Massachusetts sewage discharges in 2025

3,799 records of sewage discharges and water advisories in Massachusetts dated in 2025, newest first, 1,311 earlier versions or duplicates included and marked. Each record keeps the source's own times and wording; a record from the last six months, or one still in effect, also has a page of its own.

By type: Combined sewer overflow (CSO)3,492 · Blended discharge264 · Sanitary sewer overflow (SSO)42 · Treatment bypass1

By source: CITY OF NEW BEDFORD (MassDEP sewage notification portal)780 · SPRINGFIELD WATER & SEWER COMMISSION (MassDEP sewage notification portal)664 · CITY OF FALL RIVER (MassDEP sewage notification portal)532 · EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures)388 · CITY OF HOLYOKE (MassDEP sewage notification portal)307 · LOWELL REGIONAL WASTEWATER UTILITY (MassDEP sewage notification portal)229 · CITY OF HAVERHILL (MassDEP sewage notification portal)131 · CITY OF CHICOPEE (MassDEP sewage notification portal)131 · 23 more

2025 in other states: Connecticut, Maine, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont.

Source: the agencies, sewer operators and EPA records named on each row and on the Sources page. Updated 2026-11-02 21:26 UTC.

Massachusetts sewage discharges in 2025

By month