Southwest City WWTF
State Line Road, South West City, MO 64863 · Mcdonald County · Publicly Owned Treatment Works
- Average flow
- 0.05 MGD
- Design flow
- —
- NPDES permit
- MO0135453
- Administratively continued
- Permit expires
- December 2025
- Population served
- 1,064
- CWNS 2022
Southwest City WWTF is a publicly owned wastewater treatment works in South West City, Mcdonald County, Missouri treating an average of 0.05 million gallons per day, serving about 1,064 residents. It discharges under NPDES permit MO0135453 (administratively continued), which expires in December 2025, with 0 recorded violations in the last three years.
Treatment technology
4 treatment structures and unit processes identified at Southwest City WWTF.
Available with a free Klarifi account
See the full treatment train at Southwest City WWTF: 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 Southwest City WWTF.
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Nearby wastewater treatment plants in Missouri
Noel · 7 mi away
0.17 MGD
Anderson · 12 mi away
0.33 MGD
Pineville · 13 mi away
0.07 MGD
Goodman · 19 mi away
0.06 MGD
Stella · 29 mi away
—
Neosho · 29 mi away
1.89 MGD
Granby · 35 mi away
0.67 MGD
Joplin · 35 mi away
5.66 MGD
Southwest City 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 4, 2024.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms