Mondamin City Of STP
Mondamin, IA · Harrison County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 1.22 MGD
- NPDES permit
- IA0023507
- Administratively continued
- Permit expires
- June 2007
- Population served
- 442
- CWNS 2022
Mondamin City Of STP is a publicly owned wastewater treatment works in Mondamin, Harrison County, Iowa, serving about 442 residents. Treatment on site includes aerated lagoons. It discharges under NPDES permit IA0023507 (administratively continued), which expires in June 2007, with 34 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 34
- Effluent violations
- 34
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Mondamin City Of STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Mondamin City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Modale · 6 mi away
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Little Sioux · 7 mi away
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Pisgah · 9 mi away
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Logan · 13 mi away
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Woodbine · 15 mi away
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Blencoe · 16 mi away
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Moorhead · 16 mi away
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Onawa · 22 mi away
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Mondamin 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 20, 2025.