Clean Water Act discharge permit · NPDES IL0021792
WENONA STP, CITY OF, Wenona, IL: NPDES IL0021792 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
WENONA STP, CITY OF, held by WENONA, CITY OF, holds NPDES permit IL0021792, which discharges to Unnamed Trib To Sandy Creek. EPA’s file records it issued December 15, 2017 and expiring December 31, 2022. 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 | WENONA STP, CITY OF |
|---|---|
| Permittee as filed | WENONA, CITY OF |
| NPDES ID | IL0021792 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 15, 2017 |
| Expiration date | December 31, 2022 |
| Address | Wenona, IL 61377 |
| Receiving water | UNNAMED TRIB TO SANDY CREEK |
| Subwatershed | Headwaters Sandy Creek (HUC 071300010901) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 11Under a numeric limit
- 13With a violation of any kind
- 6With 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 | 7 | 130 | 110 | February 28, 2025 | 224% over the limit |
| Oxygen, dissolved [DO] | 6 | 37 | 33 | October 31, 2023 | 100% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 44 | 32 | February 28, 2025 | 472% over the limit |
| Coliform, fecal general | 2 | 31 | 26 | April 30, 2024 | 6,400% over the limit |
| pH | 4 | 15 | 3 | March 31, 2023 | |
| Chlorine, total residual | 2 | 9 | 3 | June 30, 2019 | 20% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 16 | 0 | ||
| BOD, 5-day, 20 deg. C | 3 | 8 | 0 | ||
| Flow | 0 | 7 | 0 | ||
| Solids, total dissolved | 0 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 3 | 0 | ||
| Flow, total | 1 | 2 | 0 | ||
| Manganese, total [as Mn] | 0 | 2 | 0 | ||
| Overflows | 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 IL0021792.
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 IL0021792 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.