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Clean Water Act discharge permit · NPDES IL0026336

WYOMING STP, CITY OF, Wyoming, IL: NPDES IL0026336 discharge permit, effluent exceedances, inspections, penalties

WYOMING STP, CITY OF, held by WYOMING, CITY OF, holds NPDES permit IL0026336, which discharges to Unnamed Trib Of Spoon River. EPA’s file records it issued September 13, 2018 and expiring August 31, 2023. 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 filedWYOMING STP, CITY OF
Permittee as filedWYOMING, CITY OF
NPDES IDIL0026336
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
IssuedSeptember 13, 2018
Expiration dateAugust 31, 2023
AddressWyoming, IL 61491
Receiving waterUNNAMED TRIB OF SPOON RIVER
SubwatershedTown of Wyoming-Spoon River (HUC 071300050701)

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
Coliform, fecal general2172158May 31, 202599,999% over the limit
Nitrogen, ammonia total [as N]239924April 30, 2025296% over the limit
pH67313June 30, 2025
Peracetic Acid33010October 31, 202475% over the limit
Solids, total suspended8876December 31, 2024158% over the limit
Oxygen, dissolved [DO]5343January 31, 202427% over the limit
Chlorine, total residual3421March 31, 20088,567% over the limit
BOD, carbonaceous [5 day, 20 C]4440
Flow, in conduit or thru treatment plant4400
BOD, 5-day, 20 deg. C4370
Flow, total2190

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
April 17, 2026Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentST6
April 2, 2026Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentST6

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, IL0026336.

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  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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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 IL0026336 there.

Nearby on the register

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