Clean Water Act discharge permit · NPDES KY0021041
BUTLER STP, Butler, KY: NPDES KY0021041 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 19Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
BUTLER STP, held by Butler STP, holds NPDES permit KY0021041, which discharges to Licking River. EPA’s file records it issued April 5, 2016 and expiring May 31, 2021. 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 | BUTLER STP |
|---|---|
| Permittee as filed | Butler STP |
| NPDES ID | KY0021041 |
| 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 | April 5, 2016 |
| Expiration date | May 31, 2021 |
| Address | Butler, KY 41006 |
| Receiving water | LICKING RIVER |
| Subwatershed | Tate Creek (HUC 051002050306) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 24Pollutants on file
- 19Under a numeric limit
- 19With a violation of any kind
- 10With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 2 | 185 | 181 | November 30, 2023 | 75,689% over the limit |
| Oxygen, dissolved [DO] | 1 | 123 | 121 | August 31, 2025 | 99,999% over the limit |
| E. coli | 2 | 107 | 102 | July 31, 2026 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 55 | 39 | July 31, 2026 | 99,999% over the limit |
| Coliform, fecal general | 0 | 34 | 34 | October 31, 2007 | 99,999% over the limit |
| BOD, 5-day, percent removal | 1 | 34 | 32 | December 31, 2024 | 567% over the limit |
| Solids, suspended percent removal | 1 | 34 | 32 | July 31, 2026 | 567% over the limit |
| pH | 2 | 28 | 23 | February 28, 2026 | |
| Solids, total suspended | 6 | 37 | 21 | July 31, 2026 | 1,033% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 25 | 5 | September 30, 2022 | 159% over the limit |
| Phosphorus, total [as P] | 4 | 6 | 0 | ||
| Nitrogen, total [as N] | 2 | 6 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 4 | 0 | ||
| Zinc, total recoverable | 0 | 4 | 0 | ||
| Cadmium, total recoverable | 0 | 4 | 0 | ||
| Lead, total recoverable | 0 | 4 | 0 | ||
| Copper, total recoverable | 0 | 4 | 0 | ||
| Toxicity, final conc toxicity units | 2 | 2 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 0 | 0 | ||
| Oil & Grease | 2 | 0 | 0 | ||
| Nitrogen, Kjeldahl Total | 2 | 0 | 0 | ||
| Nitrite Plus Nitrate Total | 2 | 0 | 0 | ||
| Solids, total dissolved [TDS] | 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 KY0021041.
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 KY0021041 there.
Nearby on the register
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- Every permit record in Kentucky, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.