Clean Water Act discharge permit · NPDES MA0100404
MWRA-CLINTON S T P, Clinton, MA: NPDES MA0100404 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 14Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
MWRA-CLINTON S T P, held by MWRA - CLINTON S T P, holds NPDES permit MA0100404, which discharges to Nashua River,South Br. EPA’s file records it issued September 27, 2000 and expiring November 30, 2005. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MWRA-CLINTON S T P |
|---|---|
| Permittee as filed | MWRA - CLINTON S T P |
| NPDES ID | MA0100404 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial pretreatment |
| Issued | September 27, 2000 |
| Expiration date | November 30, 2005 |
| Address | Clinton, MA 01510 |
| Receiving water | NASHUA RIVER,SOUTH BR |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Goodridge Brook-Nashua River (HUC 010700040203) |
| Other EPA IDs (FRS) | RCRA handler MAD000843961; ICIS-AIR source MA0000002511800176 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 16Pollutants on file
- 14Under a numeric limit
- 12With a violation of any kind
- 12With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 2 | 100 | 99 | July 31, 2022 | 75% over the limit |
| Copper, total [as Cu] | 4 | 40 | 40 | September 30, 2002 | 294% over the limit |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 10 | 10 | September 30, 2022 | 80% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 6 | 4 | August 31, 2003 | 323% over the limit |
| Chlorine, total residual | 2 | 4 | 4 | April 30, 2019 | 436% over the limit |
| pH | 2 | 3 | 3 | May 31, 2008 | |
| Copper, total recoverable | 0 | 3 | 3 | August 31, 2022 | 7% over the limit |
| Coliform, fecal general | 3 | 3 | 2 | December 31, 2007 | 269% over the limit |
| Solids, total suspended | 6 | 2 | 1 | November 30, 2018 | 18% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 1 | 1 | June 30, 2019 | 18% over the limit |
| Oxygen, dissolved [DO] | 1 | 1 | 1 | August 31, 2011 | 15% over the limit |
| E. coli, colony forming units [CFU] | 0 | 1 | 1 | February 28, 2019 | 63% over the limit |
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 0 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 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 MA0100404.
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 MA0100404 there.
Nearby on the register
- Discharge permits in Clinton
- Every permit record in Clinton, A to Z
- Discharge permits in Massachusetts
- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.