New Sharon City Of STP
1/4 Mile West Of Hwy 63 Between 140th St And 135th, New Sharon, IA 50207 · Mahaska County · Publicly Owned Treatment Works
- Average flow
- 0.14 MGD
- Design flow
- 2.27 MGD
- NPDES permit
- IA0032417
- Effective
- Permit expires
- November 2030
- Population served
- 1,262
- CWNS 2022
New Sharon City Of STP is a publicly owned wastewater treatment works in New Sharon, Mahaska County, Iowa treating an average of 0.14 million gallons per day against a permitted design capacity of 2.27 MGD, serving about 1,262 residents. It discharges under NPDES permit IA0032417 (effective), which expires in November 2030, with 16 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at New Sharon City Of STP.
Available with a free Klarifi account
See the full treatment train at New Sharon City Of STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 16
- Effluent violations
- 13
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for New Sharon City Of STP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at New Sharon City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Searsboro · 8 mi away
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Oskaloosa · 10 mi away
0.69 MGD
Lynnville · 10 mi away
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Leighton · 11 mi away
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Barnes City · 11 mi away
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University Park · 12 mi away
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Oskaloosa · 13 mi away
—
Oskaloosa · 13 mi away
0.71 MGD
New Sharon 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 September 27, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms