City of Worcester (Quinsigamond Avenue CSO treatment facility)
CSO · Massachusetts · Worcester
- NPDES permit
- MA0102997
- Outfalls
- 1 with coordinates in the registry
- Receiving waters
- MILL BROOK TO BLACKSTONE RIVER
- Tracked waters
- Blackstone River, MA, Lake Quinsigamond, MA, Flint Pond, MA
- Events tracked
- 97 discharges · latest Oct 11, 2026, 7:17 PM EDT
- Volume reported
- 588,786,261 gallons across the 82 discharges that give a volume (15 without one)
Source: discharger record from the project's research and EPA ECHO (dischargers.json); counts from the 97 event records below, as of 2026-11-02 11:56 UTC.
How it tells the public
Not verified. MassDEP portal: 170 rows, latest 2026-10-11; events typed 'CSO - Treated'.
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.
1 outfall in the registry
- 001 QUINSIGAMOND AVENUE · TCS · TO UBWPAD FINAL DSCHGE TO BLACKSTON · 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, 7:17 PM EDT | ongoing (as reported) | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record e8a33adf-dc65-4073-92dd-46fb5d727997, published Oct 11, 2026, 8:23 PM EDT, retrieved 2026-11-02 11:54 UTC · notice | Event: Combined sewer overflow, CITY OF WORCESTER, Oct 11, 2026, 7:17 PM EDT · Map |
| Sep 27, 2026, 8:11 AM EDT | ongoing (as reported) | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3e8870fe-364d-46d5-9eec-fdadb2798677, published Sep 27, 2026, 10:58 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF WORCESTER, Sep 27, 2026, 8:11 AM EDT · Map |
| Aug 7, 2026, 10:39 PM EDT | Aug 8, 2026, 1:09 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 4.9 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 9b08c578-c124-4926-b8a4-07a82e420db1, published Sep 18, 2026, 2:26 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF WORCESTER, Aug 7, 2026, 10:39 PM EDT · Map |
| Aug 7, 2026, 10:39 PM EDT | Aug 8, 2026, 1:09 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d72e2d4b-92b1-4851-8371-9d478c46448c, published Sep 12, 2026, 9:08 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF WORCESTER, Aug 7, 2026, 10:39 PM EDT · Map |
| Jul 29, 2026, 1:24 PM EDT | ended, time not reported | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record e46bbfff-6f3c-4209-9299-9234bb2f0a98, published Jul 30, 2026, 10:06 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF WORCESTER, Jul 29, 2026, 1:24 PM EDT · Map |
| Jul 24, 2026, 5:20 AM EDT | ended, time not reported | Lake Quinsigamond, MA | not stated | Sanitary sewer overflow | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 484950b0-2d74-4213-b58d-f9951958d082, published Jul 24, 2026, 1:32 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Sanitary sewer overflow, CITY OF WORCESTER, Jul 24, 2026, 5:20 AM EDT · Map |
| Jul 7, 2026, 7:36 AM EDT | ongoing (as reported) | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0ce512bc-b101-46e4-90a6-8dde9463c117, published Jul 7, 2026, 8:41 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF WORCESTER, Jul 7, 2026, 7:36 AM EDT · Map |
| Jun 18, 2026, 6:18 PM EDT | Jun 18, 2026, 8:58 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 3.93 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f184d1c4-2d92-4622-b710-1b5b0b6c6cb1, published Jul 24, 2026, 1:29 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF WORCESTER, Jun 18, 2026, 6:18 PM EDT · Map |
| Jun 18, 2026, 6:18 PM EDT | Jun 18, 2026, 8:58 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 07cbb33b-ccc3-4196-8d87-3f676053e551, published Jul 2, 2026, 1:19 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF WORCESTER, Jun 18, 2026, 6:18 PM EDT · Map |
| May 14, 2026, 2:25 PM EDT | May 14, 2026, 6:58 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 7.4 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d4b69a2b-eca4-4948-88d6-916b088beb37, published Jul 2, 2026, 1:18 PM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF WORCESTER, May 14, 2026, 2:25 PM EDT · Map |
| May 14, 2026, 2:25 PM EDT | May 14, 2026, 6:58 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 9aa998fd-6a0a-4b9d-bd38-7423952104c9, published Jun 4, 2026, 8:42 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | Event: Combined sewer overflow, CITY OF WORCESTER, May 14, 2026, 2:25 PM EDT · Map |
| Mar 16, 2026, 11:48 AM EDT | Mar 16, 2026, 7:03 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 7.2 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 012fa070-de61-4760-b43e-538bd50e095d, published Jun 4, 2026, 9:00 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) | |||||||
| Mar 16, 2026, 11:48 AM EDT | Mar 16, 2026, 7:03 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b5c6a852-9280-464f-8dcc-a800de0a0d71, published Mar 17, 2026, 9:41 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) | |||||||
| Mar 6, 2026, 4:44 AM EST | Mar 6, 2026, 6:20 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 1.84 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1138c3b1-ed9e-48e3-a4f5-2ece41a58458, published Jun 4, 2026, 8:48 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) | |||||||
| Mar 6, 2026, 4:44 AM EST | Mar 6, 2026, 6:20 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 19311c18-02dd-4c45-a4e2-e084cecf621a, published Mar 6, 2026, 10:41 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 24, 2026, 7:42 AM EST | ended, time not reported | Flint Pond, MA | not stated | Sanitary sewer overflow | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 11cfb542-31a9-47eb-9702-b5a826ec997f, published Jan 25, 2026, 8:29 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) | |||||||
| Dec 29, 2025, 2:07 PM EST | ended, time not reported | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1ea56dfd-9592-487e-9266-6cdf9ef2b4d6, published Dec 30, 2025, 11:02 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 19, 2025, 11:20 AM EST | ended, time not reported | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record dd803767-9e52-4c83-aa4e-c5d5c4407fb9, published Dec 19, 2025, 2:48 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 30, 2025, 10:00 PM EDT | ended, time not reported | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c7234770-535e-4614-889d-413ccdfd7132, published Oct 31, 2025, 11:22 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) | |||||||
| Oct 22, 2025, 5:50 AM EDT | Oct 22, 2025, 9:05 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 7.85 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1a341f3f-d528-44bc-b952-67157298e960, published Dec 19, 2025, 4:22 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 22, 2025, 5:50 AM EDT | Oct 22, 2025, 9:05 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3c217fe4-216d-49fc-a8df-c0db50e9eb81, published Oct 27, 2025, 3:46 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) | |||||||
| Oct 20, 2025, 8:51 AM EDT | Oct 20, 2025, 12:36 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 20.46 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record caa5e688-7987-49a5-b822-7a598c2cf104, published Dec 19, 2025, 4:15 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, 8:51 AM EDT | Oct 20, 2025, 12:36 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 41078b9d-8849-4918-8a31-8c395af0249f, published Oct 22, 2025, 8:17 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, 4:33 PM EDT | Sep 6, 2025, 8:15 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 9,000 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record e29ff18b-5011-4cde-a620-51fbf775da0f, published Oct 31, 2025, 11:30 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, 4:33 PM EDT | Sep 6, 2025, 8:15 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 53a5910f-ef91-45c9-89e9-c81064807b6e, published Sep 8, 2025, 1:25 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 20, 2025, 11:19 PM EDT | Aug 21, 2025, 12:50 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 593,000 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2b6e64ce-a9a1-4359-8b12-6e5df0da006a, published Sep 24, 2025, 7:43 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 20, 2025, 11:19 PM EDT | Aug 21, 2025, 12:50 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 5e14e91e-4f7d-4f04-81e3-f680093b9d9f, published Aug 21, 2025, 12:48 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, 2025, 5:15 PM EDT | Jul 31, 2025, 6:18 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 3.16 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6649d7a4-f9de-4c80-96d2-b304988151dc, published Dec 19, 2025, 4:24 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, 2025, 5:15 PM EDT | Aug 1, 2025, 1:38 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 10.35 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 21f02b92-52c6-410b-a2b2-238ad2d94e4f, published Aug 21, 2025, 1:02 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, 2025, 5:15 PM EDT | Aug 1, 2025, 1:38 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 35b69324-086f-41e4-bb4d-01651a564cc8, published Jul 31, 2025, 6:02 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 22, 2025, 3:47 PM EDT | May 23, 2025, 3:35 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 4.62 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 471de157-47cc-4998-a75a-164134929ca6, published Jul 23, 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) | |||||||
| May 22, 2025, 3:47 PM EDT | May 23, 2025, 3:35 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2adb44b4-9303-4189-ac6f-1b0f36db61e7, published May 22, 2025, 4:48 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 15, 2025, 6:18 PM EDT | May 15, 2025, 10:01 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 6.27 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 99e9087e-c15a-4292-8df5-a8d11be3f104, published Jul 23, 2025, 9:50 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 15, 2025, 6:18 PM EDT | May 15, 2025, 10:01 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4376b600-ad12-49dd-96cf-c1a5b3735a25, published May 15, 2025, 1:19 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) | |||||||
| May 10, 2025, 8:32 AM EDT | May 10, 2025, 1:54 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 1.13 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d4354c4e-df6a-4493-a25b-4251da26f88c, published Jul 23, 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) | |||||||
| May 10, 2025, 8:32 AM EDT | May 10, 2025, 1:54 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d3bc616e-98a6-4b9b-bc9d-6cd94de781ac, published May 15, 2025, 1:18 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 9, 2025, 5:01 PM EDT | May 9, 2025, 8:29 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 720,000 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 48affde6-1124-4eec-be03-8aa7123e2f42, published Jul 23, 2025, 9:43 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 9, 2025, 5:01 PM EDT | May 9, 2025, 8:29 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0054fafb-b6c4-4b0a-89a5-466c0d1ea857, published May 15, 2025, 1:17 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 8, 2025, 9:17 PM EDT | May 9, 2025, 1:00 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 2.26 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d646c230-986a-4c3a-ac0a-e2306c514264, published Jul 23, 2025, 9:40 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 8, 2025, 9:17 PM EDT | May 9, 2025, 1:00 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4e8d5a9f-58ee-461d-ae57-c1bdc54d3bf4, published May 9, 2025, 8:49 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) | |||||||
| Apr 26, 2025, 9:15 AM EDT | Apr 26, 2025, 10:40 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 1.34 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ee322e89-17a8-42a1-844c-783b4b3cb9db, published Jun 26, 2025, 11:14 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 26, 2025, 9:15 AM EDT | Apr 26, 2025, 10:40 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 22fec1ad-ee52-493f-a407-f76d582c31dc, published Jun 26, 2025, 11:12 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) | |||||||
| Apr 1, 2025, 1:33 AM EDT | Apr 1, 2025, 2:05 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 763a495f-14e9-4111-9d38-081dc448b6c5, published Apr 1, 2025, 9:38 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, 1:25 AM EDT | Apr 1, 2025, 2:05 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 773,000 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0851dd93-0fd2-4de9-a5b2-19877ddc7a36, published Jun 26, 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) | |||||||
| Mar 24, 2025, 5:35 PM EDT | Mar 24, 2025, 6:10 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 950,000 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4be4ddd4-99f3-4b5a-ba09-1f26c36a5911, published Apr 29, 2025, 10:51 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) | |||||||
| Mar 24, 2025, 5:35 PM EDT | Mar 24, 2025, 6:10 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 742e2ace-de64-4808-b6a8-22b798949e72, published Mar 25, 2025, 9:58 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) | |||||||
| Mar 17, 2025, 5:19 AM EDT | Mar 17, 2025, 7:30 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 2.45 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 646ab4d8-9f89-4bbd-b2bc-9a4ee814be4f, published Apr 29, 2025, 10:49 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) | |||||||
| Mar 17, 2025, 5:19 AM EDT | Mar 17, 2025, 7:30 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 06fc2008-09b6-441c-856a-30d734185ef0, published Mar 17, 2025, 8:13 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) | |||||||
| Mar 5, 2025, 10:20 PM EST | Mar 6, 2025, 5:37 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 12,000 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 8ddfdb2b-07b7-4baa-9572-4e2fe93082bd, published Apr 29, 2025, 10:45 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) | |||||||
| Mar 5, 2025, 10:20 PM EST | Mar 6, 2025, 5:37 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7ebea337-bf2c-4592-84a3-7388fda55926, published Mar 6, 2025, 2:42 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, 2:41 AM EST | Jan 1, 2025, 4:34 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 1 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 8ce8afa7-e6df-4d49-ac06-2cbb46e509a3, published Feb 26, 2025, 10:53 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, 2:41 AM EST | Jan 1, 2025, 4:34 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ba568031-3839-4666-a5a6-7d06740c9e7f, published Jan 2, 2025, 8:59 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, 7:30 AM EST | Dec 30, 2024, 8:44 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 2,000 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 60f924bf-ea0f-471a-9aea-b1aadd7393ce, published Jan 23, 2025, 1:46 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, 7:30 AM EST | Dec 30, 2024, 8:44 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1b8f7fbc-f488-43f8-ae5f-200173192db3, published Dec 30, 2024, 10:06 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, 10:55 AM EST | Dec 11, 2024, 7:36 PM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 12,965 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ad32482f-7c4c-46e9-a656-96df7904aaa1, published Jan 23, 2025, 1:42 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, 10:55 AM EST | Dec 11, 2024, 7:36 PM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record eba629d5-163d-4163-8070-d79d014bff7d, published Dec 12, 2024, 1:26 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 26, 2024, 8:18 PM EDT | Jun 26, 2024, 10:38 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 6.4 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 65d22e03-ef6f-460b-b6f4-f1a96fc81f95, published Jul 26, 2024, 1:51 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) | |||||||
| Jun 26, 2024, 8:18 PM EDT | Jun 26, 2024, 10:38 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record de5169c6-b8d3-44f9-a654-ca59b17fa5f1, published Jun 27, 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) | |||||||
| Jun 22, 2024, 4:00 PM EDT | Jun 22, 2024, 5:30 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 4.36 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4b787720-956e-4c6f-a6a3-dafd7a21b77d, published Jul 26, 2024, 1:48 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 22, 2024, 4:00 PM EDT | Jun 22, 2024, 5:30 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f5676cd4-409b-4ce7-828b-93d25f7f9207, published Jun 24, 2024, 4:28 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) | |||||||
| Jun 14, 2024, 1:15 PM EDT | Jun 14, 2024, 2:42 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 3.14 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 87c6bec0-8c06-4335-84a2-6b6e14c8ec3d, published Jul 26, 2024, 1:46 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 14, 2024, 1:15 PM EDT | Jun 14, 2024, 2:42 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 21a4a80b-d79b-4a56-85ed-65eb13116644, published Jun 14, 2024, 3:43 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) | |||||||
| May 30, 2024, 7:44 AM EDT | May 30, 2024, 10:59 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 6.27 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 161f8cea-9b8d-448b-8fab-df5a65b7d3cf, published Jul 2, 2024, 2:39 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, 7:42 AM EDT | May 30, 2024, 10:59 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record e2c70ef1-5df6-41a6-aa92-4f9f43636c0c, published May 30, 2024, 4:23 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 23, 2024, 1:04 PM EDT | May 23, 2024, 3:34 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 7.86 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f5590cdc-90fa-45de-9217-956730188e92, published Jul 2, 2024, 2:37 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) | |||||||
| May 23, 2024, 1:04 PM EDT | May 23, 2024, 3:34 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 20563d73-3b76-490f-acf6-44b37b8cc88e, published May 23, 2024, 1:50 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) | |||||||
| May 18, 2024, 11:48 AM EDT | May 18, 2024, 11:03 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 9.69 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6951c458-262a-4d3f-aa73-80a0f94603f2, published Jul 2, 2024, 2:32 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 18, 2024, 11:48 AM EDT | May 18, 2024, 11:03 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c891da90-e5a9-4f36-a124-2006876fe59f, published May 20, 2024, 8:25 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 16, 2024, 4:05 AM EDT | May 16, 2024, 7:36 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 714,000 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0363178f-7838-4b16-ba5f-0f53d769b674, published Jul 2, 2024, 2:30 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 16, 2024, 4:04 AM EDT | May 16, 2024, 7:36 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 25a66c8e-4b35-498d-b5eb-cbb334ebc611, published May 20, 2024, 8:23 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 12, 2024, 5:21 AM EDT | Apr 12, 2024, 12:44 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 9.48 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a360f705-fd73-469b-bacc-49a3bc3efc5b, published May 23, 2024, 2:04 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 12, 2024, 5:21 AM EDT | Apr 12, 2024, 12:44 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record cb0ed269-7cc0-4db6-868f-b3b1add0c877, published Apr 12, 2024, 11:56 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) | |||||||
| Apr 4, 2024, 3:46 PM EDT | Apr 4, 2024, 6:11 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 1.06 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4cb37462-4c2c-4fa5-83bd-0a26ef4c4812, published May 23, 2024, 2:28 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) | |||||||
| Apr 4, 2024, 3:46 PM EDT | Apr 4, 2024, 6:11 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 85ae09f8-59da-42c9-b4c9-d981921de2f0, published Apr 5, 2024, 7:49 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) | |||||||
| Apr 4, 2024, 1:04 AM EDT | Apr 4, 2024, 1:22 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 131,000 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f93d2de4-cccf-469b-8b5e-5ca257de3dc2, published May 23, 2024, 2:25 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 4, 2024, 1:04 AM EDT | Apr 4, 2024, 1:22 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 70b0d24b-961d-4c7e-883b-0e7fb249be57, published Apr 4, 2024, 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) | |||||||
| Mar 28, 2024, 6:45 AM EDT | Mar 28, 2024, 9:07 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 63884334-723d-46e7-953a-ac83b669fa18, published Mar 28, 2024, 1:30 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 28, 2024, 6:44 AM EDT | Mar 28, 2024, 9:07 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 1.64 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record fabea090-7e4b-481a-8d6c-6d99aeebb8ac, published Apr 17, 2024, 11:08 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) | |||||||
| Mar 23, 2024, 1:30 PM EDT | Mar 23, 2024, 8:15 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 12.28 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 75e764f3-585f-4280-8b8a-1b24f3d76a4f, published Apr 17, 2024, 10:26 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) | |||||||
| Mar 23, 2024, 1:30 PM EDT | Mar 23, 2024, 8:15 PM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0fa5c674-4b19-4dfe-bf86-00f48026dfdb, published Mar 25, 2024, 7:54 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) | |||||||
| Mar 10, 2024, 12:40 AM EST | Mar 10, 2024, 10:05 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 7.6 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 23b83c48-9f40-4197-8ee2-d6d0f1fc1e07, published Apr 17, 2024, 11:17 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) | |||||||
| Mar 10, 2024, 12:40 AM EST | Mar 10, 2024, 10:05 AM EDT | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 9514aa27-31b7-45ca-9b64-3f94001d6e43, published Mar 10, 2024, 1:22 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, 2024, 11:30 PM EST | Mar 7, 2024, 1:36 PM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 15.36 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 65bb8ea5-a961-40d7-ab8d-e44edab063cd, published Apr 17, 2024, 11:33 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) | |||||||
| Mar 6, 2024, 11:29 PM EST | Mar 7, 2024, 1:36 PM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2590ad66-d975-4211-a11c-e7657af3eedb, published Mar 7, 2024, 8:24 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) | |||||||
| Mar 2, 2024, 8:59 PM EST | Mar 3, 2024, 1:52 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 8.97 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 657e18ea-2999-408c-9683-0be133fa023b, published Apr 17, 2024, 11:38 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) | |||||||
| Mar 2, 2024, 8:59 PM EST | Mar 3, 2024, 1:52 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c3cdceae-b29c-4a51-8a65-2ada9f14db1a, published Mar 4, 2024, 8:08 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) | |||||||
| Feb 20, 2024, 6:00 PM EST | Feb 20, 2024, 10:30 PM EST | Lake Quinsigamond, MA | not stated | Sanitary sewer overflow | 193,380 gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f4b77de8-a269-4f09-a05e-1fa01427b7e1, published Feb 28, 2024, 4:21 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) | |||||||
| Feb 20, 2024, 6:00 PM EST | ended, time not reported | Lake Quinsigamond, MA | not stated | Sanitary sewer overflow | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record edd37763-65be-4c5c-927d-8dc02e039c2c, published Feb 21, 2024, 4:23 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) | |||||||
| Feb 10, 2024, 12:00 AM EST | Feb 11, 2024, 11:47 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 61.55 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4bc3c5b1-d670-4397-a56e-a943f848a789, published Feb 28, 2024, 3:20 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 26, 2024, 8:13 AM EST | Jan 26, 2024, 1:57 PM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 2.64 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 19bf11d0-e917-44dc-9048-d7d67b4203b3, published Feb 28, 2024, 4:00 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 26, 2024, 8:13 AM EST | Jan 26, 2024, 1:57 PM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1f577e8c-769b-4464-9b95-d45b77a6112b, published Jan 26, 2024, 3:55 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 25, 2024, 4:08 AM EST | Jan 25, 2024, 6:37 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 1.91 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 908f1621-156d-4011-accb-1311740797e7, published Feb 28, 2024, 3:57 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 25, 2024, 4:08 AM EST | Jan 25, 2024, 6:37 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 04dd30fe-8803-44a4-8e91-f4e9019df0a1, published Jan 25, 2024, 8:54 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 13, 2024, 4:53 AM EST | Jan 14, 2024, 4:10 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 25.81 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 88ddb435-78e4-4392-aa28-b774e7a56fe9, published Feb 28, 2024, 3:37 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 13, 2024, 4:53 AM EST | Jan 14, 2024, 4:10 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record eb353778-36e3-4f8c-a4a1-cb0a7f44c658, published Jan 25, 2024, 8:49 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 10, 2024, 12:00 AM EST | Jan 11, 2024, 11:47 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 61.55 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 385d811c-5b12-48dd-8d4c-3ef89784c035, published Apr 18, 2024, 7:45 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) | |||||||
| Jan 10, 2024, 12:00 AM EST | Jan 11, 2024, 11:47 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f1b38baf-4237-4e0e-8d2f-4f6094597bc3, published Jan 11, 2024, 8:11 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) | |||||||
| Dec 18, 2023, 5:22 AM EST | Dec 19, 2023, 5:06 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 55.34 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2cdc7f04-972f-4617-96af-d3a1091a0d7e, published Jan 25, 2024, 9:18 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 18, 2023, 5:22 AM EST | Dec 19, 2023, 5:06 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflowrevised | not reported | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c4e64581-dc0a-4b45-bcdc-684d907634bb, published Dec 18, 2023, 9:32 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 10, 2023, 4:45 PM EST | Dec 11, 2023, 9:06 AM EST | Blackstone River, MA | WOR001 QUINSIGAMOND AVENUE | Combined sewer overflow | 33.21 million gal | CITY OF WORCESTER (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 25ba63eb-c9c7-450e-b068-c5f68f26fabd, published Jan 25, 2024, 9:04 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) | |||||||
Showing the newest 100 events of 170 events. See them all with filters.
History
- Discharge events, last 12 months13Dec 2025 to Nov 2026
- Days with a discharge, last 12 months14Dec 2025 to Nov 2026
- Hours under advisory, last 12 months763Dec 2025 to Nov 2026; on this discharger's reports
- 2026 season under advisory15%May to October; 658 h
Discharge events per month
90 events, Jan 2022 to Nov 2026. Counted from 82 verified or annual reports, 8 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 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Aug 2022 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Sep 2022 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Oct 2022 | 1 | 0 | 0 | 1 | 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 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Feb 2023 | 0 | 0 | 0 | 0 | ||
| Mar 2023 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Apr 2023 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| May 2023 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Jun 2023 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Jul 2023 | 7 | 0 | 0 | 7 | Verified or annual reports | |
| Aug 2023 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Sep 2023 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Oct 2023 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Nov 2023 | 0 | 0 | 0 | 0 | ||
| Dec 2023 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Jan 2024 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Feb 2024 | 1 | 1 | 0 | 2 | Verified or annual reports | |
| Mar 2024 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Apr 2024 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| May 2024 | 4 | 0 | 0 | 4 | Verified or annual reports | |
| Jun 2024 | 3 | 0 | 0 | 3 | Verified or annual reports | |
| Jul 2024 | 0 | 0 | 0 | 0 | ||
| Aug 2024 | 0 | 0 | 0 | 0 | ||
| Sep 2024 | 0 | 0 | 0 | 0 | ||
| Oct 2024 | 0 | 0 | 0 | 0 | ||
| Nov 2024 | 0 | 0 | 0 | 0 | ||
| Dec 2024 | 2 | 0 | 0 | 2 | 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 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| May 2025 | 5 | 0 | 0 | 5 | Verified or annual reports | |
| Jun 2025 | 0 | 0 | 0 | 0 | ||
| Jul 2025 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Aug 2025 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Sep 2025 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Oct 2025 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Nov 2025 | 0 | 0 | 0 | 0 | ||
| Dec 2025 | 2 | 0 | 0 | 2 | Public notices (no report yet) | |
| Jan 2026 | 0 | 1 | 0 | 1 | Public notices (no report yet) | |
| Feb 2026 | 0 | 0 | 0 | 0 | ||
| Mar 2026 | 2 | 0 | 0 | 2 | Verified or annual reports | |
| Apr 2026 | 0 | 0 | 0 | 0 | ||
| May 2026 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Jun 2026 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Jul 2026 | 2 | 1 | 0 | 3 | Public notices (no report yet) | |
| Aug 2026 | 1 | 0 | 0 | 1 | Verified or annual reports | |
| Sep 2026 | 1 | 0 | 0 | 1 | Public notices (no report yet) | |
| 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. 5 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 | 49 | 49 | 744 | |
| Aug 2022 | 50 | 50 | 744 | |
| Sep 2022 | 112 | 112 | 720 | |
| Oct 2022 | 50 | 50 | 744 | |
| Nov 2022 | 56 | 56 | 720 | |
| Dec 2022 | 101 | 101 | 744 | |
| Jan 2023 | 221 | 221 | 744 | |
| Feb 2023 | 0 | 0 | 672 | |
| Mar 2023 | 53 | 53 | 744 | |
| Apr 2023 | 55 | 55 | 720 | |
| May 2023 | 103 | 103 | 744 | |
| Jun 2023 | 104 | 104 | 720 | |
| Jul 2023 | 368 | 368 | 744 | |
| Aug 2023 | 201 | 201 | 744 | |
| Sep 2023 | 196 | 196 | 720 | |
| Oct 2023 | 122 | 122 | 744 | |
| Nov 2023 | 0 | 0 | 720 | |
| Dec 2023 | 136 | 136 | 744 | |
| Jan 2024 | 230 | 230 | 744 | |
| Feb 2024 | 136 | 136 | 696 | |
| Mar 2024 | 277 | 277 | 744 | |
| Apr 2024 | 121 | 121 | 720 | |
| May 2024 | 202 | 202 | 744 | |
| Jun 2024 | 160 | 160 | 720 | |
| Jul 2024 | 0 | 0 | 744 | |
| Aug 2024 | 0 | 0 | 744 | |
| Sep 2024 | 0 | 0 | 720 | |
| Oct 2024 | 0 | 0 | 744 | |
| Nov 2024 | 0 | 0 | 720 | |
| Dec 2024 | 97 | 97 | 744 | |
| Jan 2025 | 53 | 53 | 744 | |
| Feb 2025 | 0 | 0 | 672 | |
| Mar 2025 | 154 | 154 | 744 | |
| Apr 2025 | 98 | 98 | 720 | |
| May 2025 | 200 | 200 | 744 | |
| Jun 2025 | 0 | 0 | 720 | |
| Jul 2025 | 7 | 7 | 744 | |
| Aug 2025 | 99 | 99 | 744 | |
| Sep 2025 | 52 | 52 | 720 | |
| Oct 2025 | 96 | 96 | 744 | |
| Nov 2025 | 0 | 0 | 720 | |
| Dec 2025 | 0 | 0 | 744 | |
| Jan 2026 | 0 | 0 | 744 | |
| Feb 2026 | 0 | 0 | 672 | |
| Mar 2026 | 105 | 105 | 744 | |
| Apr 2026 | 0 | 0 | 720 | |
| May 2026 | 53 | 53 | 744 | |
| Jun 2026 | 51 | 51 | 720 | |
| Jul 2026 | 168 | 168 | 744 | |
| Aug 2026 | 51 | 51 | 744 | |
| Sep 2026 | 88 | 88 | 720 | |
| Oct 2026 | 248 | 248 | 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 | 1 | |
| Aug 2022 | 1 | |
| Sep 2022 | 2 | |
| Oct 2022 | 1 | |
| Nov 2022 | 3 | |
| Dec 2022 | 2 | |
| Jan 2023 | 6 | |
| Feb 2023 | 0 | |
| Mar 2023 | 1 | |
| Apr 2023 | 2 | |
| May 2023 | 2 | |
| Jun 2023 | 2 | |
| Jul 2023 | 8 | |
| Aug 2023 | 4 | |
| Sep 2023 | 6 | |
| Oct 2023 | 2 | |
| Nov 2023 | 0 | |
| Dec 2023 | 4 | |
| Jan 2024 | 6 | |
| Feb 2024 | 3 | |
| Mar 2024 | 7 | |
| Apr 2024 | 2 | |
| May 2024 | 4 | |
| Jun 2024 | 3 | |
| Jul 2024 | 0 | |
| Aug 2024 | 0 | |
| Sep 2024 | 0 | |
| Oct 2024 | 0 | |
| Nov 2024 | 0 | |
| Dec 2024 | 2 | |
| Jan 2025 | 1 | |
| Feb 2025 | 0 | |
| Mar 2025 | 4 | |
| Apr 2025 | 2 | |
| May 2025 | 6 | |
| Jun 2025 | 0 | |
| Jul 2025 | 1 | |
| Aug 2025 | 3 | |
| Sep 2025 | 1 | |
| Oct 2025 | 2 | |
| Nov 2025 | 0 | |
| Dec 2025 | 2 | |
| Jan 2026 | 1 | |
| Feb 2026 | 0 | |
| Mar 2026 | 2 | |
| Apr 2026 | 0 | |
| May 2026 | 1 | |
| Jun 2026 | 1 | |
| Jul 2026 | 3 | |
| Aug 2026 | 2 | |
| Sep 2026 | 1 | |
| Oct 2026 | 1 | |
| Nov 2026 | 0 |
Reported volume per year
Gallons, summed from the 82 events that gave a number (8 did not).
- Partly covered or sparse source
8 of 90 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 | 21,278,915 | 8 | 0 | Partly covered or sparse source |
| 2023 | 230,649,000 | 29 | 0 | |
| 2024 | 248,650,345 | 23 | 0 | |
| 2025 | 62,936,001 | 17 | 2 | |
| 2026 | 25,272,000 | 5 | 6 |
Hours under advisory per year
Hours under advisory each year; 2026 to date.
- Advisory in effect
- Partly covered or sparse source
5 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 | 417 | 4.8% | Partly covered or sparse source |
| 2023 | 1,559 | 17.8% | |
| 2024 | 1,222 | 13.9% | |
| 2025 | 759 | 8.7% | |
| 2026 | 763 | 10.4% |
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 | 10 | 4 |
| Feb | 2 | 4 |
| Mar | 11 | 4 |
| Apr | 7 | 4 |
| May | 11 | 4 |
| Jun | 6 | 5 |
| Jul | 13 | 5 |
| Aug | 7 | 5 |
| Sep | 8 | 5 |
| Oct | 6 | 5 |
| Nov | 2 | 5 |
| Dec | 7 | 4 |
Discharge events by outfall
The 1 outfalls with the most events of 1, 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 |
|---|---|
| WOR001 QUINSIGAMOND AVENUE | 87 |
| Outfall not stated | 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