Clean Water Act discharge permit · NPDES MA0100218
AMHERST W W T P, Hadley, MA: NPDES MA0100218 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
AMHERST W W T P holds NPDES permit MA0100218, which discharges to Connecticut River. EPA’s file records it issued June 26, 2012 and expiring August 31, 2017. 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 | AMHERST W W T P |
|---|---|
| Permittee as filed | AMHERST W W T P |
| NPDES ID | MA0100218 |
| 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 | June 26, 2012 |
| Expiration date | August 31, 2017 |
| Address | Hadley, MA 01035 |
| Receiving water | CONNECTICUT RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Russellville Brook-Connecticut River (HUC 010802010602) |
| Program components on file | Biosolids, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MAR000521088 |
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
- 24Pollutants on file
- 17Under a numeric limit
- 20With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| E. coli, thermotol, MF, MTEC | 2 | 25 | 20 | April 30, 2026 | 492% over the limit |
| Nitrogen, total [as N] | 2 | 14 | 12 | July 31, 2026 | 5% over the limit |
| Chlorine, total residual | 1 | 12 | 11 | June 30, 2026 | 100% over the limit |
| Solids, total suspended | 10 | 27 | 8 | May 31, 2025 | 11,340% over the limit |
| Coliform, fecal general | 2 | 10 | 8 | August 31, 2012 | 251% over the limit |
| pH | 2 | 11 | 6 | December 31, 2025 | |
| Solids, suspended percent removal | 1 | 3 | 2 | May 31, 2025 | 781% over the limit |
| BOD, carbonaceous, percent removal | 0 | 1 | 1 | March 31, 2025 | 226% over the limit |
| CBOD5+NH3-N | 0 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 3 | 4 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 4 | 0 | ||
| Fluorine, adsorbable organic | 0 | 4 | 0 | ||
| Flow, total | 0 | 3 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 2 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 2 | 0 | ||
| Phosphorus, total [as P] | 1 | 2 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 2 | 0 | ||
| BOD, 5-day, percent removal | 1 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 1 | 0 | ||
| Nitrogen, ammonia, total [as NH3] | 0 | 1 | 0 | ||
| Carbonaceous BOD, 5 day, 20 deg C filtrd | 10 | 0 | 0 | ||
| Nitrogen, ammonia [NH3-N] | 2 | 0 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 1 | 0 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 11, 2024 | Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
| March 7, 2024 | Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
| February 12, 2024 | PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] | EP6 |
| February 6, 2024 | Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment | EP6 |
| February 1, 2024 | PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] | EP6 |
| January 26, 2024 | Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
| January 15, 2024 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
| January 10, 2024 | Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
| November 4, 2023 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
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.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.