Clean Water Act discharge permit · NPDES IL0037206
CENTRAL HIGH SCHOOL AND NASH MIDDLE SCHOOL STP, Clifton, IL: NPDES IL0037206 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
CENTRAL HIGH SCHOOL AND NASH MIDDLE SCHOOL STP, held by CENTRAL HIGH SCHOOL AND NASH MIDDLE SCHOOL, holds NPDES permit IL0037206, which discharges to Unnamed Trib To Langen Creek. EPA’s file records it issued February 28, 2018 and expiring February 28, 2023. 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 | CENTRAL HIGH SCHOOL AND NASH MIDDLE SCHOOL STP |
|---|---|
| Permittee as filed | CENTRAL HIGH SCHOOL AND NASH MIDDLE SCHOOL |
| NPDES ID | IL0037206 |
| 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 |
| Program | Biosolids |
| Issued | February 28, 2018 |
| Expiration date | February 28, 2023 |
| Address | Clifton, IL 60927 |
| Receiving water | UNNAMED TRIB TO LANGEN CREEK |
| Subwatershed | Langan Creek (HUC 071200021202) |
| SIC | 8211 – Elementary And Secondary Schools |
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
- 8Pollutants on file
- 8Under a numeric limit
- 8With a violation of any kind
- 3With 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] | 16 | 667 | 610 | May 31, 2026 | 5,638% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 164 | 120 | March 31, 2026 | 690% over the limit |
| Solids, total suspended | 4 | 149 | 109 | February 28, 2026 | 525% over the limit |
| Oxygen, dissolved [DO] | 5 | 27 | 0 | ||
| pH | 2 | 22 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 22 | 0 | ||
| Chlorine, total residual | 1 | 11 | 0 | ||
| Coliform, fecal general | 1 | 9 | 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 IL0037206.
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 IL0037206 there.
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.