Clean Water Act discharge permit · NPDES IL0023281
GIBSON CITY WPCF, CITY OF, Gibson City, IL: NPDES IL0023281 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
GIBSON CITY WPCF, CITY OF, held by GIBSON CITY, CITY OF, holds NPDES permit IL0023281, which discharges to Drummer Creek. EPA’s file records it issued April 12, 2016 and expiring April 30, 2021. 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 | GIBSON CITY WPCF, CITY OF |
|---|---|
| Permittee as filed | GIBSON CITY, CITY OF |
| NPDES ID | IL0023281 |
| 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 | April 12, 2016 |
| Expiration date | April 30, 2021 |
| Address | Gibson City, IL 60936 |
| Receiving water | DRUMMER CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | West Branch Drummer Creek (HUC 071300060104) |
| Program components on file | Biosolids, CSO, POTW |
| 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
- 16Pollutants on file
- 12Under a numeric limit
- 15With a violation of any kind
- 7With 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 | 8 | 89 | 77 | May 31, 2025 | 204% over the limit |
| Nitrogen, ammonia total [as N] | 20 | 48 | 30 | July 31, 2026 | 385% over the limit |
| Chlorine, total residual | 3 | 11 | 6 | July 31, 2026 | 193% over the limit |
| Oxygen, dissolved [DO] | 8 | 17 | 5 | July 31, 2025 | 23% over the limit |
| Coliform, fecal general | 2 | 5 | 3 | June 30, 2026 | 1,740% over the limit |
| pH | 6 | 16 | 2 | April 30, 2026 | |
| BOD, carbonaceous [5 day, 20 C] | 4 | 5 | 1 | April 30, 2026 | 2% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 6 | 0 | ||
| Rainfall | 0 | 6 | 0 | ||
| Flow, total | 2 | 5 | 0 | ||
| Nitrate nitrogen, dry weight | 0 | 2 | 0 | ||
| Overflows | 1 | 1 | 0 | ||
| Rainfall duration | 0 | 1 | 0 | ||
| Duration | 0 | 1 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 19, 2025 | Dry-weather SSO, no 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.
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Nearby on the register
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- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.