Carlisle STP
Carlisle, KY · Nicholas County · Publicly Owned Treatment Works
- Average flow
- 0.28 MGD
- Design flow
- 0.35 MGD
- NPDES permit
- KY0020923
- Effective
- Permit expires
- June 2031
- Population served
- 2,074
- CWNS 2022
Carlisle STP is a publicly owned wastewater treatment works in Carlisle, Nicholas County, Kentucky treating an average of 0.28 million gallons per day against a permitted design capacity of 0.35 MGD, serving about 2,074 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit KY0020923 (effective), which expires in June 2031, with 132 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Aerated lagoons
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Uncovered lagoons
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Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 132
- Effluent violations
- 21
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Carlisle STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Carlisle STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Kentucky
Millersburg · 5 mi away
0.16 MGD
Paris · 12 mi away
1.37 MGD
North Middletown · 12 mi away
0.02 MGD
Cynthiana · 14 mi away
0.93 MGD
Mount Olivet · 15 mi away
0.02 MGD
Mt Sterling · 17 mi away
1.62 MGD
Flemingsburg · 20 mi away
0.35 MGD
Owingsville · 20 mi away
0.14 MGD
Carlisle STP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated November 26, 2025.