Clean Water Act discharge permit · NPDES IL0027901
CARLYLE STP, CITY OF, Carlyle, IL: NPDES IL0027901 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
CARLYLE STP, CITY OF, held by CARLYLE, CITY OF, holds NPDES permit IL0027901, which discharges to Kaskaskia River. EPA’s file records it issued April 28, 2017 and expiring April 30, 2022. 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 | CARLYLE STP, CITY OF |
|---|---|
| Permittee as filed | CARLYLE, CITY OF |
| NPDES ID | IL0027901 |
| 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 28, 2017 |
| Expiration date | April 30, 2022 |
| Address | Carlyle, IL 62231 |
| Receiving water | KASKASKIA RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Little York Branch-Kaskaskia River (HUC 071402020901) |
| Program components on file | POTW, Pretreatment |
| 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
- 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 |
|---|---|---|---|---|---|
| Oxygen, dissolved [DO] | 5 | 71 | 71 | April 30, 2019 | 82% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 39 | 31 | February 28, 2014 | 176% over the limit |
| Solids, total suspended | 6 | 26 | 18 | March 31, 2026 | 195% over the limit |
| Chlorine, total residual | 4 | 29 | 17 | October 31, 2017 | 150% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 14 | 0 | ||
| pH | 2 | 4 | 0 | ||
| Coliform, fecal general | 2 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 0 | 0 | ||
| Phosphorus, total [as P] | 1 | 0 | 0 | ||
| Flow | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 10, 2025 | Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | ST6 |
| April 19, 2025 | Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | ST6 |
| April 5, 2025 | Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | 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 IL0027901 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.