Clean Water Act discharge permit · NPDES NH0022021
BRIDGEWATER POWER COMPANY, Bridgewater, NH: NPDES NH0022021 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 19Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
BRIDGEWATER POWER COMPANY holds NPDES permit NH0022021, which discharges to Pemigewasset River. EPA’s file records it issued September 8, 2006 and expiring November 30, 2011. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | BRIDGEWATER POWER COMPANY |
|---|---|
| Permittee as filed | BRIDGEWATER POWER COMPANY |
| NPDES ID | NH0022021 |
| 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 |
| Issued | September 8, 2006 |
| Expiration date | November 30, 2011 |
| Address | Bridgewater, NH 03217 |
| Receiving water | PEMIGEWASSET RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Clay Brook-Pemigewasset River (HUC 010700010404) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 32Pollutants on file
- 19Under a numeric limit
- 31With a violation of any kind
- 2With 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 | 14 | 27 | 7 | September 30, 2023 | |
| Solids, total suspended | 6 | 10 | 1 | September 30, 2023 | 70% over the limit |
| Flow, in conduit or thru treatment plant | 6 | 10 | 0 | ||
| Oil & Grease | 6 | 9 | 0 | ||
| Zinc, total recoverable | 4 | 7 | 0 | ||
| Lead, total recoverable | 4 | 7 | 0 | ||
| Copper, total recoverable | 4 | 7 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 5 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 4 | 4 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 3 | 0 | ||
| Iron, total [as Fe] | 1 | 3 | 0 | ||
| Oxidants, total residual | 0 | 3 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 2 | 2 | 0 | ||
| Temperature, water deg. centigrade | 0 | 2 | 0 | ||
| Carbon, dissolved organic [as C] | 0 | 2 | 0 | ||
| Cadmium, total [as Cd] | 0 | 2 | 0 | ||
| Copper, total [as Cu] | 0 | 2 | 0 | ||
| Lead, total [as Pb] | 0 | 2 | 0 | ||
| Nickel, total [as Ni] | 0 | 2 | 0 | ||
| Zinc, total [as Zn] | 0 | 2 | 0 | ||
| Aluminum, total [as Al] | 0 | 2 | 0 | ||
| Nitrogen, Ammonia Total | 0 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 1 | 0 | ||
| Nickel, total recoverable | 2 | 1 | 0 | ||
| Aluminum, total recoverable | 2 | 1 | 0 | ||
| Cadmium, total recoverable | 2 | 1 | 0 | ||
| Chromium, total recoverable | 2 | 1 | 0 | ||
| NOAEL Static Renewal 48Hr Acute Pimephales promelas | 2 | 1 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 0 | 1 | 0 | ||
| NOAEL Static 48Hr Acute Ceriodaphnia dubia | 0 | 1 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 0 | 1 | 0 | ||
| Chlorine, total residual | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 30, 2025 | Monitoring Violations - Improper Analysis or Lab Error | EP6 |
| December 14, 2023 | Reporting Violations - Failure to Notify | ST6 |
| August 2, 2021 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
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 NH0022021 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.