Avoca City Of STP
Avoca, IA · Pottawattamie County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.4 MGD
- NPDES permit
- IA0030708
- Effective
- Permit expires
- November 2030
- Population served
- 1,683
- CWNS 2022
Avoca City Of STP is a publicly owned wastewater treatment works in Avoca, Pottawattamie County, Iowa, serving about 1,683 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IA0030708 (effective), which expires in November 2030, with 1 recorded violation 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
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Avoca 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 Avoca City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Hancock · 5 mi away
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Shelby · 7 mi away
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Walnut · 7 mi away
0.99 MGD
Minden · 10 mi away
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Oakland · 11 mi away
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Harlan · 12 mi away
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Persia · 14 mi away
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Portsmouth · 15 mi away
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Avoca 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 19, 2025.