Duncombe City Of STP
North Of Intersect. Of Boise And Cedar Streets, Duncombe, IA 50532 · Webster County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.41 MGD
- NPDES permit
- IA0027413
- Effective
- Permit expires
- March 2031
- Population served
- 381
- CWNS 2022
Duncombe City Of STP is a publicly owned wastewater treatment works in Duncombe, Webster County, Iowa, serving about 381 residents. It discharges under NPDES permit IA0027413 (effective), which expires in March 2031, with 2 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Duncombe City Of STP.
Available with a free Klarifi account
See the full treatment train at Duncombe City Of STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Duncombe 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 Duncombe City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Vincent · 8 mi away
—
Lehigh · 9 mi away
—
Fort Dodge · 9 mi away
11.42 MGD
Webster City · 10 mi away
1.36 MGD
Badger · 12 mi away
—
Eagle Grove · 13 mi away
1.93 MGD
Stratford · 14 mi away
0.16 MGD
Thor · 15 mi away
—
Duncombe 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 March 7, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms