What is the address of Williams WWTP?

The address on the plant’s EPA facility record is 150 Spina St, Williams, MN 56686, in Lake Of The Woods County. Its coordinates are 48.7676, -94.9440. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Williams WWTP treat?

Williams WWTP is permitted for a design flow of 0.06 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Williams WWTP use?

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

What is the NPDES permit for Williams WWTP?

The facility discharges under NPDES permit MNG585388, currently effective, expiring November 2028.

Is Williams WWTP in compliance?

Discharge monitoring reports show no violations at Williams WWTP in the last three years.

Who operates Williams WWTP and how do I contact them?

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

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Williams WWTP

150 Spina St, Williams, MN 56686 · Lake Of The Woods County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.06 MGD

NPDES permit: MNG585388; Effective

Permit expires: November 2028

Population served: —; CWNS 2022

Williams WWTP is a publicly owned wastewater treatment works in Williams, Lake Of The Woods County, Minnesota. It discharges under NPDES permit MNG585388 (effective), which expires in November 2028, with 0 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Williams WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 0

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 Williams WWTP.

No verified contacts on file yet

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Nearby wastewater treatment plants in Minnesota

Baudette WWTP

Baudette · 16 mi away

—

Roseau WWTP

Roseau · 38 mi away

0.5 MGD

Badger Wastewater Treatment Plant

Badger · 48 mi away

—

Isd 363 - Indus Public School

Birchdale · 49 mi away

0.02 MGD

Greenbush WWTP

Greenbush · 56 mi away

—

Goodridge WWTP

Goodridge · 58 mi away

—

Kelliher WWTP

Kelliher · 61 mi away

—

Middle River WWTP

Middle River · 61 mi away

—

Williams 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 · Biological nutrient removal · Tertiary treatment · all terms

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