Treynor City Of STP Northwest
0.3 Mile Northwest Of City Hall, Treynor, IA 51575 · Pottawattamie County · Publicly Owned Treatment Works
- Average flow
- 0.07 MGD
- Design flow
- 0.26 MGD
- NPDES permit
- IA0039977
- Administratively continued
- Permit expires
- September 2022
- Population served
- 959
- CWNS 2022
Treynor City Of STP Northwest is a publicly owned wastewater treatment works in Treynor, Pottawattamie County, Iowa treating an average of 0.07 million gallons per day against a permitted design capacity of 0.26 MGD, serving about 959 residents. It discharges under NPDES permit IA0039977 (administratively continued), which expires in September 2022, with 47 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Treynor City Of STP Northwest.
Available with a free Klarifi account
See the full treatment train at Treynor City Of STP Northwest: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 47
- Effluent violations
- 47
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Treynor City Of STP Northwest, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Treynor City Of STP Northwest, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Mineola · 7 mi away
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Silver City · 8 mi away
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Carson · 10 mi away
0.07 MGD
Underwood · 10 mi away
0.08 MGD
Macedonia · 10 mi away
—
Henderson · 12 mi away
—
Oakland · 12 mi away
0.08 MGD
Council Bluffs · 12 mi away
8.21 MGD
Treynor City Of STP Northwest: 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 16, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms