How much wastewater does Middletown WWTP treat?

Middletown WWTP treats an average of 0.04 MGD and is permitted for a design flow of 0.6 MGD.

What treatment technology does Middletown WWTP use?

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

What is the NPDES permit for Middletown WWTP?

The facility discharges under NPDES permit IA0025381, currently effective, expiring October 2026.

Is Middletown WWTP in compliance?

Discharge monitoring reports show 15 violations at Middletown WWTP in the last three years, 7 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Middletown WWTP and how do I contact them?

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

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Middletown WWTP

Middletown, IA 52638 · Des Moines County · Publicly Owned Treatment Works

Average flow: 0.04 MGD

Design flow: 0.6 MGD

NPDES permit: IA0025381; Effective

Permit expires: October 2026

Population served: 559; CWNS 2022

Middletown WWTP is a publicly owned wastewater treatment works in Middletown, Des Moines County, Iowa treating an average of 0.04 million gallons per day against a permitted design capacity of 0.6 MGD, serving about 559 residents. It discharges under NPDES permit IA0025381 (effective), which expires in October 2026, with 15 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Middletown WWTP.

Available with a free Klarifi account

See the full treatment train at Middletown WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 15

Effluent violations: 7

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

Key contacts

1 verified contact for Middletown WWTP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Middletown WWTP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Iowa

Danville City Of STP

Danville · 3 mi away

0.1 MGD

Denmark Sanitary District STP

Denmark · 7 mi away

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Burlington, City Of (wwtp)

Burlington · 9 mi away

5.79 MGD

New London WWTP

New London · 10 mi away

0.26 MGD

West Point City Of STP

West Point · 12 mi away

0.08 MGD

Mediapolis City Of STP

Mediapolis · 14 mi away

0.17 MGD

St Paul City Of STP

Saint Paul · 14 mi away

—

Fort Madison City Of STP

Fort Madison · 15 mi away

1.65 MGD

Middletown WWTP: 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 28, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms

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