Clean Water Act discharge permit · NPDES KY0094447
SCIENCE HILL STP, Science Hill, KY: NPDES KY0094447 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 17Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
SCIENCE HILL STP, held by Science Hill STP, holds NPDES permit KY0094447, which discharges to Bobbitts Br / Big Clifty Crk. EPA’s file records it issued May 24, 2021 and expiring June 30, 2026. 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 | SCIENCE HILL STP |
|---|---|
| Permittee as filed | Science Hill STP |
| NPDES ID | KY0094447 |
| 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 24, 2021 |
| Expiration date | June 30, 2026 |
| Address | Science Hill, KY 42553 |
| Receiving water | BOBBITTS BR / BIG CLIFTY CRK |
| Subwatershed | Big Clifty Creek-Fishing Creek (HUC 051301030304) |
| NAICS | 221320 – Sewage Treatment Facilities |
| 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
- 18Pollutants on file
- 17Under a numeric limit
- 18With a violation of any kind
- 9With 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 | 46 | 34 | December 31, 2025 | 32,321% over the limit |
| E. coli | 2 | 44 | 34 | July 31, 2026 | 24,900% over the limit |
| Coliform, fecal general | 0 | 24 | 24 | March 31, 2010 | 75% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 76 | 18 | April 30, 2023 | 793% over the limit |
| Solids, total suspended | 6 | 64 | 14 | June 30, 2018 | 262% over the limit |
| Oxygen, dissolved [DO] | 1 | 13 | 8 | July 31, 2017 | 62% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 43 | 7 | January 31, 2017 | 193% over the limit |
| pH | 2 | 18 | 6 | April 30, 2025 | |
| BOD, carb-5 day, 20 deg C, percent removal | 1 | 7 | 2 | October 31, 2010 | 501% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 20 | 0 | ||
| Phosphorus, total [as P] | 6 | 14 | 0 | ||
| Nitrogen, total [as N] | 4 | 12 | 0 | ||
| Solids, suspended percent removal | 1 | 5 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 2 | 0 | ||
| Oil & Grease | 2 | 2 | 0 | ||
| Nitrogen, Kjeldahl Total | 2 | 2 | 0 | ||
| Nitrite Plus Nitrate Total | 2 | 2 | 0 | ||
| Solids, total dissolved [TDS] | 2 | 2 | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 25, 2026 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 25, 2026 | Monitoring Violations - No Flow Measurement Device | ST6 |
| June 25, 2026 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| June 25, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| April 2, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| April 2, 2025 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 26, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| March 26, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 12, 2023 | Permit Violations - Violation Specified in Comment | 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
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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 KY0094447 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 October 14, 2026.