Marthasville WWTF
Highway D, Marthasville, MO 63357 · Warren County · Publicly Owned Treatment Works
- Average flow
- 0.09 MGD
- Design flow
- —
- NPDES permit
- MO0044113
- Effective
- Permit expires
- August 2028
- Population served
- 2,410
- CWNS 2022
Marthasville WWTF is a publicly owned wastewater treatment works in Marthasville, Warren County, Missouri treating an average of 0.09 million gallons per day, serving about 2,410 residents. It discharges under NPDES permit MO0044113 (effective), which expires in August 2028, with 87 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at Marthasville WWTF.
Available with a free Klarifi account
See the full treatment train at Marthasville WWTF: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 87
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Marthasville WWTF.
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Marthasville 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 October 26, 2026; facility record last updated September 15, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms