Warrenton Pws
Warrenton, MO · Warren County · Publicly Owned Treatment Works
- Average flow
- 1.16 MGD
- Design flow
- —
- NPDES permit
- MO0087912
- Effective
- Permit expires
- May 2030
- Population served
- 32,199
- CWNS 2022
Warrenton Pws is a publicly owned wastewater treatment plant in Warrenton, Warren County, Missouri treating an average of 1.16 million gallons per day, serving about 32,199 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches, biological treatment, other, biosolids aerobic digestion and other unit processes. It discharges under NPDES permit MO0087912 (effective), which expires in May 2030, with 24 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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Uncovered lagoons
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Carrousels / oxidation ditches
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Biological Treatment, Other
unit processBiosolids Aerobic Digestion
unit processFlow Equalization
unit processScreening
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 24
- Effluent violations
- 18
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Warrenton Pws.
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Nearby wastewater treatment plants in Missouri
Wright City · 4 mi away
0.07 MGD
Warrenton · 6 mi away
0.0012 MGD
Foristell · 9 mi away
0.01 MGD
Jonesburg · 10 mi away
0.06 MGD
Moscow Mills · 13 mi away
0.25 MGD
Troy · 13 mi away
1.16 MGD
High Hill · 14 mi away
0.003 MGD
Wentzville · 14 mi away
4.34 MGD
Warrenton Pws: 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 13, 2026.