What is the address of Chokio WWTP?

The address on the plant’s EPA facility record is State Highway 28 W, Chokio, MN 56221, in Stevens County. Its coordinates are 45.5792, -96.1577. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Chokio WWTP treat?

Chokio WWTP is permitted for a design flow of 0.1 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Chokio WWTP use?

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

What is the NPDES permit for Chokio WWTP?

The facility discharges under NPDES permit MNG585007, currently effective, expiring November 2028.

Is Chokio WWTP in compliance?

Discharge monitoring reports show 20 violations at Chokio WWTP in the last three years, 6 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Chokio WWTP and how do I contact them?

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

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Chokio WWTP

State Highway 28 W, Chokio, MN 56221 · Stevens County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.1 MGD

NPDES permit: MNG585007; Effective

Permit expires: November 2028

Population served: 405; CWNS 2022

Chokio WWTP is a publicly owned wastewater treatment works in Chokio, Stevens County, Minnesota, serving about 405 residents. It discharges under NPDES permit MNG585007 (effective), which expires in November 2028, with 20 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Chokio WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 20

Effluent violations: 6

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

Key contacts

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

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

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Chokio 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 November 6, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms

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