Owatonna WWTP
Owatonna, MN · Steele County · Publicly Owned Treatment Works
- Average flow
- 3.16 MGD
- Design flow
- 5 MGD
- NPDES permit
- MN0051284
- Administratively continued
- Permit expires
- May 2026
- Population served
- 26,420
- CWNS 2022
Owatonna WWTP is a publicly owned wastewater treatment works in Owatonna, Steele County, Minnesota treating an average of 3.16 million gallons per day against a permitted design capacity of 5 MGD, serving about 26,420 residents. Treatment on site includes clarifiers, biogas silos, biogas balloons. It discharges under NPDES permit MN0051284 (administratively continued), which expires in May 2026, with 9 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 9
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
24 verified contacts for Owatonna WWTP, with validated emails and direct phone numbers.
Unlock 24 verified contacts (21 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Owatonna WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Minnesota
Medford · 6 mi away
0.09 MGD
Owatonna · 8 mi away
—
Claremont · 13 mi away
—
Morristown · 14 mi away
0.13 MGD
West Concord · 17 mi away
—
Kenyon · 18 mi away
0.21 MGD
Waterville · 18 mi away
—
Geneva · 18 mi away
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Owatonna 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 September 11, 2026; facility record last updated March 6, 2025.