Clarkfield WWTP
2574 Highway 59, Clarkfield, MN 56223 · Yellow Medicine County · Publicly Owned Treatment Works
- Average flow
- 0.91 MGD
- Design flow
- 0.33 MGD
- NPDES permit
- MNG585093
- Effective
- Permit expires
- November 2028
- Population served
- 1,044
- CWNS 2022
Clarkfield WWTP is a publicly owned wastewater treatment works in Clarkfield, Yellow Medicine County, Minnesota treating an average of 0.91 million gallons per day against a permitted design capacity of 0.33 MGD, serving about 1,044 residents. It discharges under NPDES permit MNG585093 (effective), which expires in November 2028, with 33 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Clarkfield WWTP.
Available with a free Klarifi account
See the full treatment train at Clarkfield WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 33
- 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 Clarkfield WWTP.
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Hanley Falls · 12 mi away
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Montevideo · 12 mi away
0.88 MGD
St. Leo · 12 mi away
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Granite Falls · 13 mi away
0.34 MGD
Cottonwood · 13 mi away
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Dawson · 16 mi away
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Wood Lake Township · 16 mi away
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Minneota · 16 mi away
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Clarkfield 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 January 30, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms