Grinnell, City Of STP
Grinnell, IA · Poweshiek County · Publicly Owned Treatment Works
- Average flow
- 2.12 MGD
- Design flow
- 5 MGD
- NPDES permit
- 3604186193
- Effective
- Permit expires
- November 2029
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Grinnell, 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 Grinnell, City Of STP — plus full compliance history and discharge data.
Try Klarifi freeData sourced from public EPA / NPDES records and Klarifi analysis. Last updated March 2025.