Hopkinton WWTP
Hopkinton, IA · Delaware County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.2 MGD
- NPDES permit
- IA0023469
- Effective
- Permit expires
- December 2030
- Population served
- 726
- CWNS 2022
Hopkinton WWTP is a publicly owned wastewater treatment works in Hopkinton, Delaware County, Iowa, serving about 726 residents. Treatment on site includes clarifiers, aerated lagoons, biogas balloons. It discharges under NPDES permit IA0023469 (effective), which expires in December 2030, with 2 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 2
- 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 Hopkinton WWTP.
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Nearby wastewater treatment plants in Iowa
Delhi · 7 mi away
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Monticello · 8 mi away
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Delaware · 10 mi away
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Dyersville · 11 mi away
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Ryan · 11 mi away
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Prairieburg · 12 mi away
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Manchester · 14 mi away
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Dyersville · 14 mi away
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Hopkinton WWTP: 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 May 17, 2025.