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Clean Water Act discharge permit · NPDES NH0100871

EXETER W W T P, Exeter, NH: NPDES NH0100871 discharge permit, effluent exceedances, inspections, penalties

EXETER W W T P, held by EXETER TOWN OF, holds NPDES permit NH0100871, which discharges to Squamscott River. EPA’s file records it issued December 12, 2012 and expiring February 28, 2018. 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 filedEXETER W W T P
Permittee as filedEXETER TOWN OF
NPDES IDNH0100871
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedDecember 12, 2012
Expiration dateFebruary 28, 2018
AddressExeter, NH 03833
Receiving waterSQUAMSCOTT RIVER
Receiving water impaired303(D) Listed
SubwatershedSquamscott River (HUC 010600030806)
Other EPA IDs (FRS)RCRA handler NHD510082068; ICIS-AIR source NH0000003301500159

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended76941April 30, 201982% over the limit
Nitrogen, ammonia total [as N]12923May 31, 20121,999% over the limit
Copper, total recoverable12121October 31, 2001576% over the limit
BOD, 5-day, 20 deg. C74114March 31, 2015110% over the limit
LC50 Static 48Hr Acute Menidia1119March 31, 201850% over the limit
pH2138April 30, 2024
E. coli, thermotol, MF, MTEC1424April 30, 201799,999% over the limit
Chlorine, total residual2122November 30, 2013300% over the limit
Enterococci271March 31, 2025151% over the limit
BOD, 5-day, percent removal151October 31, 201163% over the limit
Solids, suspended percent removal141April 30, 20139% over the limit
Coliform, fecal - % samples exceeding limit221December 31, 202520% over the limit
Coliform, total general011May 31, 2001174% over the limit
NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulata011December 31, 200199,999% over the limit
Noel Statre 7Day Chronic Menidia011March 31, 200175% over the limit
Nitrogen, total [as N]20200
Coliform, fecal general2100
Flow, in conduit or thru treatment plant260
LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)130
Perfluorooctanoic acid (PFOA)030
Perfluorononanoic acid (PFNA)030
Perfluorohexanesulfonic acid (PFHxS)030
Perfluorooctanesulfonic acid (PFOS)030
Nickel, total recoverable120
Zinc, total recoverable120
Cadmium, total recoverable120
Lead, total recoverable120
Chromium, total recoverable120
Arsenic, Inorganic020
Temperature, water deg. centigrade010
Arsenic, total [as As]010
Aluminum, total recoverable100

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

DateWhat EPA recordedAgency
September 30, 2025Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environmentEP6
December 27, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
December 12, 2023Dry-weather CSO discharge to waters of the U.S. that may endanger health or the environmentEP6
April 20, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6

Inspections

EPA’s inspection file holds no inspection for NPDES NH0100871.

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 NH0100871.

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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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 NH0100871 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers NPDES permit NH0100871 for EXETER W W T P in Exeter, NH, held by EXETER TOWN OF and discharging to the Squamscott River, with its permit status listed as administratively continued. The page lists a Major Discharger class, 22 pollutants under a numeric limit, and 15 pollutants with an effluent exceedance.