What is the address of Hinckley WWTP?

The address on the plant’s EPA facility record is County Road 140, Hinckley, MN 55037, in Pine County. Its coordinates are 46.0228, -92.9102. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Hinckley WWTP treat?

Hinckley WWTP treats an average of 0.23 MGD and is permitted for a design flow of 0.68 MGD.

What treatment technology does Hinckley WWTP use?

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

What is the NPDES permit for Hinckley WWTP?

The facility discharges under NPDES permit MN0023701, currently effective, expiring January 2029.

Is Hinckley WWTP in compliance?

Discharge monitoring reports show 19 violations at Hinckley WWTP in the last three years, 17 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Hinckley WWTP and how do I contact them?

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

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Hinckley WWTP

County Road 140, Hinckley, MN 55037 · Pine County · Publicly Owned Treatment Works

Average flow: 0.23 MGD

Design flow: 0.68 MGD

NPDES permit: MN0023701; Effective

Permit expires: January 2029

Population served: 1,904; CWNS 2022

Hinckley WWTP is a publicly owned wastewater treatment works in Hinckley, Pine County, Minnesota treating an average of 0.23 million gallons per day against a permitted design capacity of 0.68 MGD, serving about 1,904 residents. It discharges under NPDES permit MN0023701 (effective), which expires in January 2029, with 19 recorded violations in the last three years.

Treatment technology

3 treatment structures and unit processes identified at Hinckley WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 19

Effluent violations: 17

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

Key contacts

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

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

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Nearby wastewater treatment plants in Minnesota

Sandstone

Sandstone · 7 mi away

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Finlayson WWTP

Finlayson · 12 mi away

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Pine City

Pine City · 12 mi away

0.61 MGD

Askov WWTP

Askov · 14 mi away

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Willow River WWTP

Willow River · 20 mi away

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Mora WWTP

Mora · 22 mi away

0.27 MGD

Braham WWTP

Braham · 24 mi away

0.14 MGD

Isle WWTP

Isle · 27 mi away

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Hinckley 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 · Significant industrial user · WWTP · all terms

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