Clean Water Act discharge permit · NPDES IL0023400
ILLINOIS AMERICAN WATER - MT PULASKI STP, Mount Pulaski, IL: NPDES IL0023400 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
ILLINOIS AMERICAN WATER - MT PULASKI STP, held by ILLINOIS AMERICAN WATER - MT PULASKI, holds NPDES permit IL0023400, which discharges to Unnamed Tributary Of Salt Creek. EPA’s file records it issued February 1, 2024 and expiring February 28, 2029. 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 | ILLINOIS AMERICAN WATER - MT PULASKI STP |
|---|---|
| Permittee as filed | ILLINOIS AMERICAN WATER - MT PULASKI |
| NPDES ID | IL0023400 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 1, 2024 |
| Expiration date | February 28, 2029 |
| Address | Mount Pulaski, IL 62548 |
| Receiving water | UNNAMED TRIBUTARY OF SALT CREEK |
| Subwatershed | Pine Lake-Middle Salt Creek (HUC 071300090405) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 1With a violation of any kind
- 1With 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 | 5 | 2 | 2 | March 31, 2024 | 30% over the limit |
| Oxygen, dissolved [DO] | 5 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 0 | 0 | ||
| Chlorine, total residual | 1 | 0 | 0 | ||
| Coliform, fecal general | 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 IL0023400.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IL0023400.
Start the watch
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- One watershed — $2,990/year
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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 IL0023400 there.
Nearby on the register
- Discharge permits in Mount Pulaski
- Every permit record in Mount Pulaski, A to Z
- Discharge permits in Illinois
- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.