Clean Water Act discharge permit · NPDES IL0023345
MILLEDGEVILLE STP, VILLAGE OF, Milledgeville, IL: NPDES IL0023345 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MILLEDGEVILLE STP, VILLAGE OF, held by MILLEDGEVILLE, VILLAGE OF, holds NPDES permit IL0023345, which discharges to Elkhorn Creek. EPA’s file records it issued May 9, 2019 and expiring April 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 | MILLEDGEVILLE STP, VILLAGE OF |
|---|---|
| Permittee as filed | MILLEDGEVILLE, VILLAGE OF |
| NPDES ID | IL0023345 |
| 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 | May 9, 2019 |
| Expiration date | April 30, 2024 |
| Address | Milledgeville, IL 61051 |
| Receiving water | ELKHORN CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Goose Creek-Elkhorn River (HUC 070900050706) |
| Program components on file | Biosolids, POTW |
| 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
- 9Pollutants on file
- 9Under a numeric limit
- 9With 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 | 70 | 70 | October 31, 2025 | 52% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 28 | 22 | April 30, 2025 | 135% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 22 | 10 | April 30, 2011 | 60% over the limit |
| Solids, total suspended | 5 | 23 | 8 | April 30, 2025 | 42% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 10 | 0 | ||
| pH | 2 | 6 | 0 | ||
| Chlorine, total residual | 1 | 4 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 2 | 0 | ||
| Coliform, fecal general | 1 | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 20, 2024 | Dry-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
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, IL0023345.
Start the watch
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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 IL0023345 there.
Nearby on the register
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- Every permit record in Milledgeville, 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.