What is the address of Walnut Grove WWTP?

The address on the plant’s EPA facility record is East Highway 14, Walnut Grove, MN 56180, in Redwood County. Its coordinates are 44.2247, -95.4585. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Walnut Grove WWTP treat?

Walnut Grove WWTP is permitted for a design flow of 0.2 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Walnut Grove WWTP use?

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

What is the NPDES permit for Walnut Grove WWTP?

The facility discharges under NPDES permit MN0021776, currently administratively continued, expiring March 2016.

Who operates Walnut Grove WWTP and how do I contact them?

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

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Walnut Grove WWTP

East Highway 14, Walnut Grove, MN 56180 · Redwood County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.2 MGD

NPDES permit: MN0021776; Administratively continued

Permit expires: March 2016

Population served: —; CWNS 2022

Walnut Grove WWTP is a publicly owned wastewater treatment works in Walnut Grove, Redwood County, Minnesota. It discharges under NPDES permit MN0021776 (administratively continued), which expires in March 2016.

Treatment technology

3 treatment structures and unit processes identified at Walnut Grove WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: —

Effluent violations: —

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

Key contacts

Decision-makers at Walnut Grove WWTP.

No verified contacts on file yet

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Nearby wastewater treatment plants in Minnesota

Revere WWTP

Revere · 5 mi away

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Tracy

Tracy · 7 mi away

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Lamberton WWTP

Lamberton Township · 10 mi away

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Lucan WWTP

Lucan · 13 mi away

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Westbrook WWTP

Westbrook Township · 14 mi away

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Shetek Area Water & Sewer District WWTP

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Milroy

Milroy · 14 mi away

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Currie City Of

Currie · 14 mi away

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Walnut Grove 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 July 19, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms

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