What is the address of Steen WWTP?

The address on the plant’s EPA facility record is 152 110th Ave, Steen, MN 56173, in Rock County. Its coordinates are 43.5086, -96.2714. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Steen WWTP treat?

Steen WWTP is permitted for a design flow of 0.01 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Steen WWTP use?

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

What is the NPDES permit for Steen WWTP?

The facility discharges under NPDES permit MNG585199, currently effective, expiring November 2028.

Is Steen WWTP in compliance?

Discharge monitoring reports show 5 violations at Steen WWTP in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Steen WWTP and how do I contact them?

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

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Steen WWTP

152 110th Ave, Steen, MN 56173 · Rock County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.01 MGD

NPDES permit: MNG585199; Effective

Permit expires: November 2028

Population served: 195; CWNS 2022

Steen WWTP is a publicly owned wastewater treatment works in Steen, Rock County, Minnesota, serving about 195 residents. It discharges under NPDES permit MNG585199 (effective), which expires in November 2028, with 5 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Steen WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 5

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 Steen WWTP.

No verified contacts on file yet

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Nearby wastewater treatment plants in Minnesota

Hills WWTP

Hills · 4 mi away

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Beaver Creek WWTP

Beaver Creek Township · 8 mi away

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Luverne WWTP

Luverne · 10 mi away

0.83 MGD

Ellsworth WWTP

Ellsworth · 12 mi away

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Magnolia WWTP

Magnolia · 14 mi away

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Hardwick WWTP

Hardwick · 19 mi away

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Adrian WWTP

Adrian · 19 mi away

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Lismore WWTP

Lismore Township · 23 mi away

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Steen 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 7, 2025.

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

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