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Clean Water Act discharge permit · NPDES WI0025615

THORP WASTEWATER TREATMENT FACILITY, Thorp, WI: NPDES WI0025615 discharge permit, effluent exceedances, inspections, penalties

THORP WASTEWATER TREATMENT FACILITY, held by City of Thorp, holds NPDES permit WI0025615, which discharges to Eau Claire R Via. EPA’s file records it issued February 1, 2012 and expiring December 31, 2016. 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 filedTHORP WASTEWATER TREATMENT FACILITY
Permittee as filedCity of Thorp
NPDES IDWI0025615
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedFebruary 1, 2012
Expiration dateDecember 31, 2016
AddressThorp, WI 54771
Receiving waterEAU CLAIRE R VIA
SubwatershedGoggle-Eye Creek-North Fork Eau Claire River (HUC 070500060102)

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. C238922June 30, 202699% over the limit
Phosphorus, total [as P]05011June 30, 2026220% over the limit
Solids, total suspended23289October 31, 2025126% over the limit
pH0682October 31, 1991
Nitrogen, ammonia total [as N]01260
Flow, in conduit or thru treatment plant4900
Flow rate020
Copper, 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
October 9, 2023WW SSO - Discharge to WatersST6
April 3, 2023WW SSO - Discharge to WatersST6
April 1, 2023WW SSO - Discharge to WatersST6
September 5, 2018WW SSO - Discharge to WatersST6

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 WI0025615 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 the NPDES discharge permit WI0025615 held by the City of Thorp for the Thorp Wastewater Treatment Facility in Thorp, WI, a minor, publicly owned treatment works that discharges to the Eau Claire R Via. The permit is administratively continued, with an issue date of February 1, 2012 and an expiration date of December 31, 2016, and the page lists 8 pollutants on file, 4 under a numeric limit and 4 with an effluent exceedance. The receiving subwatershed is Goggle-Eye Creek-North Fork Eau Claire River (HUC 070500060102).