Nora Springs City Of STP
Nora Springs, IA 50458 · Floyd County · Publicly Owned Treatment Works
- Average flow
- 0.13 MGD
- Design flow
- 1.52 MGD
- NPDES permit
- IA0032778
- Effective
- Permit expires
- January 2031
- Population served
- 1,369
- CWNS 2022
Nora Springs City Of STP is a publicly owned wastewater treatment works in Nora Springs, Floyd County, Iowa treating an average of 0.13 million gallons per day against a permitted design capacity of 1.52 MGD, serving about 1,369 residents. It discharges under NPDES permit IA0032778 (effective), which expires in January 2031, with 2 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Nora Springs City Of STP.
Treatment structure data not yet analyzed for this facility.
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
Decision-makers at Nora Springs City Of STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Iowa
Rudd · 4 mi away
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Rock Falls · 6 mi away
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Rockford · 7 mi away
0.29 MGD
Mason City · 8 mi away
5.13 MGD
Plymouth · 9 mi away
0.12 MGD
Orchard · 13 mi away
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Osage · 13 mi away
0.03 MGD
Osage · 13 mi away
0.41 MGD
Nora Springs 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 September 28, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms