Clean Water Act discharge permit · NPDES IL0024163
CATERPILLAR, INC. - PEORIA PROVING GROUND, Washington, IL: NPDES IL0024163 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
CATERPILLAR, INC. - PEORIA PROVING GROUND, held by CATERPILLAR INC, holds NPDES permit IL0024163, which discharges to Tenmile Creek. EPA’s file records it issued November 19, 2019 and expiring November 30, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CATERPILLAR, INC. - PEORIA PROVING GROUND |
|---|---|
| Permittee as filed | CATERPILLAR INC |
| NPDES ID | IL0024163 |
| 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 |
| Issued | November 19, 2019 |
| Expiration date | November 30, 2024 |
| Address | Washington, IL 61571 |
| Receiving water | TENMILE CREEK |
| Subwatershed | Tenmile Creek-Illinois River (HUC 071300011705) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 8Under 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 |
|---|---|---|---|---|---|
| pH | 2 | 7 | 5 | April 30, 2025 | |
| BOD, 5-day, 20 deg. C | 4 | 7 | 3 | October 31, 2014 | 127% over the limit |
| Solids, total suspended | 4 | 5 | 1 | April 30, 2025 | 5% over the limit |
| Chlorine, total residual | 1 | 2 | 1 | July 31, 2026 | 140% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 9 | 0 | ||
| Oil & Grease | 4 | 8 | 0 | ||
| Oil and grease | 0 | 6 | 0 | ||
| Iron, total [as Fe] | 4 | 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 IL0024163.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 IL0024163 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.