How much wastewater does Earling City Of STP treat?

Earling City Of STP treats an average of 0.04 MGD and is permitted for a design flow of 0.23 MGD.

What treatment technology does Earling City Of STP use?

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

What is the NPDES permit for Earling City Of STP?

The facility discharges under NPDES permit IA0025364, currently administratively continued, expiring July 2026.

Is Earling City Of STP in compliance?

Discharge monitoring reports show 20 violations at Earling City Of STP in the last three years, 20 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Earling City Of STP

Earling, IA 51530 · Shelby County · Publicly Owned Treatment Works

Average flow: 0.04 MGD

Design flow: 0.23 MGD

NPDES permit: IA0025364; Administratively continued

Permit expires: July 2026

Population served: 492; CWNS 2022

Earling City Of STP is a publicly owned wastewater treatment works in Earling, Shelby County, Iowa treating an average of 0.04 million gallons per day against a permitted design capacity of 0.23 MGD, serving about 492 residents. It discharges under NPDES permit IA0025364 (administratively continued), which expires in July 2026, with 20 recorded violations in the last three years.

Treatment technology

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

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 20

Effluent violations: 20

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

Key contacts

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

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Dunlap WWTP

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Manilla WWTP

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Earling 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 August 10, 2026.

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

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