What is the address of Prairie City, City Of STP?

The address on the plant’s EPA facility record is 9380 S. 88th Ave. W., Prairie City, IA 50228, in Jasper County. Its coordinates are 41.5818, -93.2176. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Prairie City, City Of STP treat?

Prairie City, City Of STP treats an average of 0.32 MGD and is permitted for a design flow of 1.19 MGD.

What treatment technology does Prairie City, City Of STP use?

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

What is the NPDES permit for Prairie City, City Of STP?

The facility discharges under NPDES permit IA0033073, currently effective, expiring October 2029.

Is Prairie City, City Of STP in compliance?

Discharge monitoring reports show 22 violations at Prairie City, City Of STP in the last three years, 22 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Prairie City, City Of STP

9380 S. 88th Ave. W., Prairie City, IA 50228 · Jasper County · Publicly Owned Treatment Works

Average flow: 0.32 MGD

Design flow: 1.19 MGD

NPDES permit: IA0033073; Effective

Permit expires: October 2029

Population served: 1,700; CWNS 2022

Prairie City, City Of STP is a publicly owned wastewater treatment works in Prairie City, Jasper County, Iowa treating an average of 0.32 million gallons per day against a permitted design capacity of 1.19 MGD, serving about 1,700 residents. It discharges under NPDES permit IA0033073 (effective), which expires in October 2029, with 22 recorded violations in the last three years.

Treatment technology

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

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 22

Effluent violations: 22

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

1 verified contact for Prairie City, City Of STP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Prairie City, City Of STP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Iowa

Monroe City Of STP (west)

Monroe · 7 mi away

0.27 MGD

Colfax City Of STP

Colfax · 7 mi away

0.5 MGD

Runnells City Of STP

Runnells · 9 mi away

0.05 MGD

Mitchellville Water Supply

Mitchellville · 9 mi away

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Reasnor City Of STP

Reasnor · 10 mi away

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Newton City Of STP

Newton · 11 mi away

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Hartford City Of STP

Hartford · 13 mi away

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Mingo WWTP

Mingo · 13 mi away

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Prairie City, 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 March 20, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms

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