DirtyWaterWatch Public waters. Public record.

Connecticut / Waters /

Greenwich Harbor

Bay in Connecticut · near Greenwich

Current status

No current status shown

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

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

How long each status lasts, and why

Sources checked: CT DEEP CSO/SSO Performance Dashboard (QScend) (last successful check 2026-11-02 17:08 UTC); CT DEEP Sewage Right-to-Know annual report 2024 (last successful check 2026-11-02 17:10 UTC); CT DEEP reporting archive 2016-2021 (last successful check 2026-11-02 17:10 UTC). Status by DirtyWaterWatch, updated 2026-11-02 17:13 UTC.

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

Updated Nov 2, 2026, 12:13 PM EST.

Check Town of Greenwich Grass Island WPCF's notices · Bookmark this water page and check it before each trip · Report a missing notice or error

Map

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

The last 90 days

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

Source: DirtyWaterWatch calculations using the reports linked above and the published status rules. Updated 2026-11-02 17:13 UTC.

Reported discharges over time

  • Reported discharges, last 12 months2December 2025 to November 2026
  • Days with a reported discharge, last 12 months3December 2025 to November 2026
  • Hours with a discharge or advisory status, last 12 months112December 2025 to November 2026
  • 2026 season with a discharge or advisory status2.5%May to October; 112 hours

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

Reported discharges per month

6 reported discharges, January 2022 to November 2026. Counted from 4 source-confirmed or annual reports, 2 public notices.

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

Connecticut dashboard records begin December 2, 2021; where Connecticut's annual report covers an operator's month, the annual report is counted instead. Connecticut's Sewage Right-to-Know annual reports cover January 1, 2021 to November 2, 2026.

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

Show table
Reported discharges per month
MonthCombined sewer overflowSanitary sewer overflowTreatment bypass, blended or otherTotalCounted fromCoverage
January 20220000
February 20220000
March 20220000
April 20220000
May 20220000
June 20220000
July 20220000
August 20220000
September 20220000
October 20220000
November 20220000
December 20220000
January 20230000
February 20230000
March 20230000
April 20230000
May 20230000
June 20230000
July 20230000
August 20230000
September 20230011Source-confirmed reports or annual reports
October 20230000
November 20230000
December 20230000
January 20240000
February 20240000
March 20240000
April 20240000
May 20240011Source-confirmed reports or annual reports
June 20240000
July 20240000
August 20240000
September 20240000
October 20240000
November 20240000
December 20240000
January 20250000
February 20250000
March 20250022Source-confirmed reports or annual reports
April 20250000
May 20250000
June 20250000
July 20250000
August 20250000
September 20250000
October 20250000
November 20250000
December 20250000
January 20260000
February 20260000
March 20260000
April 20260000
May 20260000
June 20260000
July 20260000
August 20260000
September 20260101Public notices without a matching detailed report
October 20260011Public notices without a matching detailed report
November 20260000

Hours with a discharge or advisory status per month

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

  • Discharge or advisory reported

12 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here. Connecticut dashboard records begin December 2, 2021; where Connecticut's annual report covers an operator's month, the annual report is counted instead. Connecticut's Sewage Right-to-Know annual reports cover January 1, 2021 to November 2, 2026. Connecticut's reporting archive runs from July 4, 2016 to December 2, 2021.

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

Show table
Hours with a discharge or advisory status per month
MonthHours with a discharge or advisory statusHours from post-discharge periodsHours in the monthCoverage
January 202200744
February 202200672
March 202200744
April 202200720
May 202200744
June 202200720
July 202200744
August 202200744
September 202200720
October 202200744
November 202200720
December 202200744
January 202300744
February 202300672
March 202300744
April 202300720
May 202300744
June 202300720
July 202300744
August 202300744
September 20233737720
October 20232424744
November 202300720
December 202300744
January 202400744
February 202400696
March 202400744
April 202400720
May 20244848744
June 202400720
July 202400744
August 202400744
September 202400720
October 202400744
November 202400720
December 202400744
January 202500744
February 202500672
March 20254949744
April 202500720
May 202500744
June 202500720
July 202500744
August 202500744
September 202500720
October 202500744
November 202500720
December 202500744
January 202600744
February 202600672
March 202600744
April 202600720
May 202600744
June 202600720
July 202600744
August 202600744
September 20266464720
October 20264848744
November 20260037

Days with a reported discharge per month

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

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

Show table
Days with a reported discharge per month
MonthDays with a reported dischargeCoverage
January 20220
February 20220
March 20220
April 20220
May 20220
June 20220
July 20220
August 20220
September 20220
October 20220
November 20220
December 20220
January 20230
February 20230
March 20230
April 20230
May 20230
June 20230
July 20230
August 20230
September 20232
October 20230
November 20230
December 20230
January 20240
February 20240
March 20240
April 20240
May 20241
June 20240
July 20240
August 20240
September 20240
October 20240
November 20240
December 20240
January 20250
February 20250
March 20251
April 20250
May 20250
June 20250
July 20250
August 20250
September 20250
October 20250
November 20250
December 20250
January 20260
February 20260
March 20260
April 20260
May 20260
June 20260
July 20260
August 20260
September 20262
October 20261
November 20260

Reported discharges per year, 2016 to 2026

47 reported discharges, 2016 to 2026.

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

Connecticut dashboard records begin December 2, 2021; where Connecticut's annual report covers an operator's month, the annual report is counted instead. Connecticut's Sewage Right-to-Know annual reports cover January 1, 2021 to November 2, 2026. Connecticut's reporting archive runs from July 4, 2016 to December 2, 2021.

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

Show table
Reported discharges per year, 2016 to 2026
YearCombined sewer overflowSanitary sewer overflowTreatment bypass, blended or otherTotalCoverage
20160000Incomplete source coverage
20170000
20180123
20190000
20200000
2021035338Incomplete source coverage
20220000
20230011
20240011
20250022
20260112

Reported volume per year

Gallons (axis: K thousand, M million), summed from the 17 reports that gave a volume as a number (30 did not).

  • Incomplete source coverage

30 of 47 discharge reports gave no volume as a number (2 gave a range); only numbers are summed. Connecticut's 2016 to 2021 archive gives volumes as ranges ("20,001 - 50,000 gallons"); they are not summed.

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

Show table
Reported volume per year
YearReported volume, gallonsReports with a volumeReports without a volumeCoverage
2016000Incomplete source coverage
2017000
2018003
2019000
2020000
20218,3001325Incomplete source coverage
2022000
202320,00010
202461,00010
20255,00020
2026002

Hours with a discharge or advisory status per year

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

  • Discharge or advisory reported
  • Incomplete source coverage

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

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

Show table
Hours with a discharge or advisory status per year
YearHours with a discharge or advisory statusShare of the yearCoverage
201600.0%Incomplete source coverage
201700.0%
20181501.7%
201900.0%
202000.0%
20211291.5%Incomplete source coverage
202200.0%
2023610.7%
2024480.5%
2025490.6%
20261121.5%

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

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

  • Discharge or advisory reported
  • Season with incomplete source coverage

Seasons with incomplete source coverage: 2016. The share is of the hours a source covered. 12 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here.

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

Show table
Share of the May to October season with a discharge or advisory status
SeasonShare with a discharge or advisory statusHours with a discharge or advisory statusHours a source coveredHours in the seasonIncomplete source coverage
20160.0%02,8764,416Yes
20170.0%04,4164,416
20181.1%484,4164,416
20190.0%04,4164,416
20200.0%04,4164,416
20212.9%1294,4164,416
20220.0%04,4164,416
20231.4%614,4164,416
20241.1%484,4164,416
20250.0%04,4164,416
20262.5%1124,4164,416

Reported discharges by calendar month, all years

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

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

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

Show table
Reported discharges by calendar month, all years
MonthReported dischargesYears of records
January010
February010
March310
April110
May110
June010
July2311
August011
September1811
October111
November011
December010

Reported discharges by wastewater outlet

Wastewater outlets with the most tracked discharge records: 10 of 14, all years. Counts depend on reporting coverage and do not measure legal compliance or harm.

Connecticut dashboard records begin December 2, 2021; where Connecticut's annual report covers an operator's month, the annual report is counted instead. Connecticut's Sewage Right-to-Know annual reports cover January 1, 2021 to November 2, 2026. Connecticut's reporting archive runs from July 4, 2016 to December 2, 2021.

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

Show table
Reported discharges by wastewater outlet
Wastewater outletSewer operatorReported discharges
Manhole, One Greenwich PlazaGreenwich - Grass Island WPCF9
Manhole, 1 Horseneck LaneGreenwich - Grass Island WPCF7
Treatment Plant, 250A Shore Rd, Greenwich, CTGREENWICH (GRASS ISLAND WPCF)4
Treatment Plant, 250A Shore RoadGreenwich - Grass Island WPCF4
Manhole, 251 Shore RoadGreenwich - Grass Island WPCF4
Manhole, 2 Steamboat Road/0 Arch StreetGreenwich - Grass Island WPCF3
Manhole, 201-239 Shore Road (MHs 1292 and 4451) and 251-257 Shore Road (MHs 1436; 5063; 4449; 3701; 1300)Greenwich - Grass Island WPCF3
Manhole, 297 Shore RoadGreenwich - Grass Island WPCF3
Manhole, 257 Shore RoadGreenwich - Grass Island WPCF3
Manhole, 250B Shore RoadGreenwich - Grass Island WPCF3
Other outlets (4)4
How these charts are counted

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

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

Reports linked to Greenwich Harbor

Reports linked to Greenwich Harbor, newest first
StartEnd Sewer operator OutletTypeVolumeSourceLinks
Oct 2, 2026, 8:00 AM EDT Oct 2, 2026, 8:15 AM EDT GREENWICH (GRASS ISLAND WPCF) Treatment Plant, 250A Shore Rd, Greenwich, CT Treatment plant bypass “Approximately 50 gallons or less” GREENWICH (GRASS ISLAND WPCF) (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11560, the source gives no report time, retrieved 2026-11-02 17:08 UTC · Read the original notice Read report: Treatment plant bypass, GREENWICH (GRASS ISLAND WPCF), Oct 2, 2026, 8:00 AM EDT · Map
Sep 13, 2026, 9:00 AM EDT Sep 14, 2026, 12:30 AM EDT GREENWICH (GRASS ISLAND WPCF) Manhole, 239 Shore Rd, Greenwich, CT Sanitary sewer overflow (SSO) “Unknown, but would have been significant” GREENWICH (GRASS ISLAND WPCF) (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11477, the source gives no report time, retrieved 2026-11-02 11:20 UTC · Read the original notice Read report: Sanitary sewer overflow (SSO), GREENWICH (GRASS ISLAND WPCF), Sep 13, 2026, 9:00 AM EDT · Map
Mar 6, 2025, 10:30 AM EST Mar 6, 2025, 11:15 AM EST GREENWICH (GRASS ISLAND WPCF) Treatment Plant, 250A Shore Rd, Greenwich, CT Treatment plant bypass 2,500 gallons GREENWICH (GRASS ISLAND WPCF) (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9189-2, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Mar 6, 2025, 10:30 AM EST Mar 6, 2025, 11:15 AM EST GREENWICH (GRASS ISLAND WPCF) Treatment Plant, 250A Shore Rd, Greenwich, CT Treatment plant bypass 2,500 gallons GREENWICH (GRASS ISLAND WPCF) (CT DEEP Sewage Right-to-Know annual report 2026) via CT DEEP Sewage Right-to-Know annual report 2024, record 9189, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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May 24, 2024, 8:45 AM EDT May 24, 2024, 9:00 AM EDT GREENWICH (GRASS ISLAND WPCF) Treatment Plant, 250A Shore Rd, Greenwich, CT Treatment plant bypass 61,000 gallons GREENWICH (GRASS ISLAND WPCF) (CT DEEP Sewage Right-to-Know annual report 2025) via CT DEEP Sewage Right-to-Know annual report 2024, record xc1a2e95e0a27, published Mar 31, 2025, 1:52 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Sep 29, 2023, 11:30 AM EDT Sep 30, 2023, 12:00 AM EDT GREENWICH (GRASS ISLAND WPCF) Treatment Plant, Grass Island Rd, Greenwich, CT Treatment plant bypass 20,000 gallons GREENWICH (GRASS ISLAND WPCF) (CT DEEP Sewage Right-to-Know annual report 2024), record xc24f612f35be, published Jan 9, 2025, 2:55 PM EST, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 10:30 AM EDT Sep 2, 2021, 3:30 PM EDT Greenwich - Grass Island WPCF Manhole, 1 Horseneck Lane Sanitary sewer overflow (SSO) 1,000 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record xec31d2f94b34, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 10:30 AM EDT Sep 2, 2021, 3:30 PM EDT Greenwich - Grass Island WPCF Manhole, 1 Horseneck Lane Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963285, reported Sep 2, 2021, 10:52 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 10:30 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, 1 Horseneck Lane Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963284, reported Sep 2, 2021, 10:52 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 7:50 AM EDT Sep 2, 2021, 8:15 PM EDT Greenwich - Grass Island WPCF Treatment Plant, 250A Shore Road Treatment plant bypass 1,000 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record x38566e1460ab, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 7:50 AM EDT Sep 2, 2021, 8:15 PM EDT Greenwich - Grass Island WPCF Treatment Plant, 250A Shore Road Treatment plant bypass “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963883, reported Sep 2, 2021, 9:30 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 7:50 AM EDT end not reported Greenwich - Grass Island WPCF Treatment Plant, 250A Shore Road Treatment plant bypass “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963882, reported Sep 2, 2021, 9:30 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 7:20 AM EDT Sep 2, 2021, 3:30 PM EDT Greenwich - Grass Island WPCF Manhole, 2 Steamboat Road/0 Arch Street Sanitary sewer overflow (SSO) 1,000 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record x8ef60edf7cd3, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 7:20 AM EDT Sep 2, 2021, 3:30 PM EDT Greenwich - Grass Island WPCF Manhole, 2 Steamboat Road/0 Arch Street Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963368, reported Sep 2, 2021, 9:25 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 7:20 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, 2 Steamboat Road/0 Arch Street Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963367, reported Sep 2, 2021, 9:25 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 5:30 AM EDT Sep 2, 2021, 5:30 AM EDT Greenwich - Grass Island WPCF Manhole, 1 Horseneck Lane Sanitary sewer overflow (SSO) 1,000 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record xbc8f8f398318-2, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 5:30 AM EDT Sep 2, 2021, 7:15 AM EDT Greenwich - Grass Island WPCF Manhole, 1 Horseneck Lane Sanitary sewer overflow (SSO) 1,000 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record xbc8f8f398318, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 5:30 AM EDT Sep 2, 2021, 7:15 AM EDT Greenwich - Grass Island WPCF Manhole, 1 Horseneck Lane Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963289, reported Sep 2, 2021, 9:21 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 5:30 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, 1 Horseneck Lane Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963288, reported Sep 2, 2021, 9:21 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 3:30 AM EDT Sep 2, 2021, 7:15 AM EDT Greenwich - Grass Island WPCF Manhole, 201-239 Shore Road (MHs 1292 and 4451) and 251-257 Shore Road (MHs 1436; 5063; 4449; 3701; 1300) Sanitary sewer overflow (SSO) 1,200 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record xff96311f4c94, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 3:30 AM EDT Sep 2, 2021, 7:15 AM EDT Greenwich - Grass Island WPCF Manhole, 201-239 Shore Road (MHs 1292 and 4451) and 251-257 Shore Road (MHs 1436; 5063; 4449; 3701; 1300) Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963287, reported Sep 2, 2021, 10:03 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Sep 2, 2021, 3:30 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, 201-239 Shore Road (MHs 1292 and 4451) and 251-257 Shore Road (MHs 1436; 5063; 4449; 3701; 1300) Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963286, reported Sep 2, 2021, 10:03 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:30 AM EDT Jul 9, 2021, 8:00 PM EDT Greenwich - Grass Island WPCF Manhole, One Greenwich Plaza Sanitary sewer overflow (SSO) 300 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record xdd664296a5b8-2, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:30 AM EDT Jul 9, 2021, 8:00 PM EDT Greenwich - Grass Island WPCF Manhole, One Greenwich Plaza Sanitary sewer overflow (SSO) 300 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record xdd664296a5b8, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:30 AM EDT Jul 9, 2021, 8:00 PM EDT Greenwich - Grass Island WPCF Manhole, One Greenwich Plaza Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963809, reported Jul 9, 2021, 11:24 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:30 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, One Greenwich Plaza Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963808, reported Jul 9, 2021, 11:24 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:30 AM EDT Jul 9, 2021, 8:00 PM EDT Greenwich - Grass Island WPCF Manhole, One Greenwich Plaza Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963807, reported Jul 9, 2021, 11:15 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:30 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, One Greenwich Plaza Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963806, reported Jul 9, 2021, 11:15 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT Jul 10, 2021, 2:00 AM EDT Greenwich - Grass Island WPCF Manhole, 251 Shore Road Sanitary sewer overflow (SSO) 300 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record xed51fa39b9fe, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT Jul 10, 2021, 2:00 AM EDT Greenwich - Grass Island WPCF Manhole, 297 Shore Road Sanitary sewer overflow (SSO) 300 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record xe9e5c8ae5f0a, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT Jul 10, 2021, 2:00 AM EDT Greenwich - Grass Island WPCF Manhole, 257 Shore Road Sanitary sewer overflow (SSO) 300 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record x6124c4ba01e7, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT Jul 10, 2021, 2:00 AM EDT Greenwich - Grass Island WPCF Manhole, 250B Shore Road Sanitary sewer overflow (SSO) 300 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record x0e8cf6d28a02, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT Jul 10, 2021, 2:00 AM EDT Greenwich - Grass Island WPCF Manhole, 297 Shore Road Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963829, reported Jul 9, 2021, 10:59 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, 297 Shore Road Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963828, reported Jul 9, 2021, 10:59 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT Jul 10, 2021, 2:00 AM EDT Greenwich - Grass Island WPCF Manhole, 251 Shore Road Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963814, reported Jul 9, 2021, 10:44 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT Jul 10, 2021, 12:00 AM EDT Greenwich - Grass Island WPCF Manhole, 251 Shore Road Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963813, reported Jul 9, 2021, 10:44 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, 251 Shore Road Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963812, reported Jul 9, 2021, 10:44 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT Jul 10, 2021, 2:00 AM EDT Greenwich - Grass Island WPCF Manhole, 257 Shore Road Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963805, reported Jul 9, 2021, 11:03 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, 257 Shore Road Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963804, reported Jul 9, 2021, 11:03 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT Jul 10, 2021, 2:00 AM EDT Greenwich - Grass Island WPCF Manhole, 250B Shore Road Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963803, reported Jul 9, 2021, 10:47 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 10:15 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, 250B Shore Road Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963802, reported Jul 9, 2021, 10:47 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 9:45 AM EDT Jul 9, 2021, 8:00 PM EDT Greenwich - Grass Island WPCF Manhole, One Greenwich Plaza Sanitary sewer overflow (SSO) 300 gallons Greenwich - Grass Island WPCF (CT DEEP Sewage Right-to-Know annual report 2022) via CT DEEP Sewage Right-to-Know annual report 2024, record x3920b05faf95, published Oct 9, 2024, 12:47 PM EDT, retrieved 2026-11-02 17:08 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 9:45 AM EDT Jul 9, 2021, 8:00 PM EDT Greenwich - Grass Island WPCF Manhole, One Greenwich Plaza Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963797, reported Jul 9, 2021, 10:05 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 9, 2021, 9:45 AM EDT end not reported Greenwich - Grass Island WPCF Manhole, One Greenwich Plaza Sanitary sewer overflow (SSO) “Undetermined” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963796, reported Jul 9, 2021, 10:05 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Jul 11, 2018, 2:30 PM EDT Jul 11, 2018, 2:40 PM EDT Greenwich - Grass Island WPCF Treatment Plant, 250A Grass Island Road Treatment plant bypass “Approximately 250-gallons (or less)” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35965658, reported Jul 11, 2018, 3:51 PM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Apr 16, 2018, 12:30 PM EDT Apr 16, 2018, 6:00 PM EDT Greenwich - Grass Island WPCF Treatment Plant, 250A Shore Road Treatment plant bypass “1,001 - 5,000 gallons” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35963896, reported Apr 16, 2018, 2:39 PM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Mar 12, 2018, 9:38 AM EDT Mar 12, 2018, 10:20 AM EDT Greenwich - Grass Island WPCF Sewer Main, 15 Havemeyer Place and 11 Bruce Place Sanitary sewer overflow (SSO) “501 - 1,000 gallons” Greenwich - Grass Island WPCF (CT DEEP reporting archive 2016-2021), record bypass-35964749, reported Mar 12, 2018, 11:21 AM EDT, retrieved 2026-11-02 17:10 UTC · Read the original notice Open record below · Map
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Wastewater outlets on this water

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

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

Sewer operators listed for this water: Town of Greenwich Grass Island WPCF.

Boat launches

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

Sources covering this water

47 records linked to this water. Updated Nov 2, 2026, 12:13 PM EST.