De Soto WWTP
9511 Hwy P, De Soto, MO 63020 · Jefferson County · Publicly Owned Treatment Works
- Average flow
- 0.74 MGD
- Design flow
- —
- NPDES permit
- MO0026662
- Administratively continued
- Permit expires
- June 2022
- Population served
- 6,359
- CWNS 2022
De Soto WWTP is a publicly owned wastewater treatment works in De Soto, Jefferson County, Missouri treating an average of 0.74 million gallons per day, serving about 6,359 residents. It discharges under NPDES permit MO0026662 (administratively continued), which expires in June 2022, with 1 recorded violation in the last three years.
Treatment technology
5 treatment structures and unit processes identified at De Soto WWTP.
Available with a free Klarifi account
See the full treatment train at De Soto WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at De Soto WWTP.
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Nearby wastewater treatment plants in Missouri
Hillsboro · 3 mi away
0.0087 MGD
Hillsboro · 3 mi away
0.03 MGD
Desoto · 5 mi away
0.03 MGD
Hillsboro · 7 mi away
0.22 MGD
Hillsboro · 7 mi away
0.09 MGD
Hillsboro · 7 mi away
0.0037 MGD
Desoto · 8 mi away
0.03 MGD
Hillsboro · 8 mi away
0.36 MGD
De Soto WWTP: 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 October 12, 2026; facility record last updated September 4, 2024.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms