Clean Water Act discharge permit · NPDES IL0023728
EVONIK CORPORATION, Mapleton, IL: NPDES IL0023728 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
EVONIK CORPORATION holds NPDES permit IL0023728, which discharges to Pond Lily Lake Trib To Illinois River. EPA’s file records it issued June 11, 2019 and expiring June 30, 2024. 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 | EVONIK CORPORATION |
|---|---|
| Permittee as filed | EVONIK CORPORATION |
| NPDES ID | IL0023728 |
| 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 | June 11, 2019 |
| Expiration date | June 30, 2024 |
| Address | Mapleton, IL 61547 |
| Receiving water | POND LILY LAKE TRIB TO ILLINOIS RIVER |
| Subwatershed | Pekin Lake-Illinois River (HUC 071300030304) |
| SIC | 2843 – Surface Active Agents |
| Other EPA IDs (FRS) | RCRA handler ILD095792859; ICIS-AIR source IL000143805AAA |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 8Pollutants on file
- 6Under a numeric limit
- 8With 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 | 2 | 76 | 34 | April 30, 2026 | 84% over the limit |
| Chlorine, total residual | 2 | 35 | 17 | July 31, 2026 | 3,900% over the limit |
| Zinc, total [as Zn] | 4 | 23 | 13 | November 30, 2024 | 39,114% over the limit |
| pH | 2 | 25 | 8 | August 31, 2014 | |
| BOD, 5-day, 20 deg. C | 0 | 65 | 5 | July 31, 2007 | 100% over the limit |
| Sulfate, total [as SO4] | 0 | 19 | 3 | July 31, 2016 | 26% over the limit |
| Temperature, water deg. fahrenheit | 2 | 9 | 3 | March 31, 2024 | 5% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 8 | 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 IL0023728.
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 IL0023728 there.
Nearby on the register
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- Every permit record in Mapleton, A to Z
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- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.