Clean Water Act discharge permit · NPDES ILG580092
WILLOW HILL STP, VILLAGE OF, Willow Hill, IL: NPDES ILG580092 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
WILLOW HILL STP, VILLAGE OF, held by WILLOW HILL, VILLAGE OF, holds NPDES permit ILG580092, which discharges to Hickory Creek. EPA’s file records it issued April 30, 2014 and expiring June 30, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | WILLOW HILL STP, VILLAGE OF |
|---|---|
| Permittee as filed | WILLOW HILL, VILLAGE OF |
| NPDES ID | ILG580092 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 30, 2014 |
| Expiration date | June 30, 2018 |
| Address | Willow Hill, IL 62480 |
| Receiving water | HICKORY CREEK |
| Subwatershed | Hickory Creek-North Fork Embarras River (HUC 051201121011) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
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 |
|---|---|---|---|---|---|
| Oxygen, dissolved [DO] | 1 | 40 | 34 | August 31, 2024 | 60% over the limit |
| Solids, total suspended | 5 | 60 | 5 | September 30, 2015 | 132% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 48 | 4 | March 31, 2017 | 28% over the limit |
| pH | 2 | 25 | 3 | April 30, 2006 | |
| Flow, in conduit or thru treatment plant | 4 | 47 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 11 | 0 | ||
| Chlorine, total residual | 1 | 8 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 6 | 0 | ||
| Coliform, fecal general | 1 | 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 ILG580092.
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
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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 ILG580092 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.