What is the address of Osakis WWTP?

The address on the plant’s EPA facility record is 14 Nokomis St W, Osakis, MN 56360, in Douglas County. Its coordinates are 45.8527, -95.1692. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Osakis WWTP treat?

Osakis WWTP is permitted for a design flow of 0.29 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Osakis WWTP use?

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

What is the NPDES permit for Osakis WWTP?

The facility discharges under NPDES permit MN0020028, currently effective, expiring November 2028.

Is Osakis WWTP in compliance?

Discharge monitoring reports show 8 violations at Osakis WWTP in the last three years, 5 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Osakis WWTP and how do I contact them?

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

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Osakis WWTP

14 Nokomis St W, Osakis, MN 56360 · Douglas County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.29 MGD

NPDES permit: MN0020028; Effective

Permit expires: November 2028

Population served: 1,771; CWNS 2022

Osakis WWTP is a publicly owned wastewater treatment works in Osakis, Douglas County, Minnesota, serving about 1,771 residents. It discharges under NPDES permit MN0020028 (effective), which expires in November 2028, with 8 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Osakis WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 8

Effluent violations: 5

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

Key contacts

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

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

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2.75 MGD

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Long Prairie WWTP

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Lowry WWTP

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Osakis 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 February 17, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms

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