Monroe City WWTP
405 S. Oak Street, Monroe City, MO 63456 · Marion County · Publicly Owned Treatment Works
- Average flow
- 0.44 MGD
- Design flow
- —
- NPDES permit
- MO0055379
- Administratively continued
- Permit expires
- March 2024
- Population served
- 2,810
- CWNS 2022
Monroe City WWTP is a publicly owned wastewater treatment works in Monroe City, Marion County, Missouri treating an average of 0.44 million gallons per day, serving about 2,810 residents. It discharges under NPDES permit MO0055379 (administratively continued), which expires in March 2024, with 0 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified, 1 planned upgrade on record at Monroe City WWTP.
Available with a free Klarifi account
See the full treatment train at Monroe City WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Monroe City WWTP.
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Nearby wastewater treatment plants in Missouri
Hunnewell · 6 mi away
0.02 MGD
Hannibal · 11 mi away
0.01 MGD
Philadelphia · 14 mi away
0.0053 MGD
Perry · 15 mi away
0.13 MGD
Center · 15 mi away
0.06 MGD
Shelbina · 16 mi away
0.33 MGD
Palmyra · 17 mi away
0.34 MGD
New London · 19 mi away
0.07 MGD
Monroe City 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 26, 2026; facility record last updated September 6, 2024.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms