Sanborn WWTP
201 S Western St, Sanborn, IA 51248 · Obrien County · Publicly Owned Treatment Works
- Average flow
- 0.6 MGD
- Design flow
- 1.92 MGD
- NPDES permit
- IA0032522
- Effective
- Permit expires
- May 2030
- Population served
- 1,392
- CWNS 2022
Sanborn WWTP is a publicly owned wastewater treatment works in Sanborn, Obrien County, Iowa treating an average of 0.6 million gallons per day against a permitted design capacity of 1.92 MGD, serving about 1,392 residents. It discharges under NPDES permit IA0032522 (effective), which expires in May 2030, with 116 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in April 2025.
Treatment technology
3 treatment structures and unit processes identified at Sanborn WWTP.
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See the full treatment train at Sanborn WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 116
- Effluent violations
- 96
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Sanborn WWTP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $800,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Apr 2025
Sanborn, City Of STP CWA 309A AO for Compliance
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $800,000
EPA's description of the case:
“Administrative Order on Consent issued to the City of Sanborn, Iowa to establish a compliance schedule to address violations of the sewage treatment plant's National Pollutant Discharge Elimination…”
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Source: EPA ECHO, civil enforcement case 07-2024-0108.
Full case history with a free Klarifi account
Every action against Sanborn WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
1 verified contact for Sanborn WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Sanborn WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Archer · 6 mi away
0.0054 MGD
Primghar · 7 mi away
0.29 MGD
Melvin · 9 mi away
—
Sheldon · 10 mi away
0.9 MGD
Hartley · 10 mi away
0.27 MGD
Ashton · 11 mi away
—
Sibley · 14 mi away
0.33 MGD
Paullina · 14 mi away
0.08 MGD
Sanborn WWTP: 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 16, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms