Mount Washington STP
Mt Washington, KY · Bullitt County · Publicly Owned Treatment Works
- Average flow
- 0.91 MGD
- Design flow
- 3.5 MGD
- NPDES permit
- KY0033804
- Effective
- Permit expires
- November 2030
- Population served
- 19,466
- CWNS 2022
Mount Washington STP is a publicly owned wastewater treatment works in Mt Washington, Bullitt County, Kentucky treating an average of 0.91 million gallons per day against a permitted design capacity of 3.5 MGD, serving about 19,466 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit KY0033804 (effective), which expires in November 2030, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Mount Washington STP.
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Nearby wastewater treatment plants in Kentucky
Brooks · 8 mi away
0.05 MGD
Shepherdsville · 8 mi away
0.06 MGD
Shepherdsville · 10 mi away
0.0031 MGD
Taylorsville · 11 mi away
0.22 MGD
Bloomfield · 15 mi away
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Bardstown · 17 mi away
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Lebanon Junction · 18 mi away
0.1 MGD
Simpsonville · 18 mi away
0.27 MGD
Mount Washington 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 August 11, 2026.