What is the address of Karlstad WWTP?

The address on the plant’s EPA facility record is 104 1st St S, Karlstad, MN 56732, in Kittson County. Its coordinates are 48.5888, -96.5266. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Karlstad WWTP treat?

Karlstad WWTP treats an average of 0.07 MGD and is permitted for a design flow of 0.26 MGD.

What treatment technology does Karlstad WWTP use?

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

What is the NPDES permit for Karlstad WWTP?

The facility discharges under NPDES permit MNG585146, currently effective, expiring November 2028.

Is Karlstad WWTP in compliance?

Discharge monitoring reports show 29 violations at Karlstad WWTP in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Karlstad WWTP and how do I contact them?

Karlstad WWTP is a publicly owned treatment works in Karlstad, Minnesota. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Karlstad WWTP

104 1st St S, Karlstad, MN 56732 · Kittson County · Publicly Owned Treatment Works

Average flow: 0.07 MGD

Design flow: 0.26 MGD

NPDES permit: MNG585146; Effective

Permit expires: November 2028

Population served: 710; CWNS 2022

Karlstad WWTP is a publicly owned wastewater treatment works in Karlstad, Kittson County, Minnesota treating an average of 0.07 million gallons per day against a permitted design capacity of 0.26 MGD, serving about 710 residents. It discharges under NPDES permit MNG585146 (effective), which expires in November 2028, with 29 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Karlstad WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 29

Effluent violations: 1

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

Key contacts

Decision-makers at Karlstad WWTP.

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Karlstad 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 · Sludge dewatering · Biological nutrient removal · all terms

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