Unionville Pws
Unionville, MO · Putnam County · Publicly Owned Treatment Works
- Average flow
- 0.09 MGD
- Design flow
- —
- NPDES permit
- MO0026646
- Effective
- Permit expires
- April 2029
- Population served
- 1,320
- CWNS 2022
Unionville Pws is a publicly owned wastewater treatment plant in Unionville, Putnam County, Missouri treating an average of 0.09 million gallons per day, serving about 1,320 residents. Treatment on site includes disinfection, chlorine/ chloramine, lagoon, facultative. It discharges under NPDES permit MO0026646 (effective), which expires in April 2029, with 30 recorded violations in the last three years. Planned upgrades on record: biological treatment, other, disinfection, uv, lagoon, aerobic.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Disinfection, chlorine/ chloramine
unit processLagoon, Facultative
unit processBiological Treatment, Other
planned upgradeDisinfection, UV
planned upgradeLagoon, Aerobic
planned upgradeUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 30
- Effluent violations
- 14
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Unionville Pws.
No verified contacts on file yet
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Nearby wastewater treatment plants in Missouri
Unionville · 1 mi away
0.09 MGD
Green City · 15 mi away
0.03 MGD
Green Castle · 16 mi away
0.004 MGD
Milan · 20 mi away
0.47 MGD
Novinger · 22 mi away
0.009 MGD
Queen City · 23 mi away
0.01 MGD
Lancaster · 25 mi away
0.08 MGD
Kirksville · 29 mi away
0.009 MGD
Unionville 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 14, 2024.