How much wastewater does Ainsworth City Of STP treat?

Ainsworth City Of STP is permitted for a design flow of 0.3 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Ainsworth City Of STP use?

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

What is the NPDES permit for Ainsworth City Of STP?

The facility discharges under NPDES permit IA0069183, currently effective, expiring April 2027.

Is Ainsworth City Of STP in compliance?

Discharge monitoring reports show 13 violations at Ainsworth City Of STP in the last three years, 13 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Ainsworth City Of STP

Ainsworth, IA 52201 · Washington County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.3 MGD

NPDES permit: IA0069183; Effective

Permit expires: April 2027

Population served: 511; CWNS 2022

Ainsworth City Of STP is a publicly owned wastewater treatment works in Ainsworth, Washington County, Iowa, serving about 511 residents. It discharges under NPDES permit IA0069183 (effective), which expires in April 2027, with 13 recorded violations in the last three years.

Treatment technology

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

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 13

Effluent violations: 13

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

Key contacts

1 verified contact for Ainsworth 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 Ainsworth City Of STP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Iowa

Crawfordsville WWTP

Crawfordsville · 6 mi away

—

Washington City Of STP

Washington · 8 mi away

1.65 MGD

Columbus Junction City Of STP

Columbus Junction · 10 mi away

0.24 MGD

Olds Municipal Utilities

Olds · 11 mi away

—

Conesville City Of STP

Conesville · 12 mi away

—

Wayland, City Of STP

Wayland · 12 mi away

0.1 MGD

Riverside City Of STP

Riverside · 13 mi away

0.17 MGD

Winfield WWTP

Winfield · 13 mi away

0.24 MGD

Ainsworth 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 February 9, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms

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