Clean Water Act discharge permit · NPDES NH0100765
CHARLESTOWN WASTEWATER TREATMENT PLANT, Charlestown, NH: NPDES NH0100765 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 24Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
CHARLESTOWN WASTEWATER TREATMENT PLANT, held by CHARLESTOWN W W T P, holds NPDES permit NH0100765, which discharges to Connecticut River. EPA’s file records it issued June 21, 2010 and expiring August 31, 2015.
CHARLESTOWN WASTEWATER TREATMENT PLANT, Charlestown, New Hampshire: Individual permit NH0100765, held by CHARLESTOWN W W T P; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued June 21, 2010, term to August 31, 2015; discharges to CONNECTICUT RIVER; Sewage Treatment Facilities.
- BOD, 5-day, 20 deg. C: 7 limits, 36 violations of any kind, 9 effluent exceedances, latest December 31, 2022, largest 99,999% over the limit.
- Solids, total suspended: 7 limits, 36 violations of any kind, 7 effluent exceedances, latest April 30, 2022, largest 38% over the limit.
- pH: 2 limits, 14 violations of any kind, 4 effluent exceedances, latest September 30, 2023.
- E. coli, thermotol, MF, MTEC: 2 limits, 11 violations of any kind, 3 effluent exceedances, latest December 31, 2022, largest 496% over the limit.
- Solids, suspended percent removal: 1 limit, 8 violations of any kind, 3 effluent exceedances, latest March 31, 2020, largest 38% over the limit.
- BOD, 5-day, percent removal: 1 limit, 7 violations of any kind, 3 effluent exceedances, latest February 28, 2023, largest 21% over the limit.
- Chlorine, total residual: 2 limits, 9 violations of any kind, 1 effluent exceedance, latest June 30, 2000, largest 115% over the limit.
- LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia: 0 limits, 6 violations of any kind, 1 effluent exceedance, latest June 30, 2000, largest 20% over the limit.
- LC50 Static Renewal 48Hr Acute Pimephales promelas: 0 limits, 6 violations of any kind, 1 effluent exceedance, latest June 30, 2006, largest 99,999% over the limit.
- Nitrogen, total [as N]: 4 limits, 29 violations of any kind, 0 effluent exceedances.
- Nitrogen, Kjeldahl, total [as N]: 2 limits, 16 violations of any kind, 0 effluent exceedances.
- Nitrogen, ammonia total [as N]: 5 limits, 13 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 2 limits, 11 violations of any kind, 0 effluent exceedances.
- Hardness, total [as CaCO3]: 1 limit, 11 violations of any kind, 0 effluent exceedances.
- Nitrite + Nitrate total [as N]: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- Nickel, total recoverable: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Zinc, total recoverable: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Aluminum, total recoverable: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Cadmium, total recoverable: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Lead, total recoverable: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Chromium, total recoverable: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Copper, total recoverable: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- LC50 Static 48Hr Acute Pimephales promelas: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Carbon, tot organic [TOC]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Cadmium, total [as Cd]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Copper, total [as Cu]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Lead, total [as Pb]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Zinc, total [as Zn]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Aluminum, total [as Al]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- LC50 Static 48Hr Acute Ceriodaphnia dubia: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Nitrogen, nitrite total [as N]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Nitrogen, nitrate total [as N]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Temperature, water deg. centigrade: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Carbon, dissolved organic [as C]: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- April 23, 2023: PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] (EP6).
- April 17, 2023: Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment (EP6).
- April 22, 2022: Reporting Violations - Late Submittal of DMRs (ST6).
- April 22, 2022: Monitoring Violations - Improper Analysis or Lab Error (ST6).
- April 22, 2022: Reporting Violations - Improper/ Incorrect Reporting (ST6).
- April 22, 2022: Reporting Violations - Failure to Notify (ST6).
- April 30, 2021: Reporting Violations - Late Submittal of DMRs (ST6).
- April 30, 2021: Monitoring Violations - Improper Analysis or Lab Error (ST6).
- April 30, 2021: Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) (ST6).
New Hampshire holds 48 Publicly owned treatment works coverages of this permit type in EPA’s file; 38 were issued before NH0100765. CHARLESTOWN W W T P holds 2 permits in New Hampshire.
Other permits held by CHARLESTOWN W W T P
- CHARLESTOWN W W T P, Charlestown: NHL100765, issued January 1, 2021
Coverages issued nearest NH0100765
- October 30, 2007: WALLIS SANDS STATE PARK, Rye, NH0020966
- September 25, 2008: MANCHESTER CITY OF, Manchester, NH0100447
- November 5, 2008: LANCASTER LAGOON W W T F, Lancaster, NH0100145, held by LANCASTER W W T F
- September 2, 2009: LITTLETON TOWN OF, Littleton, NH0100153
- June 1, 2010: STAR ISLAND WASTEWATER TREATMENT FACILITY, Rye, NH0101028, held by STAR ISLAND TREATMENT FACILITY
- August 4, 2010: SEABROOK WWTP, Seabrook, NH0101303, held by SEABROOK
- September 6, 2011: CONCORD HALL STREET W W T P, Concord, NH0100901, held by CONCORD-HALL STREET CITY OF
- December 12, 2012: EXETER W W T P, Exeter, NH0100871, held by EXETER TOWN OF
- April 3, 2013: ASHLAND TOWN OF, Ashland, NH0100005
- May 7, 2015: BERLIN POLLUTION CONTROL FACILITY, Berlin, NH0100013, held by BERLIN P C F
CHARLESTOWN WASTEWATER TREATMENT PLANT among its neighbors
EPA’s permit file holds 7 discharge permits in the Jabes Hackett Brook-Connecticut River subwatershed (HUC 010801060703), NH0100765 among them. Its county holds 38, 4 of them major permits; NH0100765 is a major permit.
Other permits in the Jabes Hackett Brook-Connecticut River subwatershed (HUC 010801060703)
- CHARLESTOWN 43565, Charlestown: NHR1001E0, minor permit, permit term to February 15, 2022
- CHARLESTOWN W W T P, Charlestown: NHL100765, minor permit, permit term to December 31, 2025
- CHROMA STORMWATER, Rockingham: VTS007061, minor permit, discharging to 11-West, Saxton's, Williams, permit term to November 28, 2027
- GREENSOURCE EXPANSION, Charlestown: NHR10023W, minor permit, permit term to February 16, 2027
- GREENSOURCE EXPANSION, Charlestown: NHR10023X, minor permit, permit term to February 16, 2027
- VALORIZE INDUSTRIES INC. OFFICE, Rockingham: VTS007488, minor permit, permit term to February 28, 2029
Identity
| Facility as filed | CHARLESTOWN WASTEWATER TREATMENT PLANT |
|---|---|
| Permittee as filed | CHARLESTOWN W W T P |
| NPDES ID | NH0100765 |
| 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 21, 2010 |
| Expiration date | August 31, 2015 |
| Address | Charlestown, NH 03603 |
| Receiving water | CONNECTICUT RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Jabes Hackett Brook-Connecticut River (HUC 010801060703) |
| Program components on file | POTW, Pretreatment |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 35Pollutants on file
- 24Under a numeric limit
- 35With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 7 | 36 | 9 | December 31, 2022 | 99,999% over the limit |
| Solids, total suspended | 7 | 36 | 7 | April 30, 2022 | 38% over the limit |
| pH | 2 | 14 | 4 | September 30, 2023 | |
| E. coli, thermotol, MF, MTEC | 2 | 11 | 3 | December 31, 2022 | 496% over the limit |
| Solids, suspended percent removal | 1 | 8 | 3 | March 31, 2020 | 38% over the limit |
| BOD, 5-day, percent removal | 1 | 7 | 3 | February 28, 2023 | 21% over the limit |
| Chlorine, total residual | 2 | 9 | 1 | June 30, 2000 | 115% over the limit |
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | 0 | 6 | 1 | June 30, 2000 | 20% over the limit |
| LC50 Static Renewal 48Hr Acute Pimephales promelas | 0 | 6 | 1 | June 30, 2006 | 99,999% over the limit |
| Nitrogen, total [as N] | 4 | 29 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 16 | 0 | ||
| Nitrogen, ammonia total [as N] | 5 | 13 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 11 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 11 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 8 | 0 | ||
| Nickel, total recoverable | 1 | 5 | 0 | ||
| Zinc, total recoverable | 1 | 5 | 0 | ||
| Aluminum, total recoverable | 1 | 5 | 0 | ||
| Cadmium, total recoverable | 1 | 5 | 0 | ||
| Lead, total recoverable | 1 | 5 | 0 | ||
| Chromium, total recoverable | 1 | 5 | 0 | ||
| Copper, total recoverable | 1 | 5 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 1 | 4 | 0 | ||
| Carbon, tot organic [TOC] | 0 | 4 | 0 | ||
| Cadmium, total [as Cd] | 0 | 4 | 0 | ||
| Copper, total [as Cu] | 0 | 4 | 0 | ||
| Lead, total [as Pb] | 0 | 4 | 0 | ||
| Nickel, total [as Ni] | 0 | 4 | 0 | ||
| Zinc, total [as Zn] | 0 | 4 | 0 | ||
| Aluminum, total [as Al] | 0 | 4 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 1 | 3 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 2 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 2 | 0 | ||
| Temperature, water deg. centigrade | 0 | 2 | 0 | ||
| Carbon, dissolved organic [as C] | 0 | 2 | 0 |
Inspections, violations and enforcement
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 23, 2023 | PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] | EP6 |
| April 17, 2023 | Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | EP6 |
| April 22, 2022 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 22, 2022 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| April 22, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| April 22, 2022 | Reporting Violations - Failure to Notify | ST6 |
| April 30, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 30, 2021 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| April 30, 2021 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES NH0100765.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES NH0100765.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.