Clean Water Act discharge permit · NPDES KY0091634
GRANT COUNTY STP, Dry Ridge, KY: NPDES KY0091634 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 17Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
- 1Inspections on file
- 0Formal enforcement actions
GRANT COUNTY STP, held by Grant County STP, holds NPDES permit KY0091634, which discharges to Grassy Crk. EPA’s file records it issued September 24, 2018 and expiring October 31, 2023.
GRANT COUNTY STP, Dry Ridge, Kentucky: Individual permit KY0091634, held by Grant County STP; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 24, 2018, term to October 31, 2023; discharges to GRASSY CRK; Sewage Treatment Facilities.
- Chlorine, total residual: 2 limits, 42 violations of any kind, 28 effluent exceedances, latest June 30, 2022, largest 809% over the limit.
- E. coli: 2 limits, 18 violations of any kind, 14 effluent exceedances, latest October 31, 2025, largest 1,555% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 6 limits, 39 violations of any kind, 13 effluent exceedances, latest July 31, 2025, largest 413% over the limit.
- Solids, total suspended: 6 limits, 33 violations of any kind, 13 effluent exceedances, latest January 31, 2022, largest 3,404% over the limit.
- Nitrogen, ammonia total [as N]: 8 limits, 27 violations of any kind, 9 effluent exceedances, latest October 31, 2025, largest 745% over the limit.
- Solids, suspended percent removal: 1 limit, 11 violations of any kind, 5 effluent exceedances, latest October 31, 2021, largest 33% over the limit.
- Coliform, fecal general: 0 limits, 6 violations of any kind, 2 effluent exceedances, latest October 31, 2004, largest 130% over the limit.
- Oxygen, dissolved [DO]: 1 limit, 4 violations of any kind, 2 effluent exceedances, latest November 30, 2023, largest 2% over the limit.
- pH: 2 limits, 6 violations of any kind, 1 effluent exceedance, latest June 30, 2020.
- Phosphorus, total [as P]: 6 limits, 6 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 4 limits, 6 violations of any kind, 0 effluent exceedances.
- BOD, carb-5 day, 20 deg C, percent removal: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- Oil & Grease: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Nitrogen, total [as N]: 4 limits, 2 violations of any kind, 0 effluent exceedances.
- Temperature, water deg. fahrenheit: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Nitrogen, Kjeldahl Total: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Nitrite Plus Nitrate Total: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Solids, total dissolved [TDS]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- September 8, 2026: Permit Violations - Violation Specified in Comment (ST6).
- September 8, 2026: Evaluation (S).
- August 6, 2026: Notice of Violation (State).
- April 29, 2025: Effluent Violations - Narrative Effluent Violation (ST6).
- July 29, 2020: Management Practice Violations - Improper Operation and Maintenance (ST6).
- July 29, 2020: Effluent Violations - Narrative Effluent Violation (ST6).
- July 29, 2020: Permit Violations - Violation Specified in Comment (ST6).
- September 27, 2019: Effluent Violations - Narrative Effluent Violation (ST6).
- September 27, 2019: Management Practice Violations - Improper Operation and Maintenance (ST6).
- June 28, 2018: Monitoring Violations - No Flow Measurement Device (ST6).
- June 28, 2018: Effluent Violations - Narrative Effluent Violation (ST6).
- June 28, 2018: Management Practice Violations - Improper Operation and Maintenance (ST6).
- July 24, 2017: Effluent Violations - Narrative Effluent Violation (ST6).
- July 24, 2017: Management Practice Violations - Improper Operation and Maintenance (ST6).
- July 24, 2017: Monitoring Violations - No Flow Measurement Device (ST6).
- July 24, 2017: Permit Violations - Violation Specified in Comment (ST6).
Kentucky holds 294 Publicly owned treatment works coverages of this permit type in EPA’s file; 185 were issued before KY0091634.
Coverages issued nearest KY0091634
- September 11, 2018: ADAIRVILLE STP, Adairville, KY0020885, held by Adairville STP
- September 14, 2018: RED RIVER WWTP, Stanton, KY0034428, held by Red River WWTP
- September 14, 2018: GEORGETOWN STP #3, Stamping Ground, KY0050512, held by Georgetown STP #3
- September 14, 2018: SIMPSONVILLE STP, Simpsonville, KY0065889, held by Simpsonville STP
- September 24, 2018: SOUTH HOPKINS REGIONAL WWTP, Nortonville, KY0066583, held by South Hopkins Regional WWTP
- September 26, 2018: BENTON STP, Benton, KY0021172, held by Benton STP
- October 3, 2018: CMUC STP, Morgantown, KY0021024, held by Cmuc STP
- October 16, 2018: MARTIN STP, Martin, KY0026921, held by Martin STP
- October 29, 2018: CALHOUN WWTP, Calhoun, KY0020125, held by Calhoun WWTP
- November 7, 2018: EXECUTIVE PARK SUBDIVISION NMCSD, Berea, KY0056561, held by Executive Park Subdivision NMCSD
GRANT COUNTY STP among its neighbors
EPA’s permit file holds 3 discharge permits in the Upper Ten Mile Creek subwatershed (HUC 051002051401), KY0091634 among them. Its county holds 51, 1 of them major permits; KY0091634 is a minor permit.
Other permits in the Upper Ten Mile Creek subwatershed (HUC 051002051401)
- SEVEN HILLS ROD & GUN CLUB, Crittenden: KY0072681, minor permit, discharging to BULLOCK PEN CRK, permit term to November 30, 2023
- WALTON VERONA ELEMENTARY SCHOOL, Verona: KY0035327, minor permit, discharging to TEN MILE CRK / NORTH FORK, permit term to September 30, 2022
Identity
| Facility as filed | GRANT COUNTY STP |
|---|---|
| Permittee as filed | Grant County STP |
| NPDES ID | KY0091634 |
| 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 | September 24, 2018 |
| Expiration date | October 31, 2023 |
| Address | Dry Ridge, KY 41035 |
| Receiving water | GRASSY CRK |
| Subwatershed | Upper Ten Mile Creek (HUC 051002051401) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 18Pollutants on file
- 17Under a numeric limit
- 14With 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 | 42 | 28 | June 30, 2022 | 809% over the limit |
| E. coli | 2 | 18 | 14 | October 31, 2025 | 1,555% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 39 | 13 | July 31, 2025 | 413% over the limit |
| Solids, total suspended | 6 | 33 | 13 | January 31, 2022 | 3,404% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 27 | 9 | October 31, 2025 | 745% over the limit |
| Solids, suspended percent removal | 1 | 11 | 5 | October 31, 2021 | 33% over the limit |
| Coliform, fecal general | 0 | 6 | 2 | October 31, 2004 | 130% over the limit |
| Oxygen, dissolved [DO] | 1 | 4 | 2 | November 30, 2023 | 2% over the limit |
| pH | 2 | 6 | 1 | June 30, 2020 | |
| Phosphorus, total [as P] | 6 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 6 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 1 | 6 | 0 | ||
| Oil & Grease | 2 | 4 | 0 | ||
| Nitrogen, total [as N] | 4 | 2 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 0 | 0 | ||
| Nitrogen, Kjeldahl Total | 2 | 0 | 0 | ||
| Nitrite Plus Nitrate Total | 2 | 0 | 0 | ||
| Solids, total dissolved [TDS] | 2 | 0 | 0 |
Inspections, violations and enforcement
- 14Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 8, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| April 29, 2025 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 29, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| July 29, 2020 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 29, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| September 27, 2019 | Effluent Violations - Narrative Effluent Violation | ST6 |
| September 27, 2019 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 28, 2018 | Monitoring Violations - No Flow Measurement Device | ST6 |
| June 28, 2018 | Effluent Violations - Narrative Effluent Violation | ST6 |
| June 28, 2018 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| July 24, 2017 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 24, 2017 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| July 24, 2017 | Monitoring Violations - No Flow Measurement Device | ST6 |
| July 24, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| September 8, 2026 | Evaluation | S |
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| August 6, 2026 | Notice of Violation | State |
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.