What is the address of Twin Valley?

The address on the plant’s EPA facility record is County Road 27, Twin Valley, MN 56584, in Norman County. Its coordinates are 47.2690, -96.2830. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Twin Valley treat?

Twin Valley is permitted for a design flow of 0.15 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Twin Valley use?

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

What is the NPDES permit for Twin Valley?

The facility discharges under NPDES permit MNG585137, currently effective, expiring November 2028.

Is Twin Valley in compliance?

Discharge monitoring reports show 2 violations at Twin Valley in the last three years. The full history is available in Klarifi.

Who operates Twin Valley and how do I contact them?

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

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Twin Valley

County Road 27, Twin Valley, MN 56584 · Norman County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.15 MGD

NPDES permit: MNG585137; Effective

Permit expires: November 2028

Population served: 860; CWNS 2022

Twin Valley is a publicly owned wastewater treatment plant in Twin Valley, Norman County, Minnesota, serving about 860 residents. It discharges under NPDES permit MNG585137 (effective), which expires in November 2028, with 2 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Twin Valley.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 2

Effluent violations: 0

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

Key contacts

Decision-makers at Twin Valley.

No verified contacts on file yet

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Nearby wastewater treatment plants in Minnesota

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Ulen WWTP

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Mahnomen WWTP

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Felton WWTP

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Waubun

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Fertile WWTP

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Twin Valley: 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 · WWTP · Biosolids · all terms

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