Gilbert, City Of STP
119 Main Street, Gilbert, IA 50105 · Story County · Publicly Owned Treatment Works
- Average flow
- 0.31 MGD
- Design flow
- 1.16 MGD
- NPDES permit
- IA0025968
- Effective
- Permit expires
- October 2030
- Population served
- 1,211
- CWNS 2022
Gilbert, City Of STP is a publicly owned wastewater treatment works in Gilbert, Story County, Iowa treating an average of 0.31 million gallons per day against a permitted design capacity of 1.16 MGD, serving about 1,211 residents. It discharges under NPDES permit IA0025968 (effective), which expires in October 2030, with 11 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Gilbert, City Of STP.
Available with a free Klarifi account
See the full treatment train at Gilbert, City Of STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 11
- Effluent violations
- 10
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Gilbert, 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 Gilbert, City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Story City · 7 mi away
0.93 MGD
Roland · 9 mi away
0.51 MGD
Boone · 13 mi away
3.05 MGD
Mccallsburg · 14 mi away
—
Jewell · 14 mi away
0.11 MGD
Nevada · 14 mi away
1.37 MGD
Huxley · 14 mi away
0.61 MGD
Ellsworth · 15 mi away
0.14 MGD
Gilbert, 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 February 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms