Clean Water Act discharge permit · NPDES IL0055506
PERE MARQUETTE STATE PARK - STP, Grafton, IL: NPDES IL0055506 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
PERE MARQUETTE STATE PARK - STP, held by ILLINOIS DEPARTMENT OF NATURAL RESOURCES, holds NPDES permit IL0055506, which discharges to Illinois River. EPA’s file records it issued September 12, 2016 and expiring September 30, 2021. 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 | PERE MARQUETTE STATE PARK - STP |
|---|---|
| Permittee as filed | ILLINOIS DEPARTMENT OF NATURAL RESOURCES |
| NPDES ID | IL0055506 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 12, 2016 |
| Expiration date | September 30, 2021 |
| Address | Grafton, IL 62037 |
| Receiving water | ILLINOIS RIVER |
| Subwatershed | Possum Creek-Illinois River (HUC 071300111006) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 8Under a numeric limit
- 7With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 1 | 72 | 60 | July 31, 2025 | 99,999% over the limit |
| Solids, total suspended | 5 | 128 | 30 | June 30, 2008 | 97% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 103 | 21 | September 30, 2013 | 164% over the limit |
| Chlorine, total residual | 2 | 43 | 14 | October 31, 2025 | 97,700% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 92 | 0 | ||
| pH | 2 | 40 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 20 | 0 | ||
| Nitrogen, ammonia total [as N] | 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 IL0055506.
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, IL0055506.
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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 IL0055506 there.
Nearby on the register
- Discharge permits in Grafton
- Every permit record in Grafton, 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.