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Clean Water Act discharge permit · NPDES NH0100153

LITTLETON TOWN OF, Littleton, NH: NPDES NH0100153 discharge permit, effluent exceedances, inspections, penalties

LITTLETON TOWN OF holds NPDES permit NH0100153, which discharges to Ammonoosuc River. EPA’s file records it issued September 2, 2009 and expiring October 31, 2014. 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 filedLITTLETON TOWN OF
Permittee as filedLITTLETON TOWN OF
NPDES IDNH0100153
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
IssuedSeptember 2, 2009
Expiration dateOctober 31, 2014
AddressLittleton, NH 03561
Receiving waterAMMONOOSUC RIVER
SubwatershedBaker Brook-Ammonoosuc River (HUC 010801030403)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

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
Copper, total recoverable33932October 31, 202082% over the limit
Copper, total [as Cu]01714December 31, 202458% over the limit
Solids, total suspended877October 31, 20256,060% over the limit
pH254October 31, 2002
E. coli, thermotol, MF, MTEC054September 30, 200699,999% over the limit
E. coli043April 30, 2026248% over the limit
Lead, total recoverable3102December 31, 2018203% over the limit
Noel Statre 7Day Chronic Pimephales142March 31, 200999,999% over the limit
Nitrogen, ammonia total [as N]5101June 30, 2024142% over the limit
Phosphorus, total [as P]021May 31, 20261% over the limit
Solids, suspended percent removal111October 31, 202599,999% over the limit
Flow, in conduit or thru treatment plant280
Chlorine, total residual280
Nitrogen, total [as N]080
E. coli, colony forming units [CFU]260
Hardness, tot calc. [Ca, Mg, Fe] as CaC03130
Nickel, total recoverable120
Zinc, total recoverable120
Aluminum, total recoverable120
Cadmium, total recoverable120
Chromium, total recoverable120
LC50 Static 48Hr Acute Ceriodaphnia dubia120
LC50 Static 48Hr Acute Pimephales promelas120
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia120
Lead, total [as Pb]020
Zinc, total [as Zn]020
Temperature, water deg. centigrade010
Carbon, tot organic [TOC]010
Carbon, dissolved organic [as C]010
Hardness, total [as CaCO3]010
Cadmium, total [as Cd]010
Nickel, total [as Ni]010
Aluminum, total [as Al]010
BOD, 5-day, 20 deg. C800
Nitrogen, nitrite total [as N]200
Nitrogen, nitrate total [as N]200
Nitrogen, Kjeldahl, total [as N]200
BOD, 5-day, percent removal100

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 6, 2024Monitoring Violations - Improper Analysis or Lab ErrorST6
November 10, 2023Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environmentEP6
April 4, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
March 29, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
January 30, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
January 16, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
September 27, 2022PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
September 21, 2022Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
May 19, 2022Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, NH0100153.

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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 NH0100153 there.

Nearby on the register

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