Clemons City Of STP
Clemons, IA · Marshall County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.04 MGD
- NPDES permit
- IA0057509
- Effective
- Permit expires
- March 2031
- Population served
- 140
- CWNS 2022
Clemons City Of STP is a publicly owned wastewater treatment works in Clemons, Marshall County, Iowa, serving about 140 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IA0057509 (effective), which expires in March 2031, with 30 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 30
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Clemons City Of STP.
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Nearby wastewater treatment plants in Iowa
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State Center · 8 mi away
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Liscomb · 9 mi away
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Albion · 9 mi away
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Union · 10 mi away
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Colo · 11 mi away
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Whitten · 12 mi away
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Clemons City Of STP: 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 28, 2025.