Billerica Wastewater Treatment Facility
PARTIALLY_TREATED · Massachusetts · Billerica
- NPDES permit
- MA0101711
- Outfalls
- none with coordinates yet
- Receiving waters
- Concord River
- Tracked waters
- Concord River, MA
- Events tracked
- 185 discharges · latest Apr 3, 2025, 7:30 AM EDT
- Volume reported
- 396,451,400 gallons across the 8 discharges that give a volume (177 without one)
Source: discharger record from the project's research and EPA ECHO (dischargers.json); counts from the 185 event records below, as of 2026-11-02 11:56 UTC.
How it tells the public
Not verified; per 314 CMR 16.06(3) each non-CSO system files an SSO Public Notification Plan and must post advisories on its website and email/text subscribers for reportable events. Events appear in the MassDEP portal as permiteeClass 'Non-CSO'.
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.
Event history
| Start | End | Water | Outfall | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|
| Apr 3, 2025, 7:30 AM EDT | Apr 3, 2025, 8:30 AM EDT | “Drainage on Lowell St, opposite the canal starting at Franklin and running down to Nussey” (not placed) | not stated | Sanitary sewer overflow | 1,000 gal | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b1fc4ffe-e020-45e6-a6af-fecfc9d9ae6f, published Apr 10, 2025, 10:19 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 3, 2025, 7:30 AM EDT | ended, time not reported | “Drainage running along Lowell St., opposite of Canal, starting at Franklin” (not placed) | not stated | Sanitary sewer overflow | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d0606c92-1dd1-4d2d-8a7e-6933c01e3200, published Apr 10, 2025, 10:15 AM EDT, retrieved 2026-11-02 10:58 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Jan 28, 2025, 6:00 PM EST | ended, time not reported | “Manhole in front of 22 Christina Ave, catch basin in area however no evidence that wastewater went to the catch basin, will inspect” (not placed) | not stated | Sanitary sewer overflow | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record eb8ef002-35a3-4215-9493-586f70ecce94, published Feb 4, 2025, 7:44 AM EST, retrieved 2026-11-02 10:58 UTC · notice | record below |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 30, 2024, 7:00 AM EDT | Jun 21, 2024, 7:00 AM EDT | Concord River, MA | 001 | Bypass | 100 million gal | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 8044fc70-626d-4fec-925e-f17bf3102358, published May 10, 2024, 7:59 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 29, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c2c1b64a-39cd-46c1-a359-f9854237521f, published Apr 30, 2024, 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) | |||||||
| Apr 28, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6ce373f6-c37b-4a6f-af3e-625c09f22d31, published Apr 30, 2024, 7:42 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) | |||||||
| Apr 27, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d33a7123-c92a-44f2-9619-deb57e813c12, published Apr 30, 2024, 7:41 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) | |||||||
| Apr 26, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4bdd8735-8a18-4e30-8318-8189b80e6e65, published Apr 26, 2024, 12:26 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) | |||||||
| Apr 25, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 36bfa308-0e77-4208-99ce-88f6d208f346, published Apr 26, 2024, 12:26 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) | |||||||
| Apr 24, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b5147d42-a334-4793-aff0-0b98139a3cbb, published Apr 26, 2024, 12:24 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 23, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6ef05f25-ffd8-464a-8a85-ee35d6ad2264, published Apr 26, 2024, 12:14 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 22, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0af186a1-0282-462c-8bec-07ddd332feb6, published Apr 26, 2024, 12:13 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) | |||||||
| Apr 21, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2fc694ff-a8cd-4651-acd0-e195f12795d3, published Apr 26, 2024, 12:11 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 20, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b817f687-5c6f-433e-9dc7-15ef64b376c8, published Apr 26, 2024, 12:10 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) | |||||||
| Apr 19, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6f5df36a-69a3-4515-aae1-1d245a297230, published Apr 26, 2024, 12:09 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) | |||||||
| Apr 18, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 49af429f-0d80-45af-88d8-edfe0edbe264, published Apr 26, 2024, 12:04 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 17, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 25079c1e-78ef-4d8b-9dd6-ca54eb3a56e1, published Apr 17, 2024, 3:11 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 16, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 8fc6dd85-85ff-43b4-aaa6-9b1c25f54aad, published Apr 17, 2024, 3:11 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 15, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 5dd736e4-69e7-4ba2-83b8-f346dcd0cef1, published Apr 17, 2024, 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) | |||||||
| Apr 14, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 95f02031-ed23-4810-ba51-0a5e5303f359, published Apr 17, 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) | |||||||
| Apr 13, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 79a04d0f-5486-4ade-8601-7836ad0436d8, published Apr 17, 2024, 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) | |||||||
| Apr 12, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7621e024-221b-46a9-983e-43c6d4fe6d5c, published Apr 17, 2024, 3:07 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 11, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 470426ad-7226-481a-a639-24acf5c2a7e9, published Apr 17, 2024, 3:06 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) | |||||||
| Apr 10, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c6533b51-843d-4c45-96cc-a7ea79363c0d, published Apr 17, 2024, 3:03 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 9, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 108db281-a2ac-4f1a-840e-77c5e308beca, published Apr 17, 2024, 3:02 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) | |||||||
| Apr 9, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record e0d68c03-7a13-433a-8054-0ffd2f38ebe6, published Apr 17, 2024, 3:01 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 8, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2fc87d1d-c595-412b-8dd9-1488cc67f7f0, published Apr 8, 2024, 12:07 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 7, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 05a6cba6-43fa-4434-95b7-4f3592e678ad, published Apr 8, 2024, 12:06 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) | |||||||
| Apr 6, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 25749b96-20a9-4228-8f07-21337a468d66, published Apr 8, 2024, 12:05 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 5, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3c9f02dc-6f79-4aea-94fa-a7e29aaef1f8, published Apr 8, 2024, 12:04 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 4, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b5bcc4c1-ab09-4b49-b9dc-9033e4ad19c8, published Apr 8, 2024, 12:02 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) | |||||||
| Apr 3, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 44fc54f9-ab0f-4aed-92aa-3af409dcb154, published Apr 8, 2024, 12:00 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) | |||||||
| Apr 2, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4e2a33c6-314c-443b-b144-4400dbcb5096, published Apr 8, 2024, 11:59 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, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6b0576ed-6eee-4e3b-b11f-8fbd197cde0a, published Apr 8, 2024, 11:54 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 31, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7e0b7e73-612e-4022-8fe4-d57a405e854c, published Apr 8, 2024, 11:53 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 30, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 65c7f7de-1ddb-4c96-87dc-25a89cb880ca, published Apr 8, 2024, 11:51 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 29, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b981c44f-0fa5-418b-b602-3325da071e97, published Apr 8, 2024, 11:50 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) | |||||||
| Mar 28, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ac26939e-a484-429e-96be-2080211087a1, published Apr 8, 2024, 11:49 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 27, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d355c43f-aa33-42f3-b517-42e4c0b114f8, published Apr 3, 2024, 8:35 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 26, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 363241b3-6d40-40bf-b24d-e414021da8ed, published Apr 3, 2024, 8:39 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 25, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 981aa3c0-f545-4635-b22b-f41adc1eb3da, published Mar 25, 2024, 8:54 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 24, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record dfe61fed-b3e3-44ce-8ab8-20587eaaaf37, published Mar 25, 2024, 8:52 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, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record df9bb98f-c492-4fcb-826d-d715ad24ec6d, published Mar 25, 2024, 8:50 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) | |||||||
| Mar 22, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d7628d86-91c9-4b0a-9777-2d8df14442c6, published Mar 25, 2024, 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) | |||||||
| Mar 21, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c0e62b25-f97d-49d4-8646-253725c8fa98, published Mar 25, 2024, 8:46 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) | |||||||
| Mar 21, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a86cd000-a315-4098-97b4-ec493da7d8af, published Mar 25, 2024, 8:45 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 20, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 81c6ad97-e664-4a88-b428-dd08f52fbbfc, published Mar 25, 2024, 8:43 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) | |||||||
| Mar 19, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record de110d48-ac0f-451a-a925-aa3435639324, published Mar 19, 2024, 8:41 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 18, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4221f013-9af1-4b4f-b740-bfe70dc1387f, published Mar 19, 2024, 8:40 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) | |||||||
| Mar 17, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record c8989a8b-5d76-4f44-baa8-75d25cc4dd48, published Mar 19, 2024, 8:39 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, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 697ff5f1-b3bc-4e7a-b71f-921d2b504b7d, published Mar 19, 2024, 8:38 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 15, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 8f421a45-6c82-4be1-a954-5d3eee8bcd90, published Mar 15, 2024, 8:32 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 14, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b56d4e72-ae32-402a-9612-9f1d58e1717c, published Mar 15, 2024, 8:31 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) | |||||||
| Mar 13, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6f6277b2-d7d7-425c-9c4d-f3c26c76a946, published Mar 15, 2024, 8:29 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 12, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 25da6ac6-3d72-4657-80d1-8c8e1c51a82c, published Mar 15, 2024, 8:28 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 11, 2024, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7e83aacb-0e21-43cd-87b2-665975e71e0b, published Mar 15, 2024, 8:27 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, 7:00 AM EDT | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 57638984-c4d5-4cf9-9297-29118e5783af, published Mar 11, 2024, 1:56 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) | |||||||
| Feb 21, 2024, 8:00 AM EST | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Bypass | 176.53 million gal | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0b3786d6-5395-47fa-86ae-a2c7179ffed4, published Apr 8, 2024, 2:42 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) | |||||||
| Feb 21, 2024, 7:00 AM EST | May 2, 2024, 8:00 AM EDT | Concord River, MA | 001 | Blended (partially treated) dischargerevised | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0c1b6320-3b78-4d6b-b946-d3e1d58fdc67, published Feb 23, 2024, 8:41 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) | |||||||
| Feb 20, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 278135a9-99a9-4d3b-b2c5-5399ddc683e5, published Feb 23, 2024, 8:40 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 20, 2024, 7:00 AM EST · Map |
| Feb 19, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 34061578-2a79-49b3-8fdc-a6b9119cff2c, published Feb 23, 2024, 8:35 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 19, 2024, 7:00 AM EST · Map |
| Feb 18, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ae2d1bab-69bf-45a3-ac31-dfa426fa5ac2, published Feb 23, 2024, 8:34 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 18, 2024, 7:00 AM EST · Map |
| Feb 17, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 76f9ab33-ebb5-4a81-bedd-eabb69399b2c, published Feb 23, 2024, 8:32 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 17, 2024, 7:00 AM EST · Map |
| Feb 16, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record ce67db1a-025f-4503-8532-ecb7e138129e, published Feb 23, 2024, 8:30 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 16, 2024, 7:00 AM EST · Map |
| Feb 15, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 192933e5-957b-4ac3-887a-3a1faef028b4, published Feb 23, 2024, 8:28 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 15, 2024, 7:00 AM EST · Map |
| Feb 14, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4e5cbaf4-0688-48ab-8fa9-486855dac8e1, published Feb 14, 2024, 8:27 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 14, 2024, 7:00 AM EST · Map |
| Feb 13, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 0a6d625d-63dc-41c3-b819-ec76d18eec56, published Feb 14, 2024, 8:26 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 13, 2024, 7:00 AM EST · Map |
| Feb 12, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 81f77779-e778-4b31-ad02-68b17aa3a32c, published Feb 14, 2024, 8:25 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 12, 2024, 7:00 AM EST · Map |
| Feb 11, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 2875265c-ebdd-4a6b-9149-15802db5de46, published Feb 14, 2024, 8:23 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 11, 2024, 7:00 AM EST · Map |
| Feb 10, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a0569566-30da-4076-8458-76f8499a8dad, published Feb 14, 2024, 8:22 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 10, 2024, 7:00 AM EST · Map |
| Feb 9, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 33c59524-6bd9-47e7-8c84-bd54969f06da, published Feb 9, 2024, 2:46 PM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 9, 2024, 7:00 AM EST · Map |
| Feb 8, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record cf027dcd-24ee-4411-8c06-ec24b8c34090, published Feb 9, 2024, 2:45 PM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 8, 2024, 7:00 AM EST · Map |
| Feb 7, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a3019fbe-f91c-4d38-b424-f929d03c95d4, published Feb 9, 2024, 2:43 PM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 7, 2024, 7:00 AM EST · Map |
| Feb 6, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 97f70ee1-e3f3-4691-95d8-64ce0ac0819a, published Feb 9, 2024, 2:42 PM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 6, 2024, 7:00 AM EST · Map |
| Feb 5, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 7f51ad77-11f1-44c9-9c54-d4cbd69887c1, published Feb 9, 2024, 2:41 PM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 5, 2024, 7:00 AM EST · Map |
| Feb 4, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record f60ea04a-8cdd-4742-be1f-834c21dc74e2, published Feb 9, 2024, 2:40 PM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 4, 2024, 7:00 AM EST · Map |
| Feb 3, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 82275009-f54a-4689-afde-315c82d0375f, published Feb 9, 2024, 2:39 PM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 3, 2024, 7:00 AM EST · Map |
| Feb 2, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b3c9902d-54df-41f2-bd9a-9f38fa0f070a, published Feb 9, 2024, 2:38 PM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 2, 2024, 7:00 AM EST · Map |
| Feb 1, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 911cb153-cb58-43a6-a6e1-d48bad8537a9, published Feb 9, 2024, 2:37 PM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Feb 1, 2024, 7:00 AM EST · Map |
| Jan 31, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3fc81ad5-b63e-46eb-b696-b2de7ac98343, published Feb 9, 2024, 2:35 PM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 31, 2024, 7:00 AM EST · Map |
| Jan 30, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 276db373-dcf2-488c-8fca-11b5b087150a, published Jan 30, 2024, 8:54 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 30, 2024, 7:00 AM EST · Map |
| Jan 29, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 315f979b-6a2c-4a4c-9483-d6c39f5d05a4, published Jan 30, 2024, 8:52 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 29, 2024, 7:00 AM EST · Map |
| Jan 28, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 692a2dce-7d6d-47c0-9c98-56e7b50d2ca0, published Jan 30, 2024, 8:50 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 28, 2024, 7:00 AM EST · Map |
| Jan 27, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 6cb3dcb8-be68-4422-a8a5-c00610e311d6, published Jan 30, 2024, 8:49 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 27, 2024, 7:00 AM EST · Map |
| Jan 26, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 1bd9ee2e-69bc-4f00-a653-cbce83cad863, published Jan 30, 2024, 8:47 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 26, 2024, 7:00 AM EST · Map |
| Jan 25, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 569ffd50-402d-4f74-afc4-19626df54e1a, published Jan 30, 2024, 8:45 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 25, 2024, 7:00 AM EST · Map |
| Jan 25, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 73baddef-e91e-4875-b208-4bc4a4dfedc9, published Jan 30, 2024, 8:43 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 25, 2024, 7:00 AM EST · Map |
| Jan 24, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 47b899f4-2dea-4cc7-8365-4e2d45efb663, published Jan 30, 2024, 8:42 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 24, 2024, 7:00 AM EST · Map |
| Jan 23, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d06a3599-b3b8-4628-9a61-3d1fd18d7dda, published Jan 30, 2024, 8:41 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 23, 2024, 7:00 AM EST · Map |
| Jan 22, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record a78a26fe-2a44-4617-a645-699e73a28369, published Jan 23, 2024, 8:18 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 22, 2024, 7:00 AM EST · Map |
| Jan 21, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record fe5357a8-a82c-4ca3-9a52-9a9429a44631, published Jan 23, 2024, 8:16 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 21, 2024, 7:00 AM EST · Map |
| Jan 20, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 3b232a9d-dde6-4b1f-b39f-252f0f9ab2f1, published Jan 23, 2024, 8:15 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 20, 2024, 7:00 AM EST · Map |
| Jan 19, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 27a2ae5f-5ad7-4cdd-b734-8814a90545a1, published Jan 19, 2024, 10:20 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 19, 2024, 7:00 AM EST · Map |
| Jan 18, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record fa74f5bd-add9-4b5c-bdf5-64cc27fef0fb, published Jan 19, 2024, 10:18 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 18, 2024, 7:00 AM EST · Map |
| Jan 17, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record d717f50d-ce96-4538-9a13-3c27cb58e998, published Jan 19, 2024, 10:17 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 17, 2024, 7:00 AM EST · Map |
| Jan 16, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 07d1b414-8421-4890-b4ab-93a9606d4e52, published Jan 19, 2024, 10:16 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 16, 2024, 7:00 AM EST · Map |
| Jan 15, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record b4aad6ff-96a7-4de4-8cdf-2671a6b02df0, published Jan 19, 2024, 10:15 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 15, 2024, 7:00 AM EST · Map |
| Jan 14, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 888f4b62-b2c4-4d96-aad0-3585d2f01f6c, published Jan 19, 2024, 10:14 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 14, 2024, 7:00 AM EST · Map |
| Jan 13, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 4e6a69fa-ed96-4509-bc07-3901df402059, published Jan 19, 2024, 10:13 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 13, 2024, 7:00 AM EST · Map |
| Jan 12, 2024, 7:00 AM EST | ongoing (as reported) | Concord River, MA | 001 | Blended (partially treated) discharge | not reported | BILLERICA WASTEWATER TREATMENT FACILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record e94247e1-1cdc-4e50-bbe6-4e810da63bac, published Jan 19, 2024, 10:07 AM EST, retrieved 2026-11-02 10:58 UTC · notice | Event: Blended (partially treated) discharge, BILLERICA WASTEWATER TREATMENT FACILITY, Jan 12, 2024, 7:00 AM EST · Map |
Showing the newest 100 events of 190 events. See them all with filters.
History
- Discharge events, last 12 months0Dec 2025 to Nov 2026
- Days with a discharge, last 12 months0Dec 2025 to Nov 2026
- Hours under advisory, last 12 months0Dec 2025 to Nov 2026; on this discharger's reports
- 2026 season under advisory0.0%May to October; 0 h
Discharge events per month
101 events, Jan 2022 to Nov 2026. Counted from 8 verified or annual reports, 93 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 | 0 | 0 | 0 | 0 | ||
| Sep 2022 | 0 | 0 | 0 | 0 | ||
| Oct 2022 | 0 | 0 | 0 | 0 | ||
| Nov 2022 | 0 | 0 | 0 | 0 | ||
| Dec 2022 | 0 | 0 | 0 | 0 | ||
| Jan 2023 | 0 | 0 | 0 | 0 | ||
| Feb 2023 | 0 | 0 | 0 | 0 | ||
| Mar 2023 | 0 | 0 | 17 | 17 | Public notices (no report yet) | |
| Apr 2023 | 0 | 0 | 0 | 0 | ||
| May 2023 | 0 | 0 | 1 | 1 | Verified or annual reports | |
| Jun 2023 | 0 | 0 | 0 | 0 | ||
| Jul 2023 | 0 | 0 | 0 | 0 | ||
| Aug 2023 | 0 | 1 | 2 | 3 | Verified or annual reports | |
| Sep 2023 | 0 | 0 | 1 | 1 | Verified or annual reports | |
| Oct 2023 | 0 | 0 | 0 | 0 | ||
| Nov 2023 | 0 | 0 | 0 | 0 | ||
| Dec 2023 | 0 | 0 | 20 | 20 | Public notices (no report yet) | |
| Jan 2024 | 0 | 0 | 32 | 32 | Public notices (no report yet) | |
| Feb 2024 | 0 | 0 | 1 | 1 | Verified or annual reports | |
| Mar 2024 | 0 | 0 | 23 | 23 | Public notices (no report yet) | |
| Apr 2024 | 0 | 0 | 1 | 1 | Verified or annual reports | |
| May 2024 | 0 | 0 | 0 | 0 | ||
| Jun 2024 | 0 | 0 | 0 | 0 | ||
| 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 | 0 | 0 | 0 | 0 | ||
| Jan 2025 | 0 | 1 | 0 | 1 | Public notices (no report yet) | |
| Feb 2025 | 0 | 0 | 0 | 0 | ||
| Mar 2025 | 0 | 0 | 0 | 0 | ||
| Apr 2025 | 0 | 1 | 0 | 1 | Verified or annual reports | |
| May 2025 | 0 | 0 | 0 | 0 | ||
| Jun 2025 | 0 | 0 | 0 | 0 | ||
| Jul 2025 | 0 | 0 | 0 | 0 | ||
| Aug 2025 | 0 | 0 | 0 | 0 | ||
| Sep 2025 | 0 | 0 | 0 | 0 | ||
| Oct 2025 | 0 | 0 | 0 | 0 | ||
| 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 | 0 | 0 | 0 | 0 | ||
| Jul 2026 | 0 | 0 | 0 | 0 | ||
| Aug 2026 | 0 | 0 | 0 | 0 | ||
| Sep 2026 | 0 | 0 | 0 | 0 | ||
| Oct 2026 | 0 | 0 | 0 | 0 | ||
| 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. 2 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. 25 events reported to last more than 31 days are counted to 31 days. 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 | 0 | 0 | 744 | |
| Sep 2022 | 0 | 0 | 720 | |
| Oct 2022 | 0 | 0 | 744 | |
| Nov 2022 | 0 | 0 | 720 | |
| Dec 2022 | 0 | 0 | 744 | |
| Jan 2023 | 0 | 0 | 744 | |
| Feb 2023 | 0 | 0 | 672 | |
| Mar 2023 | 417 | 417 | 744 | |
| Apr 2023 | 96 | 96 | 720 | |
| May 2023 | 216 | 216 | 744 | |
| Jun 2023 | 0 | 0 | 720 | |
| Jul 2023 | 0 | 0 | 744 | |
| Aug 2023 | 330 | 330 | 744 | |
| Sep 2023 | 336 | 336 | 720 | |
| Oct 2023 | 128 | 128 | 744 | |
| Nov 2023 | 0 | 0 | 720 | |
| Dec 2023 | 473 | 473 | 744 | |
| Jan 2024 | 744 | 744 | 744 | |
| Feb 2024 | 359 | 359 | 696 | |
| Mar 2024 | 744 | 744 | 744 | |
| Apr 2024 | 720 | 720 | 720 | |
| May 2024 | 744 | 744 | 744 | |
| Jun 2024 | 31 | 31 | 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 | 0 | 0 | 744 | |
| Jan 2025 | 0 | 0 | 744 | |
| Feb 2025 | 0 | 0 | 672 | |
| Mar 2025 | 0 | 0 | 744 | |
| Apr 2025 | 49 | 49 | 720 | |
| May 2025 | 0 | 0 | 744 | |
| Jun 2025 | 0 | 0 | 720 | |
| Jul 2025 | 0 | 0 | 744 | |
| Aug 2025 | 0 | 0 | 744 | |
| Sep 2025 | 0 | 0 | 720 | |
| Oct 2025 | 0 | 0 | 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 | 0 | 0 | 720 | |
| Jul 2026 | 0 | 0 | 744 | |
| Aug 2026 | 0 | 0 | 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 | 0 | |
| Sep 2022 | 0 | |
| Oct 2022 | 0 | |
| Nov 2022 | 0 | |
| Dec 2022 | 0 | |
| Jan 2023 | 0 | |
| Feb 2023 | 0 | |
| Mar 2023 | 16 | |
| Apr 2023 | 0 | |
| May 2023 | 8 | |
| Jun 2023 | 0 | |
| Jul 2023 | 0 | |
| Aug 2023 | 14 | |
| Sep 2023 | 13 | |
| Oct 2023 | 4 | |
| Nov 2023 | 0 | |
| Dec 2023 | 20 | |
| Jan 2024 | 31 | |
| Feb 2024 | 1 | |
| Mar 2024 | 22 | |
| Apr 2024 | 1 | |
| May 2024 | 0 | |
| Jun 2024 | 0 | |
| Jul 2024 | 0 | |
| Aug 2024 | 0 | |
| Sep 2024 | 0 | |
| Oct 2024 | 0 | |
| Nov 2024 | 0 | |
| Dec 2024 | 0 | |
| Jan 2025 | 1 | |
| Feb 2025 | 0 | |
| Mar 2025 | 0 | |
| Apr 2025 | 1 | |
| May 2025 | 0 | |
| Jun 2025 | 0 | |
| Jul 2025 | 0 | |
| Aug 2025 | 0 | |
| Sep 2025 | 0 | |
| Oct 2025 | 0 | |
| Nov 2025 | 0 | |
| Dec 2025 | 0 | |
| Jan 2026 | 0 | |
| Feb 2026 | 0 | |
| Mar 2026 | 0 | |
| Apr 2026 | 0 | |
| May 2026 | 0 | |
| Jun 2026 | 0 | |
| Jul 2026 | 0 | |
| Aug 2026 | 0 | |
| Sep 2026 | 0 | |
| Oct 2026 | 0 | |
| Nov 2026 | 0 |
Reported volume per year
Gallons, summed from the 8 events that gave a number (93 did not).
- Partly covered or sparse source
93 of 101 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 | 0 | 0 | 0 | Partly covered or sparse source |
| 2023 | 119,920,000 | 5 | 37 | |
| 2024 | 276,530,400 | 2 | 55 | |
| 2025 | 1,000 | 1 | 1 | |
| 2026 | 0 | 0 | 0 |
Hours under advisory per year
Hours under advisory each year; 2026 to date.
- Advisory in effect
- Partly covered or sparse source
2 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. 25 events reported to last more than 31 days are counted to 31 days. 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 | 0 | 0.0% | Partly covered or sparse source |
| 2023 | 1,996 | 22.8% | |
| 2024 | 3,341 | 38.0% | |
| 2025 | 49 | 0.6% | |
| 2026 | 0 | 0.0% |
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 | 33 | 4 |
| Feb | 1 | 4 |
| Mar | 40 | 4 |
| Apr | 2 | 4 |
| May | 1 | 4 |
| Jun | 0 | 5 |
| Jul | 0 | 5 |
| Aug | 3 | 5 |
| Sep | 1 | 5 |
| Oct | 0 | 5 |
| Nov | 0 | 5 |
| Dec | 20 | 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 |
|---|---|
| 001 | 98 |
| 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