Clean Water Act discharge permit · NPDES IN0023353
FOUR MILE HILL STP, Kokomo, IN: NPDES IN0023353 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
FOUR MILE HILL STP, held by FOUR MILE HILL WWTP, holds NPDES permit IN0023353, which discharges to Wildcat Cr To Wabash River. EPA’s file records it issued July 29, 2020 and expiring September 30, 2025. 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 | FOUR MILE HILL STP |
|---|---|
| Permittee as filed | FOUR MILE HILL WWTP |
| NPDES ID | IN0023353 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 29, 2020 |
| Expiration date | September 30, 2025 |
| Issuing agency | IDEM |
| Address | Kokomo, IN 46901 |
| Receiving water | WILDCAT CR TO WABASH RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Kitty Run-Wildcat Creek (HUC 051201070403) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 9Under a numeric limit
- 10With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| E. coli, colony forming units [CFU] | 3 | 61 | 29 | May 31, 2024 | 2,296% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 132 | 26 | April 30, 2016 | 1,766% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 123 | 17 | February 28, 2026 | 189% over the limit |
| Chlorine, total residual | 4 | 69 | 5 | May 31, 2013 | 100% over the limit |
| Solids, total suspended | 4 | 109 | 3 | May 31, 2012 | 566% over the limit |
| pH | 2 | 50 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 35 | 0 | ||
| Flow, total | 1 | 27 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 0 | 2 | 0 | ||
| Solids, suspended percent removal | 0 | 2 | 0 | ||
| Number of Events | 2 | 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 IN0023353.
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, IN0023353.
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 IN0023353 there.
Nearby on the register
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- Every permit record in Indiana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.