Little Rock City Of STP
Little Rock, IA · Lyon County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.13 MGD
- NPDES permit
- IA0025356
- Administratively continued
- Permit expires
- December 2021
- Population served
- 439
- CWNS 2022
Little Rock City Of STP is a publicly owned wastewater treatment works in Little Rock, Lyon County, Iowa, serving about 439 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IA0025356 (administratively continued), which expires in December 2021, with 0 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
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Little Rock 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 Little Rock City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Sibley · 9 mi away
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George · 10 mi away
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Ashton · 11 mi away
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Rock Rapids · 13 mi away
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Ocheyedan · 18 mi away
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Sheldon · 18 mi away
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Melvin · 19 mi away
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Boyden · 20 mi away
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Little Rock 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.