What is the address of Stewartville WWTP?

The address on the plant’s EPA facility record is 595 20th Street Northeast, Stewartville, MN 55976, in Olmsted County. Its coordinates are 43.8713, -92.4786. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Stewartville WWTP treat?

Stewartville WWTP treats an average of 0.54 MGD and is permitted for a design flow of 1.11 MGD.

What treatment technology does Stewartville WWTP use?

Klarifi has identified 3 treatment structures and unit processes at the Stewartville facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Stewartville WWTP?

The facility discharges under NPDES permit MN0020681, currently effective, expiring November 2029.

Is Stewartville WWTP in compliance?

Discharge monitoring reports show 4 violations at Stewartville WWTP in the last three years, 4 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Stewartville WWTP and how do I contact them?

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

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Stewartville WWTP

595 20th Street Northeast, Stewartville, MN 55976 · Olmsted County · Publicly Owned Treatment Works

Average flow: 0.54 MGD

Design flow: 1.11 MGD

NPDES permit: MN0020681; Effective

Permit expires: November 2029

Population served: 6,466; CWNS 2022

Stewartville WWTP is a publicly owned wastewater treatment works in Stewartville, Olmsted County, Minnesota treating an average of 0.54 million gallons per day against a permitted design capacity of 1.11 MGD, serving about 6,466 residents. It discharges under NPDES permit MN0020681 (effective), which expires in November 2029, with 4 recorded violations in the last three years.

Treatment technology

3 treatment structures and unit processes identified at Stewartville WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 4

Effluent violations: 4

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

Key contacts

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

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

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Nearby wastewater treatment plants in Minnesota

Racine

Racine · 7 mi away

0.11 MGD

Grand Meadow-Well #2 (treatment) Entry Point

Grand Meadow · 12 mi away

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Rochester Water Reclamation Plant

Rochester · 13 mi away

11.39 MGD

Spring Valley WWTP

Spring Valley · 13 mi away

0.41 MGD

Byron WWTP

Byron · 14 mi away

0.5 MGD

Chatfield WWTP

Chatfield · 15 mi away

0.19 MGD

Dexter WWTP

Dexter · 15 mi away

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Sargeant WWTP

Sargeant Township · 17 mi away

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Stewartville 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 October 10, 2026.

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

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