Hospers City Of STP
Hospers, IA 51238 · Sioux County · Publicly Owned Treatment Works
- Average flow
- 0.24 MGD
- Design flow
- 0.93 MGD
- NPDES permit
- IA0036897
- Effective
- Permit expires
- January 2029
- Population served
- 702
- CWNS 2022
Hospers City Of STP is a publicly owned wastewater treatment works in Hospers, Sioux County, Iowa treating an average of 0.24 million gallons per day against a permitted design capacity of 0.93 MGD, serving about 702 residents. It discharges under NPDES permit IA0036897 (effective), which expires in January 2029, with 21 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Hospers City Of STP.
Available with a free Klarifi account
See the full treatment train at Hospers City Of STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 21
- Effluent violations
- 21
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Industrial users and pretreatment
Industries that discharge process wastewater to Hospers City Of STP, from the plant's pretreatment programme records.
- Industrial users
- 1
- on record
On record: Den Hartog Industries Inc (Hospers). Most users are in chemicals, plastics and petroleum.
Unlock the details behind these industrial users
Discharge flow, federal category, source documents and contacts for every industrial user of Hospers City Of STP. Free with a Klarifi account.
Key contacts
Decision-makers at Hospers City Of STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Iowa
Granville · 5 mi away
—
Sheldon · 9 mi away
0.9 MGD
Archer · 9 mi away
0.0054 MGD
Orange City · 10 mi away
0.85 MGD
Boyden · 10 mi away
0.15 MGD
Paullina · 13 mi away
0.08 MGD
Sioux Center · 14 mi away
0.97 MGD
Sanborn · 14 mi away
0.6 MGD
Hospers 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 August 3, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms