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Clean Water Act discharge permit · NPDES CT0101001

WINDHAM TOWN OF WPCF, Willimantic, CT: NPDES CT0101001 discharge permit, effluent exceedances, inspections, penalties

WINDHAM TOWN OF WPCF, held by WINDHAM TOWN OF, holds NPDES permit CT0101001, which discharges to Shetucket River. EPA’s file records it issued July 1, 2013 and expiring July 31, 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 filedWINDHAM TOWN OF WPCF
Permittee as filedWINDHAM TOWN OF
NPDES IDCT0101001
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
IssuedJuly 1, 2013
Expiration dateJuly 31, 2018
Issuing agencyCT DEP
AddressWillimantic, CT 06226
Receiving waterSHETUCKET RIVER
SubwatershedSawmill Brook-Natchaug River (HUC 011000020206)

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
BOD, 5-day, 20 deg. C33232November 30, 201899,999% over the limit
Solids, total suspended32424February 28, 2018390% over the limit
Coliform, fecal general21616August 31, 201199,999% over the limit
BOD, 5-day, percent removal11212March 31, 2011127% over the limit
Chlorine, total residual288September 30, 20047,043% over the limit
Solids, suspended percent removal188February 28, 201473% over the limit
E. coli286August 31, 202399,999% over the limit
pH240
Copper, total [as Cu]220
Arsenic, total [as As]020
Cadmium, total [as Cd]020
Chromium, hexavalent [as Cr]020
Lead, total [as Pb]020
Silver, total [as Ag]020
Mercury, total [as Hg]020
Flow rate200
Phosphorus, total [as P]200
NOAEL Static 48Hr Acute D. pulex200
NOAEL Static 48Hr Acute Pimephales promelas200
Nitrogen, ammonia total [as N]100
Polychlorinated biphenyls [PCBs]100
Phosphorus, Total [Avg Seasonal Load Cap]100
Arsenic, sludge tot. dry wt [as As]100
Beryllium, sludge, tot. dry wt [as Be]100
Solids, total, percent100
Solids, fixed, % of total solids100
Solids, volatile % of total solids100
Zinc, sludge, total, dry weight [as Zn]100
Lead, sludge, total, dry weight [as Pb]100
Nickel, sludge, total, dry weight [as Ni]100
Mercury, sludge, total, dry weight [as Hg]100
Chromium, sludge, total, dry weight [as Cr]100
Copper, sludge, total, dry weight [as Cu]100
Cadmium, sludge, total, dry weight [as Cd]100

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES CT0101001.

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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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 CT0101001 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 Clean Water Act discharge permit NPDES CT0101001 for WINDHAM TOWN OF WPCF in Willimantic, CT, which discharges to the SHETUCKET RIVER in the Sawmill Brook-Natchaug River subwatershed (HUC 011000020206). The page lists the permit as Administratively continued, a Major Discharger class facility, with 34 pollutants on file, 28 under a numeric limit, 7 with an effluent exceedance, and 15 with a violation of any kind.