How much wastewater does Chelsea City Of STP treat?

Chelsea City Of STP treats an average of 0.03 MGD and is permitted for a design flow of 0.06 MGD.

What treatment technology does Chelsea City Of STP use?

Klarifi has identified 2 treatment structures and unit processes at the Chelsea facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Chelsea City Of STP?

The facility discharges under NPDES permit IA0071552, currently effective, expiring May 2031.

Is Chelsea City Of STP in compliance?

Discharge monitoring reports show 2 violations at Chelsea City Of STP in the last three years, 2 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Chelsea City Of STP

Chelsea, IA 52215 · Tama County · Publicly Owned Treatment Works

Average flow: 0.03 MGD

Design flow: 0.06 MGD

NPDES permit: IA0071552; Effective

Permit expires: May 2031

Population served: 279; CWNS 2022

Chelsea City Of STP is a publicly owned wastewater treatment works in Chelsea, Tama County, Iowa treating an average of 0.03 million gallons per day against a permitted design capacity of 0.06 MGD, serving about 279 residents. It discharges under NPDES permit IA0071552 (effective), which expires in May 2031, with 2 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Chelsea City Of STP.

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

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Compliance snapshot (last 3 years)

Total violations: 2

Effluent violations: 2

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

Key contacts

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

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Nearby wastewater treatment plants in Iowa

Belle Plaine City Of STP

Belle Plaine · 6 mi away

0.35 MGD

Elberon City Of STP

Elberon · 6 mi away

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Tama City Of STP

Tama · 9 mi away

0.39 MGD

Clutier City Of STP

Clutier · 10 mi away

—

Toledo Wastewater Treatment Facility

Toledo · 12 mi away

0.43 MGD

Poweshiek Water Association

Brooklyn · 13 mi away

—

Brooklyn City Of STP

Brooklyn · 13 mi away

0.2 MGD

Victor City Of STP

Victor · 14 mi away

0.15 MGD

Chelsea 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 28, 2025.

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

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