Clean Water Act discharge permit · NPDES IL0079197
STILLMAN VALLEY STP, VILLAGE OF, Stillman Valley, IL: NPDES IL0079197 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
STILLMAN VALLEY STP, VILLAGE OF, held by STILLMAN VALLEY, VILLAGE OF, holds NPDES permit IL0079197, which discharges to Stillman Creek. EPA’s file records it issued September 30, 2019 and expiring September 30, 2024. 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 | STILLMAN VALLEY STP, VILLAGE OF |
|---|---|
| Permittee as filed | STILLMAN VALLEY, VILLAGE OF |
| NPDES ID | IL0079197 |
| 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 30, 2019 |
| Expiration date | September 30, 2024 |
| Address | Stillman Valley, IL 61084 |
| Receiving water | STILLMAN CREEK |
| Subwatershed | Town of Stillman Valley-Stillman Creek (HUC 070900050404) |
| 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
- 11Pollutants on file
- 11Under a numeric limit
- 11With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 14 | 78 | 12 | April 30, 2025 | 236% over the limit |
| Solids, total suspended | 5 | 79 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 64 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 62 | 0 | ||
| Oxygen, dissolved [DO] | 5 | 39 | 0 | ||
| pH | 2 | 32 | 0 | ||
| Nitrogen, total [as N] | 1 | 16 | 0 | ||
| Phosphorus, total [as P] | 1 | 16 | 0 | ||
| Chlorine, total residual | 1 | 16 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 15 | 0 | ||
| Coliform, fecal general | 1 | 8 | 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 IL0079197.
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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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 IL0079197 there.
Nearby on the register
- Discharge permits in Stillman Valley
- Every permit record in Stillman Valley, A to Z
- Discharge permits in Illinois
- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.