Parkersburg City Of STP
608 Highway 57, Parkersburg, IA 50665 · Butler County · Publicly Owned Treatment Works
- Average flow
- 0.21 MGD
- Design flow
- 1.11 MGD
- NPDES permit
- IA0058831
- Effective
- Permit expires
- November 2029
- Population served
- 2,015
- CWNS 2022
Parkersburg City Of STP is a publicly owned wastewater treatment works in Parkersburg, Butler County, Iowa treating an average of 0.21 million gallons per day against a permitted design capacity of 1.11 MGD, serving about 2,015 residents. It discharges under NPDES permit IA0058831 (effective), which expires in November 2029, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Parkersburg City Of STP.
Available with a free Klarifi account
See the full treatment train at Parkersburg City Of STP: structures, unit processes and planned upgrades, with exact unit counts.
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 Parkersburg 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 Parkersburg City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Aplington · 5 mi away
0.13 MGD
Dike · 6 mi away
—
Allison · 11 mi away
0.31 MGD
Dike · 12 mi away
0.18 MGD
Shell Rock · 13 mi away
0.16 MGD
Holland · 13 mi away
—
Ackley · 14 mi away
0.59 MGD
Wellsburg · 14 mi away
0.08 MGD
Parkersburg 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 11, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms