Jewell City Of STP
701 Main Street, Jewell, IA 50130 · Hamilton County · Publicly Owned Treatment Works
- Average flow
- 0.11 MGD
- Design flow
- 0.36 MGD
- NPDES permit
- IA0024422
- Effective
- Permit expires
- July 2028
- Population served
- 1,216
- CWNS 2022
Jewell City Of STP is a publicly owned wastewater treatment works in Jewell, Hamilton County, Iowa treating an average of 0.11 million gallons per day against a permitted design capacity of 0.36 MGD, serving about 1,216 residents. It discharges under NPDES permit IA0024422 (effective), which expires in July 2028, with 7 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Jewell City Of STP.
Available with a free Klarifi account
See the full treatment train at Jewell City Of STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 5
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Jewell City Of STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Jewell City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Ellsworth · 2 mi away
0.14 MGD
Kamrar · 8 mi away
—
Story City · 9 mi away
0.93 MGD
Stanhope · 9 mi away
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Radcliffe · 12 mi away
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Blairsburg · 12 mi away
—
Roland · 12 mi away
0.51 MGD
Williams · 14 mi away
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Jewell 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 October 26, 2026; facility record last updated March 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms