Pendleton WWTF
Warrenton, MO · Warren County · Publicly Owned Treatment Works
- Average flow
- 0.0012 MGD
- Design flow
- 0.01 MGD
- NPDES permit
- MO0136093
- Effective
- Permit expires
- June 2021
- Population served
- 164
- CWNS 2022
Pendleton WWTF is a publicly owned wastewater treatment works in Warrenton, Warren County, Missouri treating an average of 0.0012 million gallons per day against a permitted design capacity of 0.01 MGD, serving about 164 residents. Treatment on site includes attached growth, aerobic, dechlorination, disinfection, chlorine/ chloramine, screening. It discharges under NPDES permit MO0136093 (effective), which expires in June 2021, with 42 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Attached Growth, Aerobic
unit processDechlorination
unit processDisinfection, chlorine/ chloramine
unit processScreening
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 42
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Pendleton WWTF.
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Nearby wastewater treatment plants in Missouri
Jonesburg · 5 mi away
0.06 MGD
Warrenton · 6 mi away
1.16 MGD
High Hill · 8 mi away
0.003 MGD
Wright City · 10 mi away
0.07 MGD
Berger · 12 mi away
0.003 MGD
Hermann · 13 mi away
0.34 MGD
Bellflower · 14 mi away
—
New Haven · 15 mi away
0.17 MGD
Pendleton WWTF: 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 September 4, 2024.