Sloan City Of STP
Sloan, IA 51055 · Woodbury County · Publicly Owned Treatment Works
- Average flow
- 0.08 MGD
- Design flow
- 0.73 MGD
- NPDES permit
- IA0032361
- Effective
- Permit expires
- August 2029
- Population served
- 1,042
- CWNS 2022
Sloan City Of STP is a publicly owned wastewater treatment works in Sloan, Woodbury County, Iowa treating an average of 0.08 million gallons per day against a permitted design capacity of 0.73 MGD, serving about 1,042 residents. It discharges under NPDES permit IA0032361 (effective), which expires in August 2029, with 44 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Sloan City Of STP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 44
- Effluent violations
- 44
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Sloan 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 Sloan City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Salix · 6 mi away
—
Hornick · 6 mi away
—
Whiting · 9 mi away
0.05 MGD
Smithland · 15 mi away
—
Sioux City · 16 mi away
14.01 MGD
Lawton · 17 mi away
—
Oto · 17 mi away
—
Onawa · 17 mi away
0.22 MGD
Sloan 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 October 31, 2024.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms