City of Cambridge DPW
CSO · Massachusetts · Cambridge
- NPDES permit
- MA0101974
- Outfalls
- 7 with coordinates in the registry
- Receiving waters
- ALEWIFE BROOK; CHARLES RIVER; CHARLES RIVER BASIN
- Tracked waters
- Charles River, MA
- Events tracked
- 135 discharges · latest Oct 11, 2026, 7:57 PM EDT
- Volume reported
- 69,291,000 gallons across the 129 discharges that give a volume (6 without one)
Source: discharger record from the project's research and EPA ECHO (dischargers.json); counts from the 135 event records below, as of 2026-11-02 11:56 UTC.
How it tells the public
Cambridge email list 'Combined Sewer Overflow Alerts' at https://www.cambridgema.gov/Subscribe; CSO report page https://www.cambridgema.gov/csoReport. MassDEP portal: 251 rows, latest 2026-10-11.
Source: the project's research on each operator's notification channel (research/<state>/dischargers.json), checked by fetching the operator's pages.
Outfalls
Source: water outlines from OpenBoatLaunch and OpenStreetMap contributors (ODbL); outfalls from EPA ECHO and the state outfall layers; modeled reaches computed by DirtyWaterWatch from USGS NLDI, NHDPlus and the nearest USGS gauge (Jobson 1996); basemap OpenFreeMap and OpenMapTiles.
7 outfalls in the registry
- 001 BETW FOCH ST AND MURRAY HILL RD · CSO · Little River · not on a tracked water
- 002 INT MASS AVE & ALEWIFE BK · CSO · Little River · not on a tracked water
- 005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL · CSO · Charles River
- 007 INT OF HAWTHORNE & MEMORIAL DR · CSO · Charles River
- 017 NEAR ROWLAND INSTITUTE · CSO · Charles River
- 401A MBTA 97 CAMBRIDGE PARK DR · CSO · Little River · not on a tracked water
- 401B INT MASS AVE & ALEWIFE BK · CSO · Little River · not on a tracked water
Source: EPA ECHO CSO outfall inventory matched to waters (data/outfalls-ne.json).
Event history
| Start | End | Water | Outfall | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|
| Oct 11, 2026, 7:57 PM EDT | ended, time not reported | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b8897e69-76ab-43f4-85a6-37caf45a316f, published Oct 13, 2026, 10:10 AM EDT, retrieved 2026-11-02 11:54 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Oct 11, 2026, 7:57 PM EDT · Map |
| Jul 29, 2026, 11:45 PM EDT | Jul 30, 2026, 12:30 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 20,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a8711c37-ecca-45ba-9d4c-3e9ee8dd1243, published Aug 14, 2026, 3:30 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 29, 2026, 11:45 PM EDT · Map |
| Jul 29, 2026, 11:45 PM EDT | Jul 30, 2026, 12:30 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b16b77f0-4533-4294-bd24-28883fe57ff8, published Jul 30, 2026, 9:21 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 29, 2026, 11:45 PM EDT · Map |
| Jul 29, 2026, 11:15 AM EDT | Jul 29, 2026, 11:45 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 270,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b08e712b-521a-40a4-bedc-6d24459b31ed, published Aug 14, 2026, 3:29 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 29, 2026, 11:15 AM EDT · Map |
| Jul 29, 2026, 11:00 AM EDT | Jul 29, 2026, 11:45 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c026c4d8-0b71-4e0e-8c04-21ad7e8b08e6, published Jul 30, 2026, 9:17 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 29, 2026, 11:00 AM EDT · Map |
| Jul 22, 2026, 4:39 PM EDT | Jul 22, 2026, 4:45 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f4af0303-3be4-46cf-8448-7f22df019947, published Jul 23, 2026, 9:35 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 22, 2026, 4:39 PM EDT · Map |
| Jul 22, 2026, 4:30 PM EDT | Jul 22, 2026, 4:45 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 140,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d4323897-9b47-489d-944a-867510db0c19, published Aug 14, 2026, 3:07 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 22, 2026, 4:30 PM EDT · Map |
| Jul 22, 2026, 4:22 PM EDT | Jul 22, 2026, 5:00 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 00db6421-c38c-48fb-ac8b-8dfee3ebc599, published Jul 23, 2026, 9:34 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 22, 2026, 4:22 PM EDT · Map |
| Jul 22, 2026, 4:15 PM EDT | Jul 22, 2026, 5:00 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 1.83 million gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6efecf5d-1a90-430e-a728-1eb753af2372, published Aug 14, 2026, 3:05 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 22, 2026, 4:15 PM EDT · Map |
| Jul 21, 2026, 6:00 PM EDT | Jul 21, 2026, 6:30 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6a1ae207-6861-4856-87b9-25a1bd1ca60d, published Aug 14, 2026, 3:03 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 21, 2026, 6:00 PM EDT · Map |
| Jul 21, 2026, 6:00 PM EDT | Jul 21, 2026, 6:30 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 12af0051-f5a9-4c7c-a3d0-089fe5306c9c, published Jul 23, 2026, 9:32 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 21, 2026, 6:00 PM EDT · Map |
| Jul 21, 2026, 5:45 PM EDT | Jul 21, 2026, 8:45 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 14.1 million gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 62dd6ccf-582d-4dfa-ba9e-0931cfc184aa, published Aug 14, 2026, 2:57 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 21, 2026, 5:45 PM EDT · Map |
| Jul 21, 2026, 5:45 PM EDT | Jul 21, 2026, 8:45 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1a665188-535a-4307-b94c-1a0e04705cb8, published Jul 22, 2026, 11:14 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 21, 2026, 5:45 PM EDT · Map |
| Jul 7, 2026, 6:38 PM EDT | Jul 7, 2026, 7:08 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record fbefa9c3-326a-430b-b3af-24802058c806, published Jul 8, 2026, 8:18 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 7, 2026, 6:38 PM EDT · Map |
| Jul 7, 2026, 6:27 PM EDT | Jul 7, 2026, 7:08 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 170,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6a6f2576-254e-4cef-af75-2e6bcde66dee, published Aug 14, 2026, 12:19 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 7, 2026, 6:27 PM EDT · Map |
| Jul 7, 2026, 6:15 PM EDT | Jul 7, 2026, 6:30 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a139ff63-76e8-4585-ad5a-5a29cb2eb3dd, published Aug 14, 2026, 2:49 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 7, 2026, 6:15 PM EDT · Map |
| Jul 7, 2026, 6:10 PM EDT | Jul 7, 2026, 6:30 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3b6a0b96-98c0-4439-8e4a-434ade2c5ff2, published Jul 8, 2026, 8:26 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 7, 2026, 6:10 PM EDT · Map |
| Jul 4, 2026, 7:13 PM EDT | Jul 4, 2026, 7:30 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6c6833a1-926c-405f-8ddc-e0d4a04d12a4, published Jul 6, 2026, 10:05 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 4, 2026, 7:13 PM EDT · Map |
| Jul 4, 2026, 7:00 PM EDT | Jul 4, 2026, 7:30 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 590,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record cdc6d42a-0f49-4d6a-ad85-a25a0ed62e34, published Aug 14, 2026, 12:16 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jul 4, 2026, 7:00 PM EDT · Map |
| Jun 18, 2026, 7:08 PM EDT | Jun 18, 2026, 7:45 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d6e51c07-d11d-46ec-b5a5-74bd08321aeb, published Jun 19, 2026, 9:22 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jun 18, 2026, 7:08 PM EDT · Map |
| Jun 18, 2026, 6:50 PM EDT | Jun 18, 2026, 7:00 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a1097523-a823-4686-bb1a-3aae2dd0372b, published Jun 18, 2026, 7:57 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jun 18, 2026, 6:50 PM EDT · Map |
| Jun 18, 2026, 6:45 PM EDT | Jun 18, 2026, 7:45 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 290,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d5711218-8542-4c3e-91ff-351ebbfd469a, published Jul 15, 2026, 2:10 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jun 18, 2026, 6:45 PM EDT · Map |
| Jun 18, 2026, 6:45 PM EDT | Jun 18, 2026, 7:00 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4cf8294c-5957-4822-8700-48f61be6669b, published Jul 15, 2026, 2:07 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF CAMBRIDGE, Jun 18, 2026, 6:45 PM EDT · Map |
| Oct 22, 2025, 8:54 AM EDT | Oct 22, 2025, 8:54 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 0 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 44748008-f532-4fb5-93f6-61b7eb37253a, published Nov 18, 2025, 9:11 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 22, 2025, 8:54 AM EDT | Oct 22, 2025, 8:54 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a599c8ff-e6a8-41cb-8439-cad90050da02, published Oct 22, 2025, 12:29 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 20, 2025, 11:20 AM EDT | Oct 20, 2025, 11:40 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 210,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4ceec3da-05c9-431a-ab72-546e4842c9f7, published Nov 14, 2025, 12:39 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 20, 2025, 11:17 AM EDT | Oct 20, 2025, 11:17 AM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 0 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c5176dc0-79c5-4be3-a641-b882b5269b5d, published Nov 18, 2025, 9:10 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 20, 2025, 11:17 AM EDT | Oct 20, 2025, 11:17 AM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c5255d9b-f2dc-4bd6-8cf0-54cf304ed7a5, published Oct 20, 2025, 4:20 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 20, 2025, 11:15 AM EDT | Oct 20, 2025, 11:40 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 9d208b5b-f124-4997-b8eb-4e31c163d0ac, published Oct 20, 2025, 4:19 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2025, 9:15 AM EDT | Oct 8, 2025, 9:30 AM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 50,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 72f88ffd-b26f-41de-96b3-3c8a3c48b5ec, published Nov 14, 2025, 12:36 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2025, 9:15 AM EDT | Oct 8, 2025, 10:00 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401B INT MASS AVE & ALEWIFE BK | Combined sewer overflow | 30,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ced5d58b-993c-483f-b63d-e17168d27075, published Nov 14, 2025, 12:34 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2025, 9:05 AM EDT | Oct 8, 2025, 10:00 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401B INT MASS AVE & ALEWIFE BK | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 883490d8-9921-4b7c-8fe6-ce282aa26ad2, published Oct 8, 2025, 5:06 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2025, 9:00 AM EDT | Oct 8, 2025, 9:30 AM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b490290d-6ef5-4f0d-9d88-7b5ef0fda1d8, published Oct 8, 2025, 5:06 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2025, 8:45 AM EDT | Oct 8, 2025, 9:30 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 2.14 million gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 959bbe4c-2c0d-412c-8cd7-acc0e661317a, published Nov 14, 2025, 12:32 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2025, 8:45 AM EDT | Oct 8, 2025, 9:30 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2755cfdb-bef6-40eb-8a8f-e7bd9f6ec61b, published Oct 8, 2025, 5:06 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 18, 2025, 3:15 AM EDT | Sep 18, 2025, 3:45 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6e54ab42-5395-46a0-b9b5-da4d1baa4289, published Oct 14, 2025, 3:59 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 18, 2025, 3:15 AM EDT | Sep 18, 2025, 3:45 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4ea9dbce-5afe-40e6-b129-aff6133a7513, published Sep 19, 2025, 9:28 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 6, 2025, 6:20 PM EDT | Sep 6, 2025, 6:45 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 23812d25-338c-4284-9e4e-3befe8f063d4, published Sep 9, 2025, 11:15 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 6, 2025, 6:15 PM EDT | Sep 6, 2025, 6:45 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 90,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 261a8f5c-2f26-4b5e-a253-4fd1ef5258e4, published Oct 14, 2025, 3:51 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 6, 2025, 6:15 PM EDT | Sep 6, 2025, 6:30 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401B INT MASS AVE & ALEWIFE BK | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record aa129dd4-e17e-4ec1-8e16-b0af70041544, published Oct 14, 2025, 3:50 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 6, 2025, 6:15 PM EDT | Sep 6, 2025, 6:30 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401B INT MASS AVE & ALEWIFE BK | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7f3ac47a-4b52-46a2-b3b0-56c09b574cda, published Sep 9, 2025, 11:20 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 6, 2025, 5:45 PM EDT | Sep 6, 2025, 7:15 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 1.96 million gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 80f8d2c1-9d71-4b1e-a8f6-5feb2df910ad, published Oct 14, 2025, 3:55 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 6, 2025, 5:30 PM EDT | Sep 6, 2025, 7:15 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 150a93b8-d312-46a3-a07f-9dd53c3c699a, published Sep 19, 2025, 9:51 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 29, 2025, 3:00 PM EDT | Aug 29, 2025, 3:10 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 340,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record e9d1db74-af9b-4385-9e8f-a55137befb22, published Sep 15, 2025, 9:12 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 29, 2025, 2:45 PM EDT | Aug 29, 2025, 3:10 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 456684cc-5f68-45dd-9f51-67393987202d, published Sep 2, 2025, 8:57 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 14, 2025, 6:50 PM EDT | Aug 14, 2025, 7:15 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3612819f-f04e-44ae-9dea-e05ede260d13, published Aug 15, 2025, 8:56 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 14, 2025, 6:45 PM EDT | Aug 14, 2025, 7:15 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 1.22 million gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0c9eb75c-0d96-4372-a808-474956a00528, published Sep 15, 2025, 9:10 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 14, 2025, 6:40 PM EDT | Aug 14, 2025, 6:55 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 5189fc7b-ba12-418d-afd8-036b90aa8f73, published Aug 15, 2025, 8:55 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 14, 2025, 6:30 PM EDT | Aug 14, 2025, 6:55 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 1.27 million gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2153cc1b-3c6c-4b78-a9a7-3feada9186ed, published Sep 15, 2025, 9:10 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 31, 2025, 9:00 PM EDT | Jul 31, 2025, 9:15 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 40,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d242cffc-7d24-4a5d-84dc-18b69a6ed4f1, published Aug 14, 2025, 9:54 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 25, 2025, 3:10 PM EDT | Jul 25, 2025, 3:10 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 218bdfea-220f-40b0-87e9-d126d0e59a22, published Jul 28, 2025, 10:34 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 25, 2025, 3:05 PM EDT | Jul 25, 2025, 3:15 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 84497e7a-934d-4344-96fb-3983cb8199e8, published Jul 28, 2025, 10:34 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 25, 2025, 3:00 PM EDT | Jul 25, 2025, 3:15 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 70,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b0cbb9ea-e969-4039-abfa-801153eeff2f, published Aug 14, 2025, 9:51 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 25, 2025, 3:00 PM EDT | Jul 25, 2025, 3:10 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 50,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 5e818d5a-bf17-416e-83f2-5187fda5bbfc, published Aug 14, 2025, 9:49 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 20, 2025, 7:59 PM EDT | Jul 20, 2025, 8:15 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 263634e4-42a3-40c2-ab7b-bad1e3d7a0fd, published Jul 21, 2025, 11:07 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 20, 2025, 7:52 PM EDT | Jul 20, 2025, 8:00 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a2df9dc1-725d-41d7-9373-81738e2968d8, published Jul 21, 2025, 11:06 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 20, 2025, 7:45 PM EDT | Jul 20, 2025, 8:00 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 80,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1f1f1fea-80f0-4c85-96e9-4f89bfe588e7, published Aug 14, 2025, 9:47 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 20, 2025, 7:45 PM EDT | Jul 20, 2025, 8:15 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 170,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f4ce4ada-a4a2-42da-8856-16d2ceab20e8, published Aug 14, 2025, 9:46 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 8, 2025, 11:24 PM EDT | Jul 8, 2025, 11:20 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 5042a7e8-6e44-42aa-9d77-a5cb8614596d, published Jul 10, 2025, 10:31 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 8, 2025, 11:15 PM EDT | Jul 8, 2025, 11:20 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4a558b29-773f-43dc-8d0d-8c829424f841, published Aug 12, 2025, 8:56 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jun 7, 2025, 5:30 PM EDT | Jun 7, 2025, 6:00 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 330,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 25256bdd-db0c-4210-84e2-91f9c48314cd, published Jul 14, 2025, 9:54 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jun 7, 2025, 5:23 PM EDT | Jun 7, 2025, 6:00 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 08a0531f-0687-4007-85bb-2403656c0576, published Jun 9, 2025, 11:05 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 22, 2025, 7:00 PM EDT | May 22, 2025, 10:15 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 1.35 million gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2db3bc17-1888-4719-b546-0edc75d65d75, published Jun 13, 2025, 11:45 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 22, 2025, 6:38 PM EDT | May 22, 2025, 10:15 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record bc481c6d-4038-447e-b1f3-c94fd0974091, published May 23, 2025, 2:06 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 6, 2025, 6:15 PM EDT | May 6, 2025, 6:30 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 160,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d6822169-0dfb-4bf1-9f5f-57ccbb027a79, published Jun 13, 2025, 11:42 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 6, 2025, 6:13 PM EDT | May 6, 2025, 6:30 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 045480de-b364-46b6-b2e2-6319fcb0509e, published May 7, 2025, 10:16 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 1, 2025, 12:45 AM EDT | Apr 1, 2025, 1:15 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 350,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 10135e3c-902b-467c-b49b-4bfac358e6e8, published May 12, 2025, 3:12 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 1, 2025, 12:38 AM EDT | Apr 1, 2025, 1:15 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d981f2ee-ed74-43df-b277-428164459823, published Apr 1, 2025, 12:28 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 17, 2025, 4:30 AM EDT | Mar 17, 2025, 4:45 AM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f4531ed4-1264-4a36-bf23-28aa0b69c82f, published Apr 14, 2025, 3:13 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 17, 2025, 4:13 AM EDT | Mar 17, 2025, 4:45 AM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d1d2d874-c3fd-4045-a391-49970f67e80d, published Mar 17, 2025, 12:43 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 17, 2025, 4:00 AM EDT | Mar 17, 2025, 4:45 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 1.02 million gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 29268782-a3b6-403a-a685-7b0463b9d5c6, published Apr 14, 2025, 3:10 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 17, 2025, 3:53 AM EDT | Mar 17, 2025, 4:45 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 5a95ef45-ee5d-4bde-bd57-005cb7c924e3, published Mar 17, 2025, 12:42 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 6, 2025, 4:14 AM EST | Mar 6, 2025, 4:44 AM EST | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 100,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 96267222-6065-43e3-8568-db76f43ff6ac, published Apr 14, 2025, 3:08 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 6, 2025, 3:22 AM EST | Mar 6, 2025, 4:44 AM EST | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 32abf9a6-eb5a-4b29-9ffc-3721c3ff83ea, published Mar 6, 2025, 11:14 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jan 1, 2025, 3:07 AM EST | Jan 1, 2025, 3:22 AM EST | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 40,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f62cc34e-04af-4345-95c7-9b3c16094ea1, published Feb 12, 2025, 12:25 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jan 1, 2025, 3:07 AM EST | Jan 1, 2025, 3:22 AM EST | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 46126c45-ce84-4ad9-8cc4-92844eb91a10, published Jan 1, 2025, 11:21 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 30, 2024, 8:30 AM EST | Dec 30, 2024, 8:45 AM EST | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4757bb94-3b06-4b6c-b00b-3076b8102270, published Jan 13, 2025, 1:36 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 30, 2024, 8:27 AM EST | Dec 30, 2024, 8:45 AM EST | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c5327308-0039-4beb-a72d-749f71e94510, published Dec 30, 2024, 11:25 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 11, 2024, 2:45 PM EST | Dec 11, 2024, 4:15 PM EST | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 560,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c2ff1bdf-fd12-49e1-b682-aeceea69d61b, published Jan 13, 2025, 1:38 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 11, 2024, 2:45 PM EST | Dec 11, 2024, 4:15 PM EST | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 56,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record bdc3857d-dfa7-413d-afc1-1979354e86ac, published Jan 13, 2025, 1:30 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 11, 2024, 2:37 PM EST | Dec 11, 2024, 4:15 PM EST | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f2adaf64-a0bf-414a-99af-2719f30fea01, published Dec 12, 2024, 3:58 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 18, 2024, 8:18 AM EDT | Aug 18, 2024, 8:28 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3d7a4d22-a441-4abb-b86b-d685a6397e24, published Sep 4, 2024, 9:12 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 18, 2024, 7:52 AM EDT | Aug 18, 2024, 8:28 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 39be428b-c210-4dac-8ffd-ca1529b13205, published Aug 19, 2024, 9:44 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 15, 2024, 4:45 PM EDT | Aug 15, 2024, 5:15 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 20,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d89806bc-3207-4813-a9e8-8986fdb5016d, published Sep 4, 2024, 7:26 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 15, 2024, 4:38 PM EDT | Aug 15, 2024, 5:15 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 5ba9eca9-1e5c-43fb-86c4-080e17874041, published Aug 15, 2024, 5:37 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 4, 2024, 5:15 PM EDT | Aug 4, 2024, 5:45 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 150,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 199b1974-5d91-48a4-9bbf-6db85a9c6def, published Sep 4, 2024, 7:21 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 4, 2024, 5:08 PM EDT | Aug 4, 2024, 5:45 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3420d4a8-195f-41de-ba8c-069e665cb0b2, published Aug 5, 2024, 10:03 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 31, 2024, 12:15 PM EDT | Jul 31, 2024, 12:30 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 30,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4f6602b0-20bf-4c80-bd79-f41991551410, published Jan 30, 2025, 5:29 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 31, 2024, 12:00 PM EDT | Jul 31, 2024, 12:30 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 830,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record efe4f5a7-6a4d-4088-b8dc-5eef9e31d872, published Aug 13, 2024, 3:09 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 31, 2024, 11:57 AM EDT | Jul 31, 2024, 12:30 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record db4e7872-abab-4717-8a21-25be7cc39701, published Jul 31, 2024, 2:56 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 31, 2024, 11:53 AM EDT | Jul 31, 2024, 12:30 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 40251177-6cbb-4388-8fb5-61bdd8e39829, published Jul 31, 2024, 2:58 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 31, 2024, 11:45 AM EDT | Jul 31, 2024, 12:15 PM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 01b56f97-7aca-4c99-a0d0-b03dfdd3f9c4, published Aug 14, 2024, 11:44 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jun 27, 2024, 12:30 AM EDT | Jun 27, 2024, 12:45 AM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 10,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c7be727c-3912-4067-b539-a9b49231cd36, published Jan 30, 2025, 5:19 PM EST, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jun 27, 2024, 12:30 AM EDT | Jun 27, 2024, 2:00 AM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflow | 20,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4f022dff-dbd1-4d81-952b-3041807cc3cb, published Jul 11, 2024, 3:00 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jun 27, 2024, 12:22 AM EDT | Jun 27, 2024, 2:00 AM EDT | Charles River, MA | CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d81721ba-acc3-43ca-b8a7-9a4bda097409, published Jun 27, 2024, 2:46 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jun 27, 2024, 12:15 AM EDT | Jun 27, 2024, 12:45 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 780,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c0ef9a7d-13af-4798-9584-9e4662dee66f, published Jul 10, 2024, 2:46 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jun 27, 2024, 12:15 AM EDT | Jun 27, 2024, 12:45 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 78,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b0c86c3b-5fff-4d37-ad95-49881eb649a2, published Jul 10, 2024, 2:36 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jun 27, 2024, 12:12 AM EDT | Jun 27, 2024, 12:45 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflowrevised | not reported | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record fecb8a66-90c2-43cc-bf10-63ac05cc6405, published Jun 27, 2024, 2:44 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jun 20, 2024, 9:40 PM EDT | Jun 20, 2024, 10:19 PM EDT | “ALEWIFE BROOK” (not placed) | CAM401A MBTA 97 CAMBRIDGE PARK DR | Combined sewer overflow | 160,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 8c1d98d1-3765-409c-a80d-7b89a3bb5f53, published Jul 10, 2024, 3:45 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 30, 2024, 9:30 AM EDT | May 30, 2024, 10:30 AM EDT | “ALEWIFE BROOK” (not placed) | CAM401B INT MASS AVE & ALEWIFE BK | Combined sewer overflow | 15,000 gal | CITY OF CAMBRIDGE (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record e19c80eb-ed61-4596-b129-0f3f3f230e77, published Jun 12, 2024, 2:12 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
Showing the newest 100 events of 240 events. See them all with filters.
History
- Discharge events, last 12 months12Dec 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; on this discharger's reports
- 2026 season under advisory6.3%May to October; 279 h
Discharge events per month
130 events, Jan 2022 to Nov 2026. Counted from 129 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 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
| Month | Combined sewer overflow | Sanitary sewer overflow | Bypass, blended or other | Total | Counted from | Coverage |
|---|---|---|---|---|---|---|
| Jan 2022 | 0 | 0 | 0 | 0 | No source | |
| Feb 2022 | 0 | 0 | 0 | 0 | No source | |
| Mar 2022 | 0 | 0 | 0 | 0 | No source | |
| Apr 2022 | 0 | 0 | 0 | 0 | No source | |
| May 2022 | 0 | 0 | 0 | 0 | No source | |
| Jun 2022 | 0 | 0 | 0 | 0 | Partly covered or sparse source | |
| Jul 2022 | 0 | 0 | 0 | 0 | ||
| Aug 2022 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Sep 2022 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Oct 2022 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Nov 2022 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Dec 2022 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Jan 2023 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Feb 2023 | 0 | 0 | 0 | 0 | ||
| Mar 2023 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Apr 2023 | 0 | 0 | 0 | 0 | ||
| May 2023 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Jun 2023 | 0 | 0 | 0 | 0 | ||
| Jul 2023 | 16 | 0 | 0 | 16 | Verified or annual reports | |
| Aug 2023 | 11 | 0 | 0 | 11 | Verified or annual reports | |
| Sep 2023 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Oct 2023 | 0 | 0 | 0 | 0 | ||
| Nov 2023 | 0 | 0 | 0 | 0 | ||
| Dec 2023 | 8 | 0 | 0 | 8 | Verified or annual reports | |
| Jan 2024 | 9 | 0 | 0 | 9 | Verified or annual reports | |
| Feb 2024 | 0 | 0 | 0 | 0 | ||
| Mar 2024 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Apr 2024 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| May 2024 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Jun 2024 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Jul 2024 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Aug 2024 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Sep 2024 | 0 | 0 | 0 | 0 | ||
| Oct 2024 | 0 | 0 | 0 | 0 | ||
| Nov 2024 | 0 | 0 | 0 | 0 | ||
| Dec 2024 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Jan 2025 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Feb 2025 | 0 | 0 | 0 | 0 | ||
| Mar 2025 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Apr 2025 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| May 2025 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Jun 2025 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Jul 2025 | 6 | 0 | 0 | 6 | Verified or annual reports | |
| Aug 2025 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Sep 2025 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Oct 2025 | 6 | 0 | 0 | 6 | Verified or annual reports | |
| Nov 2025 | 0 | 0 | 0 | 0 | ||
| Dec 2025 | 0 | 0 | 0 | 0 | ||
| Jan 2026 | 0 | 0 | 0 | 0 | ||
| Feb 2026 | 0 | 0 | 0 | 0 | ||
| Mar 2026 | 0 | 0 | 0 | 0 | ||
| Apr 2026 | 0 | 0 | 0 | 0 | ||
| May 2026 | 0 | 0 | 0 | 0 | ||
| Jun 2026 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Jul 2026 | 9 | 0 | 0 | 9 | Verified or annual reports | |
| Aug 2026 | 0 | 0 | 0 | 0 | ||
| Sep 2026 | 0 | 0 | 0 | 0 | ||
| Oct 2026 | 1 | 0 | 0 | 1 | Public notices (no report yet) | |
| Nov 2026 | 0 | 0 | 0 | 0 |
Hours under advisory per month
Hours this discharger's reports put a water under an advisory, by the map's red rules.
- Advisory in effect
- 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. Official beach and cyanobacteria advisories are counted on water pages only. 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
| Month | Hours under advisory | From discharge windows | Hours in month | Coverage |
|---|---|---|---|---|
| Jan 2022 | 0 | 0 | 744 | No source |
| Feb 2022 | 0 | 0 | 672 | No source |
| Mar 2022 | 0 | 0 | 744 | No source |
| Apr 2022 | 0 | 0 | 720 | No source |
| May 2022 | 0 | 0 | 744 | No source |
| Jun 2022 | 0 | 0 | 720 | Partly covered or sparse source |
| Jul 2022 | 0 | 0 | 744 | |
| Aug 2022 | 97 | 97 | 744 | |
| Sep 2022 | 48 | 48 | 720 | |
| Oct 2022 | 97 | 97 | 744 | |
| Nov 2022 | 53 | 53 | 720 | |
| Dec 2022 | 92 | 92 | 744 | |
| Jan 2023 | 50 | 50 | 744 | |
| Feb 2023 | 0 | 0 | 672 | |
| Mar 2023 | 103 | 103 | 744 | |
| Apr 2023 | 0 | 0 | 720 | |
| May 2023 | 99 | 99 | 744 | |
| Jun 2023 | 0 | 0 | 720 | |
| Jul 2023 | 297 | 297 | 744 | |
| Aug 2023 | 235 | 235 | 744 | |
| Sep 2023 | 110 | 110 | 720 | |
| Oct 2023 | 0 | 0 | 744 | |
| Nov 2023 | 0 | 0 | 720 | |
| Dec 2023 | 100 | 100 | 744 | |
| Jan 2024 | 103 | 103 | 744 | |
| Feb 2024 | 0 | 0 | 696 | |
| Mar 2024 | 147 | 147 | 744 | |
| Apr 2024 | 48 | 48 | 720 | |
| May 2024 | 136 | 136 | 744 | |
| Jun 2024 | 109 | 109 | 720 | |
| Jul 2024 | 12 | 12 | 744 | |
| Aug 2024 | 182 | 182 | 744 | |
| Sep 2024 | 0 | 0 | 720 | |
| Oct 2024 | 0 | 0 | 744 | |
| Nov 2024 | 0 | 0 | 720 | |
| Dec 2024 | 89 | 89 | 744 | |
| Jan 2025 | 51 | 51 | 744 | |
| Feb 2025 | 0 | 0 | 672 | |
| Mar 2025 | 97 | 97 | 744 | |
| Apr 2025 | 49 | 49 | 720 | |
| May 2025 | 100 | 100 | 744 | |
| Jun 2025 | 49 | 49 | 720 | |
| Jul 2025 | 148 | 148 | 744 | |
| Aug 2025 | 142 | 142 | 744 | |
| Sep 2025 | 98 | 98 | 720 | |
| Oct 2025 | 143 | 143 | 744 | |
| Nov 2025 | 0 | 0 | 720 | |
| Dec 2025 | 0 | 0 | 744 | |
| Jan 2026 | 0 | 0 | 744 | |
| Feb 2026 | 0 | 0 | 672 | |
| Mar 2026 | 0 | 0 | 744 | |
| Apr 2026 | 0 | 0 | 720 | |
| May 2026 | 0 | 0 | 744 | |
| Jun 2026 | 49 | 49 | 720 | |
| Jul 2026 | 229 | 229 | 744 | |
| Aug 2026 | 1 | 1 | 744 | |
| Sep 2026 | 0 | 0 | 720 | |
| Oct 2026 | 0 | 0 | 744 | |
| Nov 2026 | 0 | 0 | 32 |
Days with a discharge per month
A day counts when any counted discharge was under way on it (start to reported end, local time); an event with no end counts its start day.
- No source
- Partly covered or sparse source
No source covers 2022-01 to 2022-05.
Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.
Show table
| Month | Days with a discharge | Coverage |
|---|---|---|
| Jan 2022 | 0 | No source |
| Feb 2022 | 0 | No source |
| Mar 2022 | 0 | No source |
| Apr 2022 | 0 | No source |
| May 2022 | 0 | No source |
| Jun 2022 | 0 | Partly covered or sparse source |
| Jul 2022 | 0 | |
| Aug 2022 | 2 | |
| Sep 2022 | 1 | |
| Oct 2022 | 2 | |
| Nov 2022 | 2 | |
| Dec 2022 | 1 | |
| Jan 2023 | 1 | |
| Feb 2023 | 0 | |
| Mar 2023 | 2 | |
| Apr 2023 | 0 | |
| May 2023 | 3 | |
| Jun 2023 | 0 | |
| Jul 2023 | 6 | |
| Aug 2023 | 5 | |
| Sep 2023 | 2 | |
| Oct 2023 | 0 | |
| Nov 2023 | 0 | |
| Dec 2023 | 2 | |
| Jan 2024 | 2 | |
| Feb 2024 | 0 | |
| Mar 2024 | 4 | |
| Apr 2024 | 1 | |
| May 2024 | 3 | |
| Jun 2024 | 2 | |
| Jul 2024 | 1 | |
| Aug 2024 | 3 | |
| Sep 2024 | 0 | |
| Oct 2024 | 0 | |
| Nov 2024 | 0 | |
| Dec 2024 | 2 | |
| Jan 2025 | 1 | |
| Feb 2025 | 0 | |
| Mar 2025 | 2 | |
| Apr 2025 | 1 | |
| May 2025 | 2 | |
| Jun 2025 | 1 | |
| Jul 2025 | 4 | |
| Aug 2025 | 2 | |
| Sep 2025 | 2 | |
| Oct 2025 | 3 | |
| Nov 2025 | 0 | |
| Dec 2025 | 0 | |
| Jan 2026 | 0 | |
| Feb 2026 | 0 | |
| Mar 2026 | 0 | |
| Apr 2026 | 0 | |
| May 2026 | 0 | |
| Jun 2026 | 1 | |
| Jul 2026 | 6 | |
| Aug 2026 | 0 | |
| Sep 2026 | 0 | |
| Oct 2026 | 1 | |
| Nov 2026 | 0 |
Reported volume per year
Gallons, summed from the 129 events that gave a number (1 did not).
- Partly covered or sparse source
1 of 130 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
| Year | Gallons | Events with a number | Events without | Coverage |
|---|---|---|---|---|
| 2022 | 490,000 | 10 | 0 | Partly covered or sparse source |
| 2023 | 23,372,000 | 48 | 0 | |
| 2024 | 16,879,000 | 33 | 0 | |
| 2025 | 11,110,000 | 27 | 0 | |
| 2026 | 17,440,000 | 11 | 1 |
Hours under advisory per year
Hours under advisory each year; 2026 to date.
- Advisory in effect
- Partly covered or 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. Official beach and cyanobacteria advisories are counted on water pages only.
Source: MassDEP sewage notification portal. Covered 2022-06-30 to 2026-11-02.
Show table
| Year | Hours under advisory | Share of the year | Coverage |
|---|---|---|---|
| 2022 | 387 | 4.4% | Partly covered or sparse source |
| 2023 | 994 | 11.3% | |
| 2024 | 826 | 9.4% | |
| 2025 | 876 | 10.0% | |
| 2026 | 279 | 3.8% |
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
| Month | Events | Years of records |
|---|---|---|
| Jan | 11 | 4 |
| Feb | 0 | 4 |
| Mar | 11 | 4 |
| Apr | 2 | 4 |
| May | 11 | 4 |
| Jun | 8 | 5 |
| Jul | 34 | 5 |
| Aug | 20 | 5 |
| Sep | 9 | 5 |
| Oct | 10 | 5 |
| Nov | 2 | 5 |
| Dec | 12 | 4 |
Discharge events by outfall
The 6 outfalls with the most events of 6, 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
| Outfall | Events |
|---|---|
| CAM401A MBTA 97 CAMBRIDGE PARK DR | 74 |
| CAM005 WEST BANK OF CHARLES JUST SE OF MT AUBURN HOSPITAL | 31 |
| CAM401B INT MASS AVE & ALEWIFE BK | 13 |
| CAM017 NEAR ROWLAND INSTITUTE | 5 |
| CAM007 INT OF HAWTHORNE & MEMORIAL DR | 4 |
| CAM001 BETW FOCH ST AND MURRAY HILL RD | 3 |
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