What is the address of Thayer City Of STP?

The address on the plant’s EPA facility record is 1391 190th Street, Thayer, IA 50254, in Union County. Its coordinates are 41.0264, -94.0721. For some plants the record holds the utility’s mailing address rather than the plant gate.

What treatment technology does Thayer City Of STP use?

Klarifi has identified one treatment structure or unit process at the Thayer facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Thayer City Of STP?

The facility discharges under NPDES permit IA0079936, currently effective, expiring March 2027.

Is Thayer City Of STP in compliance?

Discharge monitoring reports show no violations at Thayer City Of STP in the last three years.

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

Thayer City Of STP is a publicly owned treatment works in Thayer, Iowa. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Thayer City Of STP

1391 190th Street, Thayer, IA 50254 · Union County · Publicly Owned Treatment Works

Average flow: —

Design flow: —

NPDES permit: IA0079936; Effective

Permit expires: March 2027

Population served: 51; CWNS 2022

Thayer City Of STP is a publicly owned wastewater treatment works in Thayer, Union County, Iowa, serving about 51 residents. It discharges under NPDES permit IA0079936 (effective), which expires in March 2027, with 0 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Thayer City Of STP.

Available with a free Klarifi account

See the full treatment train at Thayer City Of STP: structures, unit processes and planned upgrades, with exact unit counts.

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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

Decision-makers at Thayer City Of STP.

No verified contacts on file yet

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Nearby wastewater treatment plants in Iowa

Lorimor City Of STP

Lorimor · 7 mi away

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Afton City Of STP

Afton · 7 mi away

0.1 MGD

Murray City Of STP

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Arispe City Of STP

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Sun Valley Sanitary District Lagoon

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Macksburg, City Of STP

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Grand River WWTP

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East Peru City Of STP (warren Water District)

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Thayer 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 April 23, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms

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