How much wastewater does Treynor City Of STP Northwest treat?

Treynor City Of STP Northwest is permitted for a design flow of 0.26 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Treynor City Of STP Northwest use?

Klarifi has identified uncovered lagoons at the Treynor facility.

What is the NPDES permit for Treynor City Of STP Northwest?

The facility discharges under NPDES permit IA0039977, currently administratively continued, expiring September 2022.

Is Treynor City Of STP Northwest in compliance?

Discharge monitoring reports show 47 violations at Treynor City Of STP Northwest in the last three years, 47 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Treynor City Of STP Northwest and how do I contact them?

Treynor City Of STP Northwest is a publicly owned treatment works in Treynor, Iowa. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Treynor City Of STP Northwest

Treynor, IA · Pottawattamie County · Publicly Owned Treatment Works

Average flow: —

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, serving about 959 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IA0039977 (administratively continued), which expires in September 2022, with 47 recorded violations in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Uncovered lagoons

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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.

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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 September 11, 2026; facility record last updated March 7, 2025.

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