026-11-02.

Show table
Days with a discharge per month
MonthDays with a dischargeCoverage
Jan 20221
Feb 20226
Mar 20228
Apr 20223
May 20221
Jun 20225
Jul 20222
Aug 20224
Sep 20227
Oct 20226
Nov 20222
Dec 20222
Jan 20237
Feb 20231
Mar 20233
Apr 20237
May 20232
Jun 20233
Jul 202310
Aug 20237
Sep 20239
Oct 20236
Nov 20235
Dec 202311
Jan 202415
Feb 20249
Mar 202411
Apr 20244
May 20247
Jun 20247
Jul 20247
Aug 20246
Sep 20242
Oct 20241
Nov 20243
Dec 20246
Jan 20252
Feb 20251
Mar 20256
Apr 20257
May 20255
Jun 20250
Jul 20250
Aug 20253
Sep 20250
Oct 20251
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

876 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
Discharge events per year, 2016 to 2026
YearCombined sewer overflowSanitary sewer overflowBypass, blended or otherTotalCoverage
20160202Partly covered or sparse source
2017269136
201810121104
20196910079
20208113094
2021183133199Partly covered or sparse source
2022855191
202310172110
202411766129
2025275032
20260000

Reported volume per year

Gallons, summed from the 451 events that gave a number (425 did not).

  • Partly covered or sparse source

425 of 876 events gave no volume as a number (393 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
Reported volume per year
YearGallonsEvents with a numberEvents withoutCoverage
2016002Partly covered or sparse source
2017274,000432
201800104
201963,989772
2020110,787688
20213,192,25574125Partly covered or sparse source
20221,440,140892
202311,686,6811100
202423,378,7531290
2025471,604320
2026000

Hours under advisory per year

Hours under advisory each year; 2026 to date.

  • Advisory in effect
  • Partly covered or sparse source

40 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. 1 events reported to last more than 31 days are counted to 31 days.

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
Hours under advisory per year
YearHours under advisoryShare of the yearCoverage
20161001.1%Partly covered or sparse source
20174625.3%
20182,19525.1%
20192,53228.9%
20202,67730.5%
20212,53128.9%Partly covered or sparse source
20221,98322.6%
20232,57229.4%
20242,77731.6%
20251,02611.7%
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). 40 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. 1 events reported to last more than 31 days are counted to 31 days.

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
Share of the May to October season under advisory
SeasonShare under advisoryHours under advisoryHours coveredSeason hoursPartly covered
20161.8%512,8764,416yes
20175.4%2384,4164,416
201826.1%1,1544,4164,416
201921.9%9674,4164,416
202023.2%1,0234,4164,416
202139.5%1,7444,4164,416
202224.6%1,0854,4164,416
202334.9%1,5404,4164,416
202427.3%1,2074,4164,416
20257.9%3504,4164,416
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 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
Discharge events by calendar month, all years
MonthEventsYears of records
Jan6110
Feb3910
Mar7310
Apr6510
May7010
Jun8410
Jul10411
Aug8511
Sep8411
Oct9511
Nov5711
Dec5910

Discharge events by outfall

The 10 outfalls with the most events of 69, 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
Discharge events by outfall
OutfallDischargerEvents
004Norwich Public Utilities299
031Norwich Public Utilities161
032Norwich Public Utilities153
005Norwich Public Utilities80
4City of Norwich34
31City of Norwich22
32City of Norwich19
5City of Norwich10
040City of Norwich7
Manhole, S. Thames St.Norwich WPCF5
Other outfalls (59)86
How these charts are counted

Discharge events are counted once: where a source publishes both public notices and verified reports (MassDEP, Vermont DEC), a discharger's month with any verified report counts its verified reports only, and other months count notices. Revisions are folded into the record they revise, and EPA copies of a state report are not counted twice. Monthly and yearly totals (Maine DEP, EPA discharge monitoring reports, Portsmouth) are shown on their own and never added to the event counts. Hours under advisory follow the map's red rules. A muted band marks periods no source covers: a gap there is missing data, not a quiet month.

  • CT DEEP CSO/SSO dashboard: 2021-12-02 to now
  • CT DEEP Sewage Right-to-Know annual reports: 2021-01-01 to now
  • CT DEEP reporting archive 2016-2021: 2016-07-04 to 2021-12-02
  • EPA ECHO sewer overflow events: 2022-05-03 to now (sparse)

Every event on Thames River

Events placed on Thames River, newest first
StartEnd Discharger OutfallTypeVolumeSourceLinks
Dec 29, 2025, 1:00 PM EST Dec 29, 2025, 1:30 PM EST Norwich Public Utilities 004 Combined sewer overflowrevised 2,258 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10233, 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)

This record in the archive list
Dec 19, 2025, 1:15 PM EST Dec 19, 2025, 1:30 PM EST Norwich Public Utilities 005 Combined sewer overflowrevised 3,066 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10207, 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)

This record in the archive list
Dec 19, 2025, 1:00 PM EST Dec 19, 2025, 1:15 PM EST Norwich Public Utilities 031 Combined sewer overflowrevised 1,829 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10209, 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)

This record in the archive list
Dec 19, 2025, 1:00 PM EST Dec 19, 2025, 1:15 PM EST Norwich Public Utilities 032 Combined sewer overflowrevised 9,800 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10201, 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)

This record in the archive list
Dec 19, 2025, 10:00 AM EST Dec 19, 2025, 1:00 PM EST Norwich Public Utilities 004 Combined sewer overflowrevised 7,455 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10202, 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)

This record in the archive list
Dec 19, 2025, 10:00 AM EST Dec 19, 2025, 1:30 PM EST Norwich Public Utilities 004 Combined sewer overflowrevised 7,455 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10199, 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)

This record in the archive list
Dec 2, 2025, 4:00 PM EST Dec 2, 2025, 5:30 PM EST Norwich Public Utilities 004 Combined sewer overflowrevised 1,923 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10168, 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)

This record in the archive list
Nov 26, 2025, 1:00 AM EST Nov 26, 2025, 1:30 AM EST Norwich Public Utilities 004 Combined sewer overflowrevised 920 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10148, 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)

This record in the archive list
Nov 15, 2025, 9:30 PM EST Nov 15, 2025, 11:30 PM EST Norwich Public Utilities 004 Combined sewer overflowrevised 1,700 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10122, 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)

This record in the archive list
Nov 10, 2025, 12:45 PM EST Nov 10, 2025, 1:00 PM EST Norwich Public Utilities 004 Combined sewer overflowrevised 25 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10120, 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)

This record in the archive list
Oct 30, 2025, 8:30 PM EDT Oct 30, 2025, 9:45 AM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 520 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10081, 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)

This record in the archive list
Oct 30, 2025, 5:15 PM EDT Oct 30, 2025, 5:30 PM EDT Norwich Public Utilities 005 Combined sewer overflowrevised 57,848 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10075, 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)

This record in the archive list
Oct 20, 2025, 7:30 AM EDT Oct 20, 2025, 7:45 AM EDT Norwich Public Utilities 032 Combined sewer overflowrevised 7,376 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10038, 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)

This record in the archive list
Oct 20, 2025, 6:15 AM EDT Oct 20, 2025, 7:45 AM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 3,462 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10033, 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)

This record in the archive list
Oct 20, 2025, 5:15 AM EDT Oct 20, 2025, 8:45 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 16,426 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10028, 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)

This record in the archive list
Oct 13, 2025, 12:45 AM EDT Oct 13, 2025, 1:00 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 213 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 10009, 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)

This record in the archive list
Oct 9, 2025, 5:00 PM EDT Oct 9, 2025, 5:00 PM EDT US NAVAL SUB BASE (DEPT OF NAVY) Lateral - Private, Groton, CT Sanitary sewer overflowrevised 30 gal US NAVAL SUB BASE (DEPT OF NAVY) (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9995-2, 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)

This record in the archive list
Oct 9, 2025, 5:00 PM EDT Oct 9, 2025, 5:00 PM EDT US NAVAL SUB BASE (DEPT OF NAVY) Lateral - Private, Groton, CT Sanitary sewer overflowrevised 30 gal US NAVAL SUB BASE (DEPT OF NAVY) (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9995, 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)

This record in the archive list
Oct 9, 2025, 5:00 PM EDT Oct 9, 2025, 5:00 PM EDT US NAVAL SUB BASE (DEPT OF NAVY) Lateral - Private, Groton, CT Sanitary sewer overflow 30 gal US NAVAL SUB BASE (DEPT OF NAVY) (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9995, 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)

This record in the archive list
Oct 8, 2025, 8:00 AM EDT Oct 8, 2025, 8:30 AM EDT Norwich Public Utilities 005 Combined sewer overflowrevised 773 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9986, 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)

This record in the archive list
Oct 8, 2025, 8:00 AM EDT Oct 8, 2025, 8:15 AM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 2,422 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9985, 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)

This record in the archive list
Oct 8, 2025, 7:00 AM EDT Oct 8, 2025, 8:45 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 5,250 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9977, 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)

This record in the archive list
Sep 25, 2025, 5:30 AM EDT Sep 25, 2025, 5:30 AM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 958 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9956, 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)

This record in the archive list
Sep 25, 2025, 4:45 AM EDT Sep 25, 2025, 7:15 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 3,496 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9949, 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)

This record in the archive list
Sep 24, 2025, 5:00 AM EDT Sep 24, 2025, 5:15 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 140 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9937, 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)

This record in the archive list
Sep 6, 2025, 5:00 PM EDT Sep 7, 2025, 8:45 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 3,273 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9877, 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)

This record in the archive list
Aug 29, 2025, 11:45 AM EDT Aug 29, 2025, 3:30 PM EDT Norwich Public Utilities Sewer Main, 190 S Thames St, Norwich, CT Sanitary sewer overflowrevised 50,000 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9853-2, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Aug 29, 2025, 11:45 AM EDT Aug 29, 2025, 3:30 PM EDT Norwich Public Utilities Sewer Main, 190 S Thames St, Norwich, CT Sanitary sewer overflowrevised 50,000 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9853, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Aug 29, 2025, 11:45 AM EDT Aug 29, 2025, 3:30 PM EDT Norwich Public Utilities Sewer Main, 190 S Thames St, Norwich, CT Sanitary sewer overflow 50,000 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9853, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Aug 29, 2025, 7:30 AM EDT Aug 29, 2025, 2:45 PM EDT Norwich Public Utilities 032 Combined sewer overflowrevised 38,059 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9843, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Aug 29, 2025, 7:15 AM EDT Aug 29, 2025, 3:00 PM EDT Norwich Public Utilities 044 Combined sewer overflowrevised 18,236 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9842, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Aug 20, 2025, 9:00 PM EDT Aug 27, 2025, 9:45 PM EDT Norwich Public Utilities 032 Combined sewer overflowrevised 24,562 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9829, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Aug 20, 2025, 9:00 PM EDT Aug 21, 2025, 9:45 PM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 11,031 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9828, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Aug 20, 2025, 4:45 PM EDT Aug 20, 2025, 10:45 PM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 29,979 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9809, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Aug 7, 2025, 7:30 PM EDT Aug 8, 2025, 11:59 PM EDT US NAVAL SUB BASE (DEPT OF NAVY) Sewer Main, Military Hwy, Groton, CT Sanitary sewer overflowrevised 5 gal US NAVAL SUB BASE (DEPT OF NAVY) (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9786-2, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Aug 7, 2025, 7:30 PM EDT not reported US NAVAL SUB BASE (DEPT OF NAVY) Sewer Main, Military Hwy, Groton, CT Sanitary sewer overflowrevised “5-10 gallons, initial release. Unknown amount through small leak (secured).” US NAVAL SUB BASE (DEPT OF NAVY) (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9786, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Aug 7, 2025, 7:30 PM EDT Aug 8, 2025, 1:00 AM EDT US NAVAL SUB BASE (DEPT OF NAVY) Sewer Main, Military Hwy, Groton, CT Sanitary sewer overflow 5 gal US NAVAL SUB BASE (DEPT OF NAVY) (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9786, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Jul 20, 2025, 6:15 PM EDT Jul 20, 2025, 6:30 PM EDT Norwich Public Utilities 032 Combined sewer overflowrevised 129 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9745, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Jul 20, 2025, 6:15 PM EDT Jul 20, 2025, 7:15 PM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 7,021 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9732, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Jul 20, 2025, 6:15 PM EDT Jul 20, 2025, 6:45 PM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 1,584 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9727, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Jul 9, 2025, 7:30 PM EDT Jul 9, 2025, 8:00 PM EDT Norwich Public Utilities 005 Combined sewer overflowrevised 9,374 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9701, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Jul 9, 2025, 7:30 PM EDT Jul 10, 2025, 3:15 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 15,120 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9700, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Jul 9, 2025, 7:30 PM EDT Jul 9, 2025, 7:45 PM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 1,151 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9698, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Jul 9, 2025, 7:30 PM EDT Jul 9, 2025, 7:45 PM EDT Norwich Public Utilities 032 Combined sewer overflowrevised 8,865 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9697, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Jul 3, 2025, 6:15 PM EDT Jul 3, 2025, 6:30 PM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 174 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9690, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 31, 2025, 3:00 AM EDT May 31, 2025, 3:15 AM EDT Norwich Public Utilities 032 Combined sewer overflowrevised 3,726 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9619, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 31, 2025, 3:00 AM EDT May 31, 2025, 3:15 AM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 2,291 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9618, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 31, 2025, 3:00 AM EDT May 31, 2025, 3:30 AM EDT Norwich Public Utilities 005 Combined sewer overflowrevised 5,818 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9610, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 22, 2025, 1:00 PM EDT May 22, 2025, 1:30 PM EDT Norwich Public Utilities 005 Combined sewer overflowrevised 2,749 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9581, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 22, 2025, 8:15 AM EDT May 22, 2025, 4:15 PM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 12,775 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9582, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 15, 2025, 12:30 AM EDT May 15, 2025, 2:45 AM EDT Norwich Public Utilities 032 Combined sewer overflowrevised 46,259 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9553, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 15, 2025, 12:30 AM EDT May 15, 2025, 2:45 AM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 12,635 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9552, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 15, 2025, 12:30 AM EDT May 15, 2025, 2:45 AM EDT Norwich Public Utilities 005 Combined sewer overflowrevised 5,546 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9544, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 15, 2025, 12:30 AM EDT May 15, 2025, 12:00 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 13,021 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9543, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 15, 2025, 12:30 AM EDT May 15, 2025, 2:45 AM EDT Norwich Public Utilities 032 Combined sewer overflow 46,259 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9553, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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May 15, 2025, 12:30 AM EDT May 15, 2025, 2:45 AM EDT Norwich Public Utilities 031 Combined sewer overflow 12,635 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9552, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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May 15, 2025, 12:30 AM EDT May 15, 2025, 2:45 AM EDT Norwich Public Utilities 005 Combined sewer overflow 5,546 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9544, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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May 15, 2025, 12:30 AM EDT May 15, 2025, 12:00 AM EDT Norwich Public Utilities 004 Combined sewer overflow 13,021 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9543, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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May 9, 2025, 11:00 AM EDT May 10, 2025, 12:30 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 12,560 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9500, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 9, 2025, 11:00 AM EDT May 10, 2025, 12:30 AM EDT Norwich Public Utilities 004 Combined sewer overflow 12,560 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9500, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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May 6, 2025, 2:00 PM EDT May 6, 2025, 2:15 PM EDT Norwich Public Utilities 005 Combined sewer overflowrevised 9,799 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9468, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 6, 2025, 2:00 PM EDT May 6, 2025, 2:15 PM EDT Norwich Public Utilities 005 Combined sewer overflow 9,799 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9468, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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May 5, 2025, 11:45 PM EDT May 6, 2025, 2:15 PM EDT Norwich Public Utilities 032 Combined sewer overflowrevised 12,920 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9467, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 5, 2025, 11:45 PM EDT May 6, 2025, 2:15 PM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 3,506 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9466, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 5, 2025, 11:45 PM EDT May 6, 2025, 2:15 PM EDT Norwich Public Utilities 032 Combined sewer overflow 12,920 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9467, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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May 5, 2025, 11:45 PM EDT May 6, 2025, 2:15 PM EDT Norwich Public Utilities 031 Combined sewer overflow 3,506 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9466, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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May 5, 2025, 1:15 AM EDT May 6, 2025, 2:15 PM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 18,875 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9441, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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May 5, 2025, 1:15 AM EDT May 6, 2025, 2:15 PM EDT Norwich Public Utilities 004 Combined sewer overflow 18,875 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9441, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Apr 26, 2025, 9:30 AM EDT Apr 26, 2025, 8:45 PM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 442 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9425, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Apr 26, 2025, 9:30 AM EDT Apr 26, 2025, 8:45 PM EDT Norwich Public Utilities 004 Combined sewer overflow 442 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9425, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Apr 15, 2025, 4:15 AM EDT Apr 15, 2025, 4:30 PM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 677 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9385, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Apr 15, 2025, 4:15 AM EDT Apr 15, 2025, 4:30 PM EDT Norwich Public Utilities 004 Combined sewer overflow 677 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9385, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Apr 13, 2025, 1:15 AM EDT Apr 13, 2025, 3:15 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 3,353 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9371, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Apr 13, 2025, 1:15 AM EDT Apr 13, 2025, 3:15 AM EDT Norwich Public Utilities 004 Combined sewer overflow 3,353 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9371, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Apr 5, 2025, 5:45 PM EDT Apr 5, 2025, 6:45 PM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 406 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9340, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Apr 5, 2025, 5:45 PM EDT Apr 5, 2025, 6:45 PM EDT Norwich Public Utilities 004 Combined sewer overflow 406 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9340, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Apr 3, 2025, 9:15 AM EDT Apr 3, 2025, 9:45 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 716 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9333, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Apr 3, 2025, 9:15 AM EDT Apr 3, 2025, 9:45 AM EDT Norwich Public Utilities 004 Combined sewer overflow 716 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9333, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Apr 1, 2025, 6:00 PM EDT Apr 3, 2025, 12:15 PM EDT Norwich Public Utilities Sewer Main, 22 Thames Terrace, Norwich, CT Sanitary sewer overflowrevised 4,600 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9328-2, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Apr 1, 2025, 6:00 PM EDT Apr 3, 2025, 12:15 PM EDT Norwich Public Utilities Sewer Main, 22 Thames Terrace, Norwich, CT Sanitary sewer overflowrevised 4,600 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9328, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Apr 1, 2025, 6:00 PM EDT Apr 3, 2025, 12:15 PM EDT Norwich Public Utilities Sewer Main, 22 Thames Terrace, Norwich, CT Sanitary sewer overflow 4,600 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9328, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Mar 31, 2025, 10:15 PM EDT Apr 1, 2025, 12:15 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 1,997 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9314, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Mar 31, 2025, 10:15 PM EDT Apr 1, 2025, 12:15 AM EDT Norwich Public Utilities 004 Combined sewer overflow 1,997 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9314, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Mar 29, 2025, 7:30 PM EDT Mar 29, 2025, 7:45 PM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 170 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9300, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Mar 29, 2025, 7:30 PM EDT Mar 29, 2025, 7:45 PM EDT Norwich Public Utilities 004 Combined sewer overflow 170 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9300, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Mar 24, 2025, 2:30 PM EDT Mar 24, 2025, 5:30 PM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 2,765 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9286, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Mar 24, 2025, 2:30 PM EDT Mar 24, 2025, 5:30 PM EDT Norwich Public Utilities 004 Combined sewer overflow 2,765 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9286, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Mar 17, 2025, 1:15 AM EDT Mar 17, 2025, 2:30 AM EDT Norwich Public Utilities 005 Combined sewer overflowrevised 43,222 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9246, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Mar 17, 2025, 1:15 AM EDT Mar 17, 2025, 2:30 AM EDT Norwich Public Utilities 005 Combined sewer overflow 43,222 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9246, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Mar 17, 2025, 1:00 AM EDT Mar 17, 2025, 7:00 AM EDT Norwich Public Utilities 031 Combined sewer overflowrevised 31,957 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9239, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Mar 17, 2025, 1:00 AM EDT Mar 17, 2025, 8:45 AM EDT Norwich Public Utilities 032 Combined sewer overflowrevised 88,969 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9237, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Mar 17, 2025, 1:00 AM EDT Mar 17, 2025, 7:00 AM EDT Norwich Public Utilities 031 Combined sewer overflow 31,957 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9239, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Mar 17, 2025, 1:00 AM EDT Mar 17, 2025, 8:45 AM EDT Norwich Public Utilities 032 Combined sewer overflow 88,969 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9237, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Mar 17, 2025, 12:30 AM EDT Mar 17, 2025, 7:00 AM EDT Norwich Public Utilities 004 Combined sewer overflowrevised 25,658 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9238, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Mar 17, 2025, 12:30 AM EDT Mar 17, 2025, 7:00 AM EDT Norwich Public Utilities 004 Combined sewer overflow 25,658 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9238, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice record below · Map
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Mar 5, 2025, 9:15 PM EST Mar 5, 2025, 10:15 PM EST Norwich Public Utilities 031 Combined sewer overflowrevised 2,727 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9187, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Mar 5, 2025, 9:15 PM EST Mar 5, 2025, 10:00 PM EST Norwich Public Utilities 032 Combined sewer overflowrevised 8,678 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9186, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Mar 5, 2025, 9:15 PM EST Mar 5, 2025, 10:15 PM EST Norwich Public Utilities 031 Combined sewer overflow 2,727 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9187, 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)

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Mar 5, 2025, 9:15 PM EST Mar 5, 2025, 10:00 PM EST Norwich Public Utilities 032 Combined sewer overflow 8,678 gal Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 9186, 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)

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Mar 5, 2025, 8:30 PM EST Mar 6, 2025, 3:15 AM EST Norwich Public Utilities 004 Combined sewer overflowrevised 7,175 gal Norwich Public Utilities (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record 9165, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice record below · Map
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Showing the newest 100 events of 1,080 events. See them all with filters.

Outfalls on this water

No outfall in the registry is matched to this water.

Dischargers: City of New London WPCF, Norwich Public Utilities (City of Norwich WPCF), Town of Groton WPCF and collection system.

Launches

Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, ODbL). · Thames River on OpenBoatLaunch

Sources covering this water

1,080 events placed on this water in this build.