Clean Water Act discharge permit · NPDES MA0100901
SOUTHBRIDGE W W T P, Southbridge, MA: NPDES MA0100901 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 18Pollutants under a numeric limit
- 16Pollutants with an effluent exceedance
SOUTHBRIDGE W W T P, held by SOUTHBRIDGE W W T P/Dept of Public Works, holds NPDES permit MA0100901, which discharges to Quinebaug River. EPA’s file records it issued September 27, 2006 and expiring November 30, 2011. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SOUTHBRIDGE W W T P |
|---|---|
| Permittee as filed | SOUTHBRIDGE W W T P/Dept of Public Works |
| NPDES ID | MA0100901 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 27, 2006 |
| Expiration date | November 30, 2011 |
| Address | Southbridge, MA 01550 |
| Receiving water | QUINEBAUG RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Cady Brook-Quinebaug River (HUC 011000010104) |
| Program components on file | Biosolids, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MAD985267251 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 19Pollutants on file
- 18Under a numeric limit
- 18With a violation of any kind
- 16With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Copper, total [as Cu] | 4 | 50 | 50 | January 31, 2018 | 450% over the limit |
| Solids, total suspended | 16 | 41 | 40 | January 31, 2018 | 522% over the limit |
| Nitrogen, ammonia total [as N] | 9 | 35 | 34 | September 30, 2021 | 462% over the limit |
| BOD, 5-day, 20 deg. C | 16 | 32 | 30 | January 31, 2018 | 418% over the limit |
| Chlorine, total residual | 2 | 21 | 21 | September 30, 2018 | 99,999% over the limit |
| Phosphorus, total [as P] | 10 | 22 | 18 | January 31, 2018 | 353% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 16 | 16 | March 31, 2011 | 34% over the limit |
| Oxygen, dissolved [DO] | 1 | 12 | 12 | September 30, 2021 | 85% over the limit |
| Aluminum, total [as Al] | 1 | 12 | 12 | January 31, 2018 | 692% over the limit |
| Noel Statre 7Day Chronic Pimephales | 1 | 11 | 11 | November 30, 2014 | 99,999% over the limit |
| Coliform, fecal general | 2 | 10 | 10 | August 31, 2020 | 99,999% over the limit |
| pH | 2 | 7 | 7 | April 30, 2019 | |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 5 | 5 | August 31, 2010 | 99,999% over the limit |
| Solids, suspended percent removal | 1 | 2 | 2 | March 31, 2011 | 93% over the limit |
| LC50 Static 48Hr Acute Pimephales promelas | 1 | 2 | 2 | November 30, 2007 | 88% over the limit |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 1 | 1 | 1 | May 31, 2005 | 63% over the limit |
| Phosphate, ortho, dissolved [as P] | 4 | 4 | 0 | ||
| Bis[2-ethylhexyl] adipate | 0 | 1 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MA0100901.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MA0100901 there.
Nearby on the register
- Discharge permits in Southbridge
- Every permit record in Southbridge, A to Z
- Discharge permits in Massachusetts
- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.