Clean Water Act discharge permit · NPDES MA0100200
NORTHFIELD WWTF, Northfield, MA: NPDES MA0100200 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
NORTHFIELD WWTF, held by NORTHFIELD W W T F, holds NPDES permit MA0100200, which discharges to Connecticut River. EPA’s file records it issued May 13, 2002 and expiring September 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 | NORTHFIELD WWTF |
|---|---|
| Permittee as filed | NORTHFIELD W W T F |
| NPDES ID | MA0100200 |
| 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 | May 13, 2002 |
| Expiration date | September 30, 2005 |
| Address | Northfield, MA 01360 |
| Receiving water | CONNECTICUT RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Pauchaug Brook-Connecticut River (HUC 010802010501) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 9Under a numeric limit
- 16With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| pH | 2 | 14 | 12 | September 30, 2008 | |
| E. coli, thermotol, MF, MTEC | 0 | 8 | 8 | September 30, 2021 | 99,999% over the limit |
| BOD, 5-day, percent removal | 1 | 17 | 6 | April 30, 2020 | 114% over the limit |
| Chlorine, total residual | 2 | 8 | 6 | May 31, 2020 | 81% over the limit |
| Solids, suspended percent removal | 1 | 16 | 5 | February 28, 2019 | 98% over the limit |
| BOD, 5-day, 20 deg. C | 9 | 15 | 3 | July 31, 2009 | 69% over the limit |
| Solids, total suspended | 9 | 15 | 3 | May 31, 2018 | 357% over the limit |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 0 | 4 | 3 | August 31, 2016 | 26% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 2 | 1 | March 31, 2008 | 10% over the limit |
| Flow, total | 0 | 18 | 0 | ||
| Nitrogen, total [as N] | 0 | 8 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 4 | 0 | ||
| Ammonia & ammonium- total | 0 | 4 | 0 | ||
| Coliform, fecal general | 2 | 3 | 0 | ||
| Solids, settleable | 2 | 2 | 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 MA0100200.
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 MA0100200 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 September 15, 2026.