Clean Water Act discharge permit · NPDES IL0001571
DYNEGY MIDWEST GENERATION LLC, Havana, IL: NPDES IL0001571 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 32Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
DYNEGY MIDWEST GENERATION LLC, held by DYNEGY MIDWEST GENERATION, INC, holds NPDES permit IL0001571, which discharges to Illinois River. EPA’s file records it issued September 14, 2012 and expiring September 30, 2017. 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 filed | DYNEGY MIDWEST GENERATION LLC |
|---|---|
| Permittee as filed | DYNEGY MIDWEST GENERATION, INC |
| NPDES ID | IL0001571 |
| 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 14, 2012 |
| Expiration date | September 30, 2017 |
| Address | Havana, IL 62644 |
| Receiving water | ILLINOIS RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Montanzas Lake (HUC 071300031002) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 33Pollutants on file
- 32Under a numeric limit
- 31With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 10 | 11 | 6 | May 31, 2021 | 100% over the limit |
| pH | 8 | 9 | 5 | January 31, 2020 | |
| Flow, in conduit or thru treatment plant | 12 | 10 | 0 | ||
| Mercury, total [as Hg] | 6 | 6 | 0 | ||
| Oil and grease | 6 | 5 | 0 | ||
| Chlorination duration | 1 | 4 | 0 | ||
| Chlorine usage | 1 | 4 | 0 | ||
| Chlorination frequency | 1 | 3 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 2 | 0 | ||
| Chlorine, total residual | 3 | 1 | 0 | ||
| Toluene | 2 | 1 | 0 | ||
| Benzene | 2 | 1 | 0 | ||
| Acenaphthylene | 2 | 1 | 0 | ||
| Acenaphthene | 2 | 1 | 0 | ||
| Anthracene | 2 | 1 | 0 | ||
| Benzo[b]fluoranthene | 2 | 1 | 0 | ||
| Benzo[k]fluoranthene | 2 | 1 | 0 | ||
| Benzo[a]pyrene | 2 | 1 | 0 | ||
| Chrysene | 2 | 1 | 0 | ||
| Ethylbenzene | 2 | 1 | 0 | ||
| Fluoranthene | 2 | 1 | 0 | ||
| Fluorene | 2 | 1 | 0 | ||
| Indeno[1,2,3-cd]pyrene | 2 | 1 | 0 | ||
| Phenanthrene | 2 | 1 | 0 | ||
| Pyrene | 2 | 1 | 0 | ||
| Benzo[ghi]perylene | 2 | 1 | 0 | ||
| Benzo[a]anthracene | 2 | 1 | 0 | ||
| Dibenz[a,h]anthracene | 2 | 1 | 0 | ||
| Naphthalene | 2 | 1 | 0 | ||
| Xylene [mix of m+o+p] | 2 | 1 | 0 | ||
| Oil & Grease | 0 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 4 | 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 IL0001571.
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, IL0001571.
Start the watch
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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 IL0001571 there.
Nearby on the register
- Discharge permits in Havana
- Every permit record in Havana, A to Z
- Discharge permits in Illinois
- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.