Clean Water Act discharge permit · NPDES IL0002224

DRESDEN GENERATING STATION, Morris, IL: NPDES IL0002224 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MajorDischarger class
9Pollutants under a numeric limit
4Pollutants with an effluent exceedance

DRESDEN GENERATING STATION, held by EXELON GENERATION COMPANY LLC, holds NPDES permit IL0002224, which discharges to Illinois River. EPA’s file records it issued November 3, 2011 and expiring November 30, 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 filed	DRESDEN GENERATING STATION
Permittee as filed	EXELON GENERATION COMPANY LLC
NPDES ID	IL0002224
Permit status	Effective
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Not a publicly owned treatment works
Issued	November 3, 2011
Expiration date	November 30, 2016
Address	Morris, IL 60450
Receiving water	ILLINOIS RIVER
Receiving water impaired	303(D) Listed
Subwatershed	Kankakee River (HUC 071200011809)
Other EPA IDs (FRS)	RCRA handler ILD000665489; ICIS-AIR source IL000063806AAC

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

Effluent limits and exceedances

9Pollutants on file
9Under a numeric limit
9With a violation of any kind
4With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Temperature, water deg. fahrenheit	3	8	4	September 30, 2006	15% over the limit
Solids, total suspended	12	13	3	December 31, 2009	92% over the limit
pH	8	11	3	March 31, 2013
BOD, 5-day, 20 deg. C	4	1	1	October 31, 2004	22% over the limit
Flow, in conduit or thru treatment plant	14	12	0
Chlorine, total residual	6	5	0
Oil & Grease	2	4	0
Coliform, fecal general	1	4	0
Oil and grease	4	2	0

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IL0002224.

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 IL0002224 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers Clean Water Act discharge permit NPDES IL0002224 for DRESDEN GENERATING STATION in Morris, IL, held by EXELON GENERATION COMPANY LLC and discharging to Illinois River, with the permit status shown as Effective. The page lists 9 pollutants under a numeric limit and 4 pollutants with an effluent exceedance, with the permit's issue and expiration dates as EPA's file recorded them.