Farmington Pws
Farmington, MO · St Francois County · Publicly Owned Treatment Works
- Average flow
- 0.98 MGD
- Design flow
- —
- NPDES permit
- MO0040312
- Administratively continued
- Permit expires
- December 2021
- Population served
- 16,000
- CWNS 2022
Farmington Pws is a publicly owned wastewater treatment plant in Farmington, St Francois County, Missouri treating an average of 0.98 million gallons per day, serving about 16,000 residents. Treatment on site includes clarifiers, uncovered lagoons, biosolids aerobic digestion, biosolids mechanical dewatering, disinfection, uv and other unit processes. It discharges under NPDES permit MO0040312 (administratively continued), which expires in December 2021, with 5 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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Biosolids Aerobic Digestion
unit processBiosolids Mechanical Dewatering
unit processDisinfection, UV
unit processFlow Equalization
unit processLagoon, Aerobic
unit processScreening
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 5
- Effluent violations
- 5
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Farmington Pws.
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Nearby wastewater treatment plants in Missouri
Farmington · 3 mi away
1.04 MGD
Bonne Terre · 9 mi away
1.14 MGD
Bismarck · 10 mi away
0.01 MGD
Bismarck · 10 mi away
0.08 MGD
Leadwood · 11 mi away
0.07 MGD
Bonne Terre · 12 mi away
0.24 MGD
Bonne Terre · 14 mi away
0.23 MGD
Arcadia · 15 mi away
0.02 MGD
Farmington 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 April 5, 2025.