Butterfield WWTP
1061 N. Ash Street, Cassville, MO 65623 · Barry County · Publicly Owned Treatment Works
- Average flow
- 0.03 MGD
- Design flow
- —
- NPDES permit
- MO0126292
- Effective
- Permit expires
- February 2029
- Population served
- 604
- CWNS 2022
Butterfield WWTP is a publicly owned wastewater treatment works in Cassville, Barry County, Missouri treating an average of 0.03 million gallons per day, serving about 604 residents. It discharges under NPDES permit MO0126292 (effective), which expires in February 2029, with 52 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at Butterfield WWTP.
Available with a free Klarifi account
See the full treatment train at Butterfield WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 52
- Effluent violations
- 50
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Butterfield WWTP.
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Nearby wastewater treatment plants in Missouri
Cassville · 5 mi away
0.37 MGD
Exeter · 6 mi away
0.06 MGD
Monett · 12 mi away
2.77 MGD
Pierce City · 14 mi away
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Seligman · 16 mi away
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Stella · 16 mi away
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Verona · 16 mi away
0.14 MGD
Aurora · 18 mi away
1.25 MGD
Butterfield 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 4, 2024.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms