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Clean Water Act discharge permit · NPDES IL0048143

COLLINS GENERATING STATION, Morris, IL: NPDES IL0048143 discharge permit, effluent exceedances, inspections, penalties

COLLINS GENERATING STATION, held by MIDWEST GENERATION LLC, holds NPDES permit IL0048143, which discharges to Illinois River. EPA’s file records it issued January 7, 2021 and expiring January 31, 2026. 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 filedCOLLINS GENERATING STATION
Permittee as filedMIDWEST GENERATION LLC
NPDES IDIL0048143
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJanuary 7, 2021
Expiration dateJanuary 31, 2026
AddressMorris, IL 60450
Receiving waterILLINOIS RIVER
Receiving water impaired303(D) Listed
Other EPA IDs (FRS)RCRA handler ILD000665497

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

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
Flow, in conduit or thru treatment plant550
Oil and grease240
Chlorine, total residual030
pH220
Solids, total suspended220
Flow100

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES IL0048143.

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 IL0048143.

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 IL0048143 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 IL0048143 for COLLINS GENERATING STATION in Morris, IL, held by MIDWEST GENERATION LLC and discharging to the ILLINOIS RIVER. The page reports the permit as a Minor Discharger class 5 under individual permit type, administratively continued past its January 31, 2026 expiration, with 0 pollutants under a numeric limit and 6 pollutants listed under effluent limits and exceedances.