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Massachusetts / Waters /

Alewife Brook

Stream in Massachusetts · near Arlington, Cambridge, Medford, Somerville

Current status

End not confirmed

A discharge was reported, and we have not found an end time in the sources we track.

Why this status: End not confirmed: DirtyWaterWatch rule for missing end times.

Why we use this rule: From day 7 to day 30, the map marks the end as unconfirmed. After day 30, the record remains flagged on its report and water pages.

How long each status lasts, and why

This status since Oct 27, 2026, 10:10 AM EDT.

Source: CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record b8897e69-76ab-43f4-85a6-37caf45a316f, published Oct 13, 2026, 10:10 AM EDT, retrieved 2026-11-02 15:54 UTC · Read the original notice

Updated Nov 2, 2026, 11:21 AM EST.

Get alerts from City of Cambridge DPW · Bookmark this water page and check it before each trip · Report a missing notice or error

Reports behind this status

Advice in the reports

CITY OF CAMBRIDGE (MassDEP sewage notification portal) · Oct 13, 2026 · Current status: sets this water's status now

“Avoid contact with these water bodies for 48 hours after the discharge or overflow ceases due to increased health risks from bacteria and other pollutants. See website for more information on whether specific resource areas, such as bathing beaches, are affected.”

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.

Estimated downstream stretches on Alewife Brook

No downstream stretch has a current status here as of Nov 2, 2026, 11:21 AM EST. Check the reports below.

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 16:21 UTC.

Reported discharges over time

  • Discharge events, last 12 months10Dec 2025 to Nov 2026
  • Days with a discharge, last 12 months8Dec 2025 to Nov 2026
  • Hours under advisory, last 12 months279Dec 2025 to Nov 2026
  • 2026 season under advisory6.3%May to October; 279 h

Discharge events per month

119 events, Jan 2022 to Nov 2026. Counted from 118 verified or annual reports, 1 public notices.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Bypass, blended or other
  • No source
  • Partly covered or sparse source
No source

No source covers 2022-01 to 2022-05. MassDEP portal records begin 2022-06-30. Verified Data Reports arrive after the month ends, so the latest months count public notices.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table
Discharge events per month
MonthCombined sewer overflowSanitary sewer overflowBypass, blended or otherTotalCounted fromCoverage
Jan 20220000No source
Feb 20220000No source
Mar 20220000No source
Apr 20220000No source
May 20220000No source
Jun 20220000Partly covered or sparse source
Jul 20220000
Aug 20222002Verified or annual reports
Sep 20221001Verified or annual reports
Oct 20223003Verified or annual reports
Nov 20222002Verified or annual reports
Dec 20221001Verified or annual reports
Jan 20231001Verified or annual reports
Feb 20230000
Mar 20232002Verified or annual reports
Apr 20230000
May 20236006Verified or annual reports
Jun 20231001Verified or annual reports
Jul 2023130013Verified or annual reports
Aug 2023100010Verified or annual reports
Sep 20236006Verified or annual reports
Oct 20230000
Nov 20230000
Dec 20236006Verified or annual reports
Jan 20247108Verified or annual reports
Feb 20240000
Mar 20243003Verified or annual reports
Apr 20241001Verified or annual reports
May 20246006Verified or annual reports
Jun 20246006Verified or annual reports
Jul 20242002Verified or annual reports
Aug 20243003Verified or annual reports
Sep 20240000
Oct 20240000
Nov 20240000
Dec 20243003Verified or annual reports
Jan 20251001Verified or annual reports
Feb 20250000
Mar 20252002Verified or annual reports
Apr 20251001Verified or annual reports
May 20252002Verified or annual reports
Jun 20251001Verified or annual reports
Jul 20254004Verified or annual reports
Aug 20253003Verified or annual reports
Sep 20254004Verified or annual reports
Oct 20255005Verified or annual reports
Nov 20250000
Dec 20250000
Jan 20260000
Feb 20260000
Mar 20260000
Apr 20260000
May 20260000
Jun 20261001Verified or annual reports
Jul 20268008Verified or annual reports
Aug 20260000
Sep 20260000
Oct 20261001Public notices (no report yet)
Nov 20260000

Hours under advisory per month

Hours this water was under an advisory, by the map's red rules.

  • Advisory in effect
  • No source
  • Partly covered or sparse source

No source covers 2022-01 to 2022-05. 1 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. MassDEP portal records begin 2022-06-30. Verified Data Reports arrive after the month ends, so the latest months count public notices.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table
Hours under advisory per month
MonthHours under advisoryFrom discharge windowsHours in monthCoverage
Jan 202200744No source
Feb 202200672No source
Mar 202200744No source
Apr 202200720No source
May 202200744No source
Jun 202200720Partly covered or sparse source
Jul 202200744
Aug 20229797744
Sep 20224848720
Oct 20229898744
Nov 20225353720
Dec 20229292744
Jan 20235050744
Feb 202300672
Mar 2023100100744
Apr 202300720
May 20239999744
Jun 20234949720
Jul 2023296296744
Aug 2023235235744
Sep 2023158158720
Oct 202300744
Nov 202300720
Dec 2023100100744
Jan 2024110110744
Feb 202400696
Mar 2024145145744
Apr 20244848720
May 2024136136744
Jun 2024156156720
Jul 20241212744
Aug 2024182182744
Sep 202400720
Oct 202400744
Nov 202400720
Dec 20248989744
Jan 20255151744
Feb 202500672
Mar 20259797744
Apr 20254949720
May 2025100100744
Jun 20254949720
Jul 2025148148744
Aug 2025142142744
Sep 2025121121720
Oct 2025143143744
Nov 202500720
Dec 202500744
Jan 202600744
Feb 202600672
Mar 202600744
Apr 202600720
May 202600744
Jun 20264949720
Jul 2026229229744
Aug 202611744
Sep 202600720
Oct 202600744
Nov 20260036

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.

  • No source
  • Partly covered or sparse source
No source

No source covers 2022-01 to 2022-05.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table
Days with a discharge per month
MonthDays with a dischargeCoverage
Jan 20220No source
Feb 20220No source
Mar 20220No source
Apr 20220No source
May 20220No source
Jun 20220Partly covered or sparse source
Jul 20220
Aug 20222
Sep 20221
Oct 20222
Nov 20222
Dec 20221
Jan 20231
Feb 20230
Mar 20232
Apr 20230
May 20233
Jun 20231
Jul 20236
Aug 20235
Sep 20233
Oct 20230
Nov 20230
Dec 20232
Jan 20242
Feb 20240
Mar 20243
Apr 20241
May 20243
Jun 20243
Jul 20241
Aug 20243
Sep 20240
Oct 20240
Nov 20240
Dec 20242
Jan 20251
Feb 20250
Mar 20252
Apr 20251
May 20252
Jun 20251
Jul 20254
Aug 20252
Sep 20253
Oct 20253
Nov 20250
Dec 20250
Jan 20260
Feb 20260
Mar 20260
Apr 20260
May 20260
Jun 20261
Jul 20266
Aug 20260
Sep 20260
Oct 20261
Nov 20260

Reported volume per year

Gallons, summed from the 118 events that gave a number (1 did not).

  • Partly covered or sparse source
Sparse source

1 of 119 events gave no volume as a number; only numbers are summed.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table
Reported volume per year
YearGallonsEvents with a numberEvents withoutCoverage
2022482,00090Partly covered or sparse source
202327,811,000450
202420,372,100320
202510,656,000230
202617,393,00091

Hours under advisory per year

Hours under advisory each year; 2026 to date.

  • Advisory in effect
  • Partly covered or sparse source
Sparse source

1 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.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table
Hours under advisory per year
YearHours under advisoryShare of the yearCoverage
20223884.4%Partly covered or sparse source
20231,08712.4%
202487910.0%
202589810.3%
20262793.8%

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: 2022 (share is of the covered hours). 1 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.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table
Share of the May to October season under advisory
SeasonShare under advisoryHours under advisoryHours coveredSeason hoursPartly covered
20228.2%2422,9584,416yes
202319.0%8374,4164,416
202411.0%4864,4164,416
202515.9%7014,4164,416
20266.3%2794,4164,416

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.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table
Discharge events by calendar month, all years
MonthEventsYears of records
Jan104
Feb04
Mar74
Apr24
May144
Jun95
Jul275
Aug185
Sep115
Oct95
Nov25
Dec104

Discharge events by outfall

The 5 outfalls with the most events of 5, all years.

MassDEP portal records begin 2022-06-30. Verified Data Reports arrive after the month ends, so the latest months count public notices.

Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.

Show table
Discharge events by outfall
OutfallDischargerEvents
CAM401A MBTA 97 CAMBRIDGE PARK DRCITY OF CAMBRIDGE74
SOM001A 100 FT BEYOND END OF MATIGNON RDCITY OF SOMERVILLE24
CAM401B INT MASS AVE & ALEWIFE BKCITY OF CAMBRIDGE13
MWR003 165 FT WEST OF ALEWIFE STATION ACCESS RDMASSACHUSETTS WATER RESOURCES AUTHORITY4
CAM001 BETW FOCH ST AND MURRAY HILL RDCITY OF CAMBRIDGE3
Outfall not stated1
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.

  • MassDEP sewage notification portal: 2022-06-30 to now

Reports linked to Alewife Brook

Reports linked to Alewife Brook, newest first
StartEnd Sewer operator OutletTypeVolumeSourceLinks
Oct 11, 2026, 7:57 PM EDT end time not reported CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record b8897e69-76ab-43f4-85a6-37caf45a316f, published Oct 13, 2026, 10:10 AM EDT, retrieved 2026-11-02 15:54 UTC · Read the original notice
Jul 29, 2026, 11:45 PM EDT Jul 30, 2026, 12:30 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 20,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record a8711c37-ecca-45ba-9d4c-3e9ee8dd1243, published Aug 14, 2026, 3:30 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 29, 2026, 11:45 PM EDT Jul 30, 2026, 12:30 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record b16b77f0-4533-4294-bd24-28883fe57ff8, published Jul 30, 2026, 9:21 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 29, 2026, 11:15 AM EDT Jul 29, 2026, 11:45 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 270,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record b08e712b-521a-40a4-bedc-6d24459b31ed, published Aug 14, 2026, 3:29 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 29, 2026, 11:00 AM EDT Jul 29, 2026, 11:45 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record c026c4d8-0b71-4e0e-8c04-21ad7e8b08e6, published Jul 30, 2026, 9:17 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 22, 2026, 4:25 PM EDT Jul 22, 2026, 4:35 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO) 106,000 gallons CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 0f673e83-57ac-45ad-b3e8-bd26684be44f, published Aug 13, 2026, 9:02 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 22, 2026, 4:25 PM EDT Jul 22, 2026, 4:35 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO)Earlier version volume not reported CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record e939f5ef-7910-4bd9-9b77-9f70ed3591fb, published Jul 24, 2026, 2:08 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 22, 2026, 4:22 PM EDT Jul 22, 2026, 5:00 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 00db6421-c38c-48fb-ac8b-8dfee3ebc599, published Jul 23, 2026, 9:34 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 22, 2026, 4:15 PM EDT Jul 22, 2026, 5:00 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 1.83 million gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 6efecf5d-1a90-430e-a728-1eb753af2372, published Aug 14, 2026, 3:05 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 21, 2026, 5:45 PM EDT Jul 21, 2026, 8:45 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 14.1 million gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 62dd6ccf-582d-4dfa-ba9e-0931cfc184aa, published Aug 14, 2026, 2:57 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 21, 2026, 5:45 PM EDT Jul 21, 2026, 8:45 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 1a665188-535a-4307-b94c-1a0e04705cb8, published Jul 22, 2026, 11:14 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 7, 2026, 6:38 PM EDT Jul 7, 2026, 7:08 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record fbefa9c3-326a-430b-b3af-24802058c806, published Jul 8, 2026, 8:18 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 7, 2026, 6:27 PM EDT Jul 7, 2026, 7:08 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 170,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 6a6f2576-254e-4cef-af75-2e6bcde66dee, published Aug 14, 2026, 12:19 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 4, 2026, 7:13 PM EDT Jul 4, 2026, 7:30 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 6c6833a1-926c-405f-8ddc-e0d4a04d12a4, published Jul 6, 2026, 10:05 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 4, 2026, 7:10 PM EDT Jul 4, 2026, 7:15 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO) 17,000 gallons CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 2d46e54f-ef0c-4cba-9aba-45c24eef7b04, published Aug 13, 2026, 8:59 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 4, 2026, 7:10 PM EDT Jul 4, 2026, 7:15 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO)Earlier version volume not reported CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 39671202-33c8-4a50-be42-cd3b68682954, published Jul 4, 2026, 9:00 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jul 4, 2026, 7:00 PM EDT Jul 4, 2026, 7:30 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 590,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record cdc6d42a-0f49-4d6a-ad85-a25a0ed62e34, published Aug 14, 2026, 12:16 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jun 18, 2026, 7:08 PM EDT Jun 18, 2026, 7:45 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record d6e51c07-d11d-46ec-b5a5-74bd08321aeb, published Jun 19, 2026, 9:22 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Jun 18, 2026, 6:45 PM EDT Jun 18, 2026, 7:45 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 290,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record d5711218-8542-4c3e-91ff-351ebbfd469a, published Jul 15, 2026, 2:10 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
Oct 22, 2025, 8:54 AM EDT Oct 22, 2025, 8:54 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 0 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 44748008-f532-4fb5-93f6-61b7eb37253a, published Nov 18, 2025, 9:11 AM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Oct 22, 2025, 8:54 AM EDT Oct 22, 2025, 8:54 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record a599c8ff-e6a8-41cb-8439-cad90050da02, published Oct 22, 2025, 12:29 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Oct 20, 2025, 11:20 AM EDT Oct 20, 2025, 11:40 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 210,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 4ceec3da-05c9-431a-ab72-546e4842c9f7, published Nov 14, 2025, 12:39 PM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Oct 20, 2025, 11:15 AM EDT Oct 20, 2025, 11:40 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 9d208b5b-f124-4997-b8eb-4e31c163d0ac, published Oct 20, 2025, 4:19 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Oct 8, 2025, 9:15 AM EDT Oct 8, 2025, 10:00 AM EDT CITY OF CAMBRIDGE CAM401B INT MASS AVE & ALEWIFE BK Combined sewer overflow (CSO) 30,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record ced5d58b-993c-483f-b63d-e17168d27075, published Nov 14, 2025, 12:34 PM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Oct 8, 2025, 9:05 AM EDT Oct 8, 2025, 10:00 AM EDT CITY OF CAMBRIDGE CAM401B INT MASS AVE & ALEWIFE BK Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 883490d8-9921-4b7c-8fe6-ce282aa26ad2, published Oct 8, 2025, 5:06 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Oct 8, 2025, 8:55 AM EDT Oct 8, 2025, 9:35 AM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO) 729,000 gallons CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record a205351b-6299-4610-b856-0cb47a09717c, published Oct 14, 2025, 11:30 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Oct 8, 2025, 8:55 AM EDT Oct 8, 2025, 9:35 AM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO)Earlier version volume not reported CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 7a32b536-dab0-48fd-a723-8a33a13fe73c, published Oct 8, 2025, 3:50 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Oct 8, 2025, 8:45 AM EDT Oct 8, 2025, 9:30 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 2.14 million gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 959bbe4c-2c0d-412c-8cd7-acc0e661317a, published Nov 14, 2025, 12:32 PM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Oct 8, 2025, 8:45 AM EDT Oct 8, 2025, 9:30 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 2755cfdb-bef6-40eb-8a8f-e7bd9f6ec61b, published Oct 8, 2025, 5:06 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Sep 18, 2025, 3:15 AM EDT Sep 18, 2025, 3:45 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 10,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 6e54ab42-5395-46a0-b9b5-da4d1baa4289, published Oct 14, 2025, 3:59 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Sep 18, 2025, 3:15 AM EDT Sep 18, 2025, 3:45 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 4ea9dbce-5afe-40e6-b129-aff6133a7513, published Sep 19, 2025, 9:28 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Sep 7, 2025, 6:10 PM EDT Sep 7, 2025, 6:25 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO) 388,000 gallons CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record d897f827-f041-49b3-993a-aef2bcc3e357, published Oct 14, 2025, 8:24 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Sep 6, 2025, 6:15 PM EDT Sep 6, 2025, 6:30 PM EDT CITY OF CAMBRIDGE CAM401B INT MASS AVE & ALEWIFE BK Combined sewer overflow (CSO) 10,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record aa129dd4-e17e-4ec1-8e16-b0af70041544, published Oct 14, 2025, 3:50 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Sep 6, 2025, 6:15 PM EDT Sep 6, 2025, 6:30 PM EDT CITY OF CAMBRIDGE CAM401B INT MASS AVE & ALEWIFE BK Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 7f3ac47a-4b52-46a2-b3b0-56c09b574cda, published Sep 9, 2025, 11:20 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Sep 6, 2025, 5:45 PM EDT Sep 6, 2025, 7:15 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 1.96 million gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 80f8d2c1-9d71-4b1e-a8f6-5feb2df910ad, published Oct 14, 2025, 3:55 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Sep 6, 2025, 5:30 PM EDT Sep 6, 2025, 7:15 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 150a93b8-d312-46a3-a07f-9dd53c3c699a, published Sep 19, 2025, 9:51 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 29, 2025, 3:00 PM EDT Aug 29, 2025, 3:10 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO) 39,000 gallons CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record ac8add68-079f-4c34-897c-2a3afa54e950, published Oct 14, 2025, 8:33 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 29, 2025, 3:00 PM EDT Aug 29, 2025, 3:10 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 340,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record e9d1db74-af9b-4385-9e8f-a55137befb22, published Sep 15, 2025, 9:12 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 29, 2025, 3:00 PM EDT Aug 29, 2025, 3:10 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO)Earlier version volume not reported CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record b27773c4-2a72-4956-923b-75e773a8491d, published Aug 30, 2025, 8:12 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 29, 2025, 2:45 PM EDT Aug 29, 2025, 3:10 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 456684cc-5f68-45dd-9f51-67393987202d, published Sep 2, 2025, 8:57 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 14, 2025, 6:40 PM EDT Aug 14, 2025, 6:55 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 5189fc7b-ba12-418d-afd8-036b90aa8f73, published Aug 15, 2025, 8:55 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 14, 2025, 6:30 PM EDT Aug 14, 2025, 6:55 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 1.27 million gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 2153cc1b-3c6c-4b78-a9a7-3feada9186ed, published Sep 15, 2025, 9:10 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 31, 2025, 9:00 PM EDT Jul 31, 2025, 9:15 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 40,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record d242cffc-7d24-4a5d-84dc-18b69a6ed4f1, published Aug 14, 2025, 9:54 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 25, 2025, 3:10 PM EDT Jul 25, 2025, 3:10 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 218bdfea-220f-40b0-87e9-d126d0e59a22, published Jul 28, 2025, 10:34 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 25, 2025, 3:00 PM EDT Jul 25, 2025, 3:10 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 50,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 5e818d5a-bf17-416e-83f2-5187fda5bbfc, published Aug 14, 2025, 9:49 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 20, 2025, 7:52 PM EDT Jul 20, 2025, 8:00 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record a2df9dc1-725d-41d7-9373-81738e2968d8, published Jul 21, 2025, 11:06 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 20, 2025, 7:45 PM EDT Jul 20, 2025, 8:00 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 80,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 1f1f1fea-80f0-4c85-96e9-4f89bfe588e7, published Aug 14, 2025, 9:47 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 8, 2025, 11:24 PM EDT Jul 8, 2025, 11:20 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 5042a7e8-6e44-42aa-9d77-a5cb8614596d, published Jul 10, 2025, 10:31 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 8, 2025, 11:15 PM EDT Jul 8, 2025, 11:20 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 10,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 4a558b29-773f-43dc-8d0d-8c829424f841, published Aug 12, 2025, 8:56 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 7, 2025, 5:30 PM EDT Jun 7, 2025, 6:00 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 330,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 25256bdd-db0c-4210-84e2-91f9c48314cd, published Jul 14, 2025, 9:54 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 7, 2025, 5:23 PM EDT Jun 7, 2025, 6:00 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 08a0531f-0687-4007-85bb-2403656c0576, published Jun 9, 2025, 11:05 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 22, 2025, 7:00 PM EDT May 22, 2025, 10:15 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 1.35 million gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 2db3bc17-1888-4719-b546-0edc75d65d75, published Jun 13, 2025, 11:45 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 22, 2025, 6:38 PM EDT May 22, 2025, 10:15 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record bc481c6d-4038-447e-b1f3-c94fd0974091, published May 23, 2025, 2:06 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 6, 2025, 6:15 PM EDT May 6, 2025, 6:30 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 160,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record d6822169-0dfb-4bf1-9f5f-57ccbb027a79, published Jun 13, 2025, 11:42 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 6, 2025, 6:13 PM EDT May 6, 2025, 6:30 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 045480de-b364-46b6-b2e2-6319fcb0509e, published May 7, 2025, 10:16 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Apr 1, 2025, 12:45 AM EDT Apr 1, 2025, 1:15 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 350,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 10135e3c-902b-467c-b49b-4bfac358e6e8, published May 12, 2025, 3:12 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Apr 1, 2025, 12:38 AM EDT Apr 1, 2025, 1:15 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record d981f2ee-ed74-43df-b277-428164459823, published Apr 1, 2025, 12:28 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Mar 17, 2025, 4:00 AM EDT Mar 17, 2025, 4:45 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 1.02 million gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 29268782-a3b6-403a-a685-7b0463b9d5c6, published Apr 14, 2025, 3:10 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Mar 17, 2025, 3:53 AM EDT Mar 17, 2025, 4:45 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 5a95ef45-ee5d-4bde-bd57-005cb7c924e3, published Mar 17, 2025, 12:42 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Mar 6, 2025, 4:14 AM EST Mar 6, 2025, 4:44 AM EST CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 100,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 96267222-6065-43e3-8568-db76f43ff6ac, published Apr 14, 2025, 3:08 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Mar 6, 2025, 3:22 AM EST Mar 6, 2025, 4:44 AM EST CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 32abf9a6-eb5a-4b29-9ffc-3721c3ff83ea, published Mar 6, 2025, 11:14 AM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jan 1, 2025, 3:07 AM EST Jan 1, 2025, 3:22 AM EST CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 40,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record f62cc34e-04af-4345-95c7-9b3c16094ea1, published Feb 12, 2025, 12:25 PM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jan 1, 2025, 3:07 AM EST Jan 1, 2025, 3:22 AM EST CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 46126c45-ce84-4ad9-8cc4-92844eb91a10, published Jan 1, 2025, 11:21 AM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Dec 30, 2024, 8:30 AM EST Dec 30, 2024, 8:45 AM EST CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 10,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 4757bb94-3b06-4b6c-b00b-3076b8102270, published Jan 13, 2025, 1:36 PM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Dec 30, 2024, 8:27 AM EST Dec 30, 2024, 8:45 AM EST CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record c5327308-0039-4beb-a72d-749f71e94510, published Dec 30, 2024, 11:25 AM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Dec 11, 2024, 2:45 PM EST Dec 11, 2024, 4:15 PM EST CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 560,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record c2ff1bdf-fd12-49e1-b682-aeceea69d61b, published Jan 13, 2025, 1:38 PM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Dec 11, 2024, 2:45 PM EST Dec 11, 2024, 4:15 PM EST CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 56,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record bdc3857d-dfa7-413d-afc1-1979354e86ac, published Jan 13, 2025, 1:30 PM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Dec 11, 2024, 2:37 PM EST Dec 11, 2024, 4:15 PM EST CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record f2adaf64-a0bf-414a-99af-2719f30fea01, published Dec 12, 2024, 3:58 PM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 18, 2024, 8:18 AM EDT Aug 18, 2024, 8:28 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 10,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 3d7a4d22-a441-4abb-b86b-d685a6397e24, published Sep 4, 2024, 9:12 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 18, 2024, 7:52 AM EDT Aug 18, 2024, 8:28 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 39be428b-c210-4dac-8ffd-ca1529b13205, published Aug 19, 2024, 9:44 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 15, 2024, 4:45 PM EDT Aug 15, 2024, 5:15 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 20,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record d89806bc-3207-4813-a9e8-8986fdb5016d, published Sep 4, 2024, 7:26 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 15, 2024, 4:38 PM EDT Aug 15, 2024, 5:15 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 5ba9eca9-1e5c-43fb-86c4-080e17874041, published Aug 15, 2024, 5:37 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 4, 2024, 5:15 PM EDT Aug 4, 2024, 5:45 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 150,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 199b1974-5d91-48a4-9bbf-6db85a9c6def, published Sep 4, 2024, 7:21 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Aug 4, 2024, 5:08 PM EDT Aug 4, 2024, 5:45 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 3420d4a8-195f-41de-ba8c-069e665cb0b2, published Aug 5, 2024, 10:03 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 31, 2024, 12:00 PM EDT Jul 31, 2024, 12:30 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 830,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record efe4f5a7-6a4d-4088-b8dc-5eef9e31d872, published Aug 13, 2024, 3:09 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 31, 2024, 11:57 AM EDT Jul 31, 2024, 12:30 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record db4e7872-abab-4717-8a21-25be7cc39701, published Jul 31, 2024, 2:56 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 31, 2024, 11:50 AM EDT Jul 31, 2024, 12:05 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO) 104,000 gallons CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record b4682fff-9d6c-497e-95e0-1d65bdb9715f, published Aug 16, 2024, 8:11 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jul 31, 2024, 11:50 AM EDT Jul 31, 2024, 12:05 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO)Earlier version volume not reported CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 9581a219-a113-445f-854e-0e51bd9fa8be, published Aug 1, 2024, 10:27 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 27, 2024, 12:15 AM EDT Jun 27, 2024, 12:20 AM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO) 26,000 gallons CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 9e94ff6b-d916-4819-97ed-0801561d7368, published Jul 12, 2024, 9:51 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 27, 2024, 12:15 AM EDT Jun 27, 2024, 12:45 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 780,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record c0ef9a7d-13af-4798-9584-9e4662dee66f, published Jul 10, 2024, 2:46 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 27, 2024, 12:15 AM EDT Jun 27, 2024, 12:45 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 78,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record b0c86c3b-5fff-4d37-ad95-49881eb649a2, published Jul 10, 2024, 2:36 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 27, 2024, 12:15 AM EDT Jun 27, 2024, 12:20 AM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO)Earlier version volume not reported CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record b05c7762-45b8-495c-ba4e-57c240d1602b, published Jun 28, 2024, 8:43 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 27, 2024, 12:12 AM EDT Jun 27, 2024, 12:45 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record fecb8a66-90c2-43cc-bf10-63ac05cc6405, published Jun 27, 2024, 2:44 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 20, 2024, 9:40 PM EDT Jun 20, 2024, 9:45 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO) 26,000 gallons CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 218f1af5-52de-4041-8f5f-a3383dc42e8e, published Jul 12, 2024, 9:45 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 20, 2024, 9:40 PM EDT Jun 20, 2024, 10:19 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 160,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 8c1d98d1-3765-409c-a80d-7b89a3bb5f53, published Jul 10, 2024, 3:45 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 20, 2024, 9:40 PM EDT Jun 20, 2024, 9:45 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO)Earlier version volume not reported CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 4a7cb712-5318-493d-8de9-330685cd0615, published Jun 21, 2024, 2:00 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 14, 2024, 1:35 PM EDT Jun 14, 2024, 2:05 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO) 396,000 gallons CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record d5e8de66-4a35-4faa-9d96-b7760b060abc, published Jul 12, 2024, 9:43 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Jun 14, 2024, 1:35 PM EDT Jun 14, 2024, 2:05 PM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO)Earlier version volume not reported CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 4525dcce-aa6b-40e6-a0b0-fd3bdea78b7b, published Jun 21, 2024, 2:02 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 30, 2024, 9:48 AM EDT May 30, 2024, 9:48 AM EDT MASSACHUSETTS WATER RESOURCES AUTHORITY MWR003 165 FT WEST OF ALEWIFE STATION ACCESS RD Combined sewer overflow (CSO) 0 gallons MASSACHUSETTS WATER RESOURCES AUTHORITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record a2efcaef-3c89-4f48-8ee8-1f40bae82621, published Jun 3, 2024, 9:00 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 30, 2024, 9:30 AM EDT May 30, 2024, 10:30 AM EDT CITY OF CAMBRIDGE CAM401B INT MASS AVE & ALEWIFE BK Combined sewer overflow (CSO) 15,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record e19c80eb-ed61-4596-b129-0f3f3f230e77, published Jun 12, 2024, 2:12 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 30, 2024, 9:25 AM EDT May 30, 2024, 10:05 AM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO) 290,000 gallons CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 41685791-a6c0-44d7-9330-77b3f252a88d, published Jun 12, 2024, 9:11 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 30, 2024, 9:25 AM EDT May 30, 2024, 10:05 AM EDT CITY OF SOMERVILLE SOM001A 100 FT BEYOND END OF MATIGNON RD Combined sewer overflow (CSO)Earlier version volume not reported CITY OF SOMERVILLE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 4b4a7d07-84f9-49d7-a276-a7deeb091621, published May 31, 2024, 9:35 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 30, 2024, 8:30 AM EDT May 30, 2024, 10:45 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 2.18 million gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record bf41d561-c8da-4391-9782-0d792269db64, published Jun 12, 2024, 2:07 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 27, 2024, 11:22 PM EDT May 27, 2024, 11:22 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 0 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record f185b147-6b85-4604-96f2-9e8184237330, published Jun 12, 2024, 1:54 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 27, 2024, 11:22 PM EDT May 27, 2024, 11:22 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record b6fea55e-e22c-47fe-85e9-7cc349c05472, published May 28, 2024, 6:17 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 8, 2024, 11:37 AM EDT May 8, 2024, 11:54 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO)Earlier version volume not reported CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record e805f33c-10c0-433d-a042-5e42d190b052, published May 8, 2024, 1:17 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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May 8, 2024, 11:34 AM EDT May 8, 2024, 11:54 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 60,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 0e0d09ec-48de-415d-bc83-aa307d557011, published Jun 12, 2024, 1:58 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Apr 12, 2024, 9:03 AM EDT Apr 12, 2024, 9:23 AM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 20,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 1815cc08-fae9-4e4c-b682-93e11bdd0964, published Jan 30, 2025, 5:46 PM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Mar 23, 2024, 8:22 PM EDT Mar 23, 2024, 9:18 PM EDT CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 100,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 841690f9-2b82-45f7-ac0f-b765114b348e, published Jan 30, 2025, 5:39 PM EST, retrieved 2026-11-02 10:58 UTC · Read the original notice
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Mar 7, 2024, 2:27 AM EST Mar 7, 2024, 2:37 AM EST CITY OF CAMBRIDGE CAM401A MBTA 97 CAMBRIDGE PARK DR Combined sewer overflow (CSO) 10,000 gallons CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record da606a2b-b8a1-4359-933f-aac46f8c4e3e, published Apr 11, 2024, 4:49 PM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice
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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: City of Cambridge DPW, City of Somerville DPW, Massachusetts Water Resources Authority.

Boat launches

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

Sources covering this water

222 records linked to this water. Updated Nov 2, 2026, 11:21 AM EST.