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Clean Water Act discharge permit · NPDES WI0024601

MANITOWOC WASTEWATER TREATMENT FACILITY, Manitowoc, WI: NPDES WI0024601 discharge permit, effluent exceedances, inspections, penalties

MANITOWOC WASTEWATER TREATMENT FACILITY, held by City of Manitowoc, holds NPDES permit WI0024601, which discharges to L Michigan. EPA’s file records it issued December 22, 2011 and expiring December 31, 2016. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedMANITOWOC WASTEWATER TREATMENT FACILITY
Permittee as filedCity of Manitowoc
NPDES IDWI0024601
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 22, 2011
Expiration dateDecember 31, 2016
AddressManitowoc, WI 54220
Receiving waterL MICHIGAN

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. C57272June 30, 202699,999% over the limit
Chlorine, total residual21919February 28, 20252,676% over the limit
Coliform, fecal general111418May 31, 201999,999% over the limit
Phosphorus, total [as P]788June 30, 202620% over the limit
Solids, total suspended500
pH200
Nitrogen, ammonia total [as N]200
Nickel, total recoverable200
Zinc, total recoverable200
Cadmium, total recoverable200
Lead, total recoverable200
Chromium, total recoverable200
Copper, total recoverable200
Flow, in conduit or thru treatment plant200
E. coli200
Mercury, total recoverable200

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
July 16, 2025WW SSO - Discharge to WatersST6
April 10, 2024Permit Violations - Violation Specified in CommentST6
April 1, 2024Monitoring Violations - Analysis not ConductedST6
November 21, 2023WW SSO - Discharge to WatersST6
September 13, 2023WW SSO - Discharge to WatersST6
March 22, 2023WW SSO - Discharge to WatersST6
June 23, 2017WW 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.

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, WI0024601.

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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 WI0024601 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.