Clean Water Act discharge permit · NPDES IL0036919
EXELON GENERATION COMPANY, LLC, Clinton, IL: NPDES IL0036919 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 13Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
EXELON GENERATION COMPANY, LLC, held by EXELON GENERATION COMPANY LLC, holds NPDES permit IL0036919, which discharges to Clinton Lake. EPA’s file records it issued September 29, 2011 and expiring September 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 | EXELON GENERATION COMPANY, LLC |
|---|---|
| Permittee as filed | EXELON GENERATION COMPANY LLC |
| NPDES ID | IL0036919 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 29, 2011 |
| Expiration date | September 30, 2016 |
| Address | Clinton, IL 61727 |
| Receiving water | CLINTON LAKE |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Goose Creek (HUC 071300060207) |
| Other EPA IDs (FRS) | RCRA handler ILD000806075; ICIS-AIR source IL000039804AAC |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 21Pollutants on file
- 13Under a numeric limit
- 15With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 5 | 22 | 8 | April 30, 2025 | 99,999% over the limit |
| Solids, total suspended | 14 | 39 | 7 | September 30, 2025 | 2,000% over the limit |
| pH | 14 | 41 | 3 | April 30, 2005 | |
| Oil and grease | 6 | 30 | 2 | April 30, 2014 | 35% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 18 | 2 | April 30, 2001 | 16% over the limit |
| Flow, in conduit or thru treatment plant | 20 | 52 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 8 | 0 | ||
| Toluene | 0 | 8 | 0 | ||
| Ethylbenzene | 0 | 8 | 0 | ||
| Xylene [mix of m+o+p] | 0 | 8 | 0 | ||
| Benzene, ethylbenzene, toluene, xylene combination | 0 | 4 | 0 | ||
| Benzene | 0 | 4 | 0 | ||
| Oxidants, total residual | 0 | 4 | 0 | ||
| Polyram | 0 | 4 | 0 | ||
| Solids, total dissolved- 180 deg. C | 0 | 4 | 0 | ||
| Zinc, total [as Zn] | 3 | 0 | 0 | ||
| Oil & Grease | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 1 | 0 | 0 | ||
| Chloride [as Cl] | 1 | 0 | 0 | ||
| Sulfate, total [as SO4] | 1 | 0 | 0 | ||
| Coliform, fecal general | 1 | 0 | 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 IL0036919.
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 IL0036919 there.
Nearby on the register
- Discharge permits in Clinton
- Every permit record in Clinton, A to Z
- Discharge permits in Illinois
- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.