Ely City Of STP
Ely, IA 52227 · Linn County · Publicly Owned Treatment Works
- Average flow
- 0.17 MGD
- Design flow
- 0.9 MGD
- NPDES permit
- IA0047988
- Effective
- Permit expires
- February 2028
- Population served
- 1,860
- CWNS 2022
Ely City Of STP is a publicly owned wastewater treatment works in Ely, Linn County, Iowa treating an average of 0.17 million gallons per day against a permitted design capacity of 0.9 MGD, serving about 1,860 residents. It discharges under NPDES permit IA0047988 (effective), which expires in February 2028, with 7 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Ely City Of STP.
Available with a free Klarifi account
See the full treatment train at Ely City Of STP: 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
Decision-makers at Ely City Of STP.
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Nearby wastewater treatment plants in Iowa
Swisher · 6 mi away
0.12 MGD
Solon · 6 mi away
0.49 MGD
Cedar Rapids · 6 mi away
39.59 MGD
Mount Vernon · 10 mi away
0.22 MGD
North Liberty · 10 mi away
2.03 MGD
Fairfax · 10 mi away
0.28 MGD
Lisbon · 10 mi away
0.14 MGD
Tiffin · 12 mi away
0.52 MGD
Ely 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 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms