Pierre, City Of
Pierre, SD · Hughes County · Publicly Owned Treatment Works
- Average flow
- 1.61 MGD
- Design flow
- 2.21 MGD
- NPDES permit
- SD0020176
- Effective
- Permit expires
- June 2027
- Population served
- —
- CWNS 2022
Pierre, City Of is a publicly owned wastewater treatment plant in Pierre, Hughes County, South Dakota treating an average of 1.61 million gallons per day against a permitted design capacity of 2.21 MGD. It discharges under NPDES permit SD0020176 (effective), which expires in June 2027, with 3 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 3
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Pierre, City Of.
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Nearby wastewater treatment plants in South Dakota
Fort Pierre · 3 mi away
0.22 MGD
Blunt · 21 mi away
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Murdo · 38 mi away
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Kennebec · 39 mi away
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Lower Brule · 42 mi away
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Lower Brule · 42 mi away
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Stephan · 44 mi away
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Fort Thompson · 47 mi away
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Pierre, City Of: 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 17, 2025.