Benton STP
Benton, KY · Marshall County · Publicly Owned Treatment Works
- Average flow
- 0.53 MGD
- Design flow
- 1 MGD
- NPDES permit
- KY0021172
- Effective
- Permit expires
- September 2029
- Population served
- 5,068
- CWNS 2022
Benton STP is a publicly owned wastewater treatment works in Benton, Marshall County, Kentucky treating an average of 0.53 million gallons per day against a permitted design capacity of 1 MGD, serving about 5,068 residents. Treatment on site includes aerated lagoons, uncovered lagoons. It discharges under NPDES permit KY0021172 (effective), which expires in September 2029, with 7 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
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Benton STP.
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Nearby wastewater treatment plants in Kentucky
Draffenville · 4 mi away
0.2 MGD
Hardin · 7 mi away
0.04 MGD
Symsonia · 10 mi away
0.09 MGD
Aurora · 13 mi away
0.04 MGD
Grand Rivers · 13 mi away
0.13 MGD
Ledbetter · 14 mi away
0.09 MGD
Reidland · 14 mi away
0.32 MGD
Murray · 17 mi away
2.83 MGD
Benton 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 March 30, 2025.