Clean Water Act discharge permit · NPDES MA0102598
CHARLES RIVER PCD, Medway, MA: NPDES MA0102598 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 15Pollutants with an effluent exceedance
CHARLES RIVER PCD, held by CHARLES RIVER P C D, holds NPDES permit MA0102598, which discharges to Charles River. EPA’s file records it issued September 29, 2000 and expiring November 30, 2004. 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 | CHARLES RIVER PCD |
|---|---|
| Permittee as filed | CHARLES RIVER P C D |
| NPDES ID | MA0102598 |
| 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 29, 2000 |
| Expiration date | November 30, 2004 |
| Address | Medway, MA 02053 |
| Receiving water | CHARLES RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Chicken Brook-Charles River (HUC 010900010602) |
| Program components on file | POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MAD985270610; ICIS-AIR source MA0000002512000150 |
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
- 18Pollutants on file
- 17Under a numeric limit
- 18With a violation of any kind
- 15With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 28 | 78 | 74 | June 30, 2021 | 1,225% over the limit |
| Solids, total suspended | 22 | 61 | 53 | May 31, 2012 | 5,368% over the limit |
| Phosphorus, total [as P] | 2 | 38 | 37 | July 31, 2026 | 1,350% over the limit |
| Copper, total [as Cu] | 2 | 38 | 37 | March 31, 2026 | 60% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 18 | 16 | September 30, 2023 | 39% over the limit |
| Chlorine, total residual | 5 | 86 | 11 | March 31, 2021 | 2,500% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 19 | 23 | 10 | February 28, 2022 | 99,999% over the limit |
| Coliform, fecal general | 5 | 10 | 10 | August 31, 2012 | 975% over the limit |
| E. coli, colony forming units [CFU] | 0 | 7 | 7 | July 31, 2024 | 99,999% over the limit |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 5 | 4 | July 31, 2018 | 90% over the limit |
| Solids, suspended percent removal | 1 | 4 | 3 | March 31, 2010 | 252% over the limit |
| Noel Statre 7Day Chronic Pimephales | 1 | 4 | 3 | October 31, 2010 | 90% over the limit |
| pH | 2 | 3 | 1 | March 31, 2004 | |
| Oxygen, dissolved [DO] | 1 | 2 | 1 | October 31, 2010 | 7% over the limit |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 1 | 2 | 1 | April 30, 2007 | 74% over the limit |
| Aluminum, total [as Al] | 1 | 1 | 0 | ||
| BOD, 5-day, percent removal | 1 | 1 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 1 | 1 | 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 MA0102598.
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 MA0102598 there.
Nearby on the register
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- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.