Monroe City Of STP (west)
Monroe, IA 50170 · Jasper County · Publicly Owned Treatment Works
- Average flow
- 0.27 MGD
- Design flow
- 1.99 MGD
- NPDES permit
- IA0041947
- Effective
- Permit expires
- September 2030
- Population served
- 1,967
- CWNS 2022
Monroe City Of STP (west) is a publicly owned wastewater treatment works in Monroe, Jasper County, Iowa treating an average of 0.27 million gallons per day against a permitted design capacity of 1.99 MGD, serving about 1,967 residents. It discharges under NPDES permit IA0041947 (effective), which expires in September 2030, with 7 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Monroe City Of STP (west).
Available with a free Klarifi account
See the full treatment train at Monroe City Of STP (west): structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Monroe City Of STP (west), with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Monroe City Of STP (west), plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Reasnor · 6 mi away
—
Prairie City · 7 mi away
0.32 MGD
Newton · 12 mi away
2.43 MGD
Runnells · 13 mi away
0.05 MGD
Pleasantville · 13 mi away
0.26 MGD
Colfax · 13 mi away
0.5 MGD
Knoxville · 14 mi away
1.39 MGD
Pella · 14 mi away
2.36 MGD
Monroe City Of STP (west): 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 · FOG · Equalization tank · all terms