Clean Water Act discharge permit · NPDES ILG580268
OKAWVILLE STP, VILLAGE OF, Okawville, IL: NPDES ILG580268 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
OKAWVILLE STP, VILLAGE OF, held by OKAWVILLE, VILLAGE OF, holds NPDES permit ILG580268, which discharges to Plum Creek. EPA’s file records it issued October 3, 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 | OKAWVILLE STP, VILLAGE OF |
|---|---|
| Permittee as filed | OKAWVILLE, VILLAGE OF |
| NPDES ID | ILG580268 |
| 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 | October 3, 2014 |
| Expiration date | June 30, 2018 |
| Address | Okawville, IL 62271 |
| Receiving water | PLUM CREEK |
| Subwatershed | Plum Creek (HUC 071402020902) |
| 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
- 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 |
|---|---|---|---|---|---|
| BOD, carbonaceous [5 day, 20 C] | 4 | 15 | 5 | April 30, 2014 | 188% over the limit |
| pH | 2 | 2 | 2 | November 30, 2023 | |
| Solids, total suspended | 5 | 11 | 1 | April 30, 2014 | 3% over the limit |
| Oxygen, dissolved [DO] | 1 | 1 | 1 | January 31, 2017 | 73% over the limit |
| Chlorine, total residual | 1 | 40 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 4 | 0 | ||
| Coliform, fecal general | 1 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 0 | 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
- 12Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 27, 2026 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | ST6 |
| June 27, 2026 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | ST6 |
| May 8, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | ST6 |
| May 8, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | ST6 |
| April 29, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | ST6 |
| April 29, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | ST6 |
| April 5, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | ST6 |
| April 5, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | ST6 |
| April 5, 2025 | Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
| April 5, 2025 | Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
| April 4, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | ST6 |
| April 4, 2025 | Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
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 ILG580268 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.