Clean Water Act discharge permit · NPDES MA0101800
WESTFIELD MA POTW, Westfield, MA: NPDES MA0101800 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 21Pollutants under a numeric limit
- 13Pollutants with an effluent exceedance
WESTFIELD MA POTW, held by Westfield W P C P, holds NPDES permit MA0101800, which discharges to Westfield River. EPA’s file records it issued September 30, 2009 and expiring November 30, 2014. 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 | WESTFIELD MA POTW |
|---|---|
| Permittee as filed | Westfield W P C P |
| NPDES ID | MA0101800 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 30, 2009 |
| Expiration date | November 30, 2014 |
| Address | Westfield, MA 01085 |
| Receiving water | Westfield River |
| Subwatershed | Konkapot River (HUC 011000050301) |
| Program components on file | Biosolids, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MAD000844548 |
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
- 22Pollutants on file
- 21Under a numeric limit
- 16With a violation of any kind
- 13With 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 |
|---|---|---|---|---|---|
| Cadmium, total [as Cd] | 2 | 54 | 30 | July 31, 2021 | 1,100% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 22 | 21 | September 30, 2022 | 240% over the limit |
| Phosphorus, total [as P] | 6 | 19 | 17 | August 31, 2020 | 335% over the limit |
| Copper, total [as Cu] | 4 | 24 | 11 | April 30, 2020 | 193% over the limit |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 21 | 10 | September 30, 2009 | 75% over the limit |
| E. coli, thermotol, MF, MTEC | 2 | 8 | 8 | October 31, 2019 | 99,999% over the limit |
| Chlorine, total residual | 2 | 9 | 7 | July 31, 2018 | 1,816% over the limit |
| BOD, 5-day, 20 deg. C | 14 | 14 | 3 | February 29, 2016 | 36% over the limit |
| pH | 2 | 5 | 3 | April 30, 2017 | |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 1 | 12 | 2 | September 30, 2006 | 29% over the limit |
| Aluminum, total [as Al] | 2 | 5 | 2 | March 31, 2013 | 309% over the limit |
| BOD, 5-day, percent removal | 1 | 2 | 2 | March 31, 2020 | 29% over the limit |
| Solids, total suspended | 14 | 17 | 1 | February 29, 2016 | 8% over the limit |
| Nickel, total [as Ni] | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Coliform, fecal general | 0 | 2 | 0 | ||
| Nitrogen, total [as N] | 6 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 0 | 0 | ||
| Phosphorous, in total orthophosphate | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 0 | 0 | ||
| Flow, total | 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 MA0101800.
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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How we handle your data → Privacy
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 MA0101800 there.
Nearby on the register
- Discharge permits in Westfield
- Every permit record in Westfield, 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.