What is the address of Minster WWTP?

The address on the plant’s EPA facility record is 155 W First St, Minster, OH 45865, in Auglaize County. Its coordinates are 40.3826, -84.3821. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Minster WWTP treat?

Minster WWTP treats an average of 1.77 MGD and is permitted for a design flow of 2.5 MGD.

What treatment technology does Minster WWTP use?

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

What is the NPDES permit for Minster WWTP?

The facility discharges under NPDES permit OH0026573, currently effective, expiring October 2027.

Is Minster WWTP in compliance?

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

Who operates Minster WWTP and how do I contact them?

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

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Minster WWTP

155 W First St, Minster, OH 45865 · Auglaize County · Publicly Owned Treatment Works

Average flow: 1.77 MGD

Design flow: 2.5 MGD

NPDES permit: OH0026573; Effective

Permit expires: October 2027

Population served: 3,046; CWNS 2022

Minster WWTP is a publicly owned wastewater treatment works in Minster, Auglaize County, Ohio treating an average of 1.77 million gallons per day against a permitted design capacity of 2.5 MGD, serving about 3,046 residents. It discharges under NPDES permit OH0026573 (effective), which expires in October 2027, with 19 recorded violations in the last three years.

Treatment technology

3 treatment structures and unit processes identified at Minster WWTP.

Available with a free Klarifi account

See the full treatment train at Minster 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: 19

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

Key contacts

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

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

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Nearby wastewater treatment plants in Ohio

Lake Loramie Special Sanitary Sd

Minster · 1 mi away

0.45 MGD

New Bremen WWTP

New Bremen · 4 mi away

0.8 MGD

Forest Lane Subdiv

Wapakoneta · 5 mi away

0.0034 MGD

Chickasaw WWTP

Chickasaw · 6 mi away

0.71 MGD

New Knoxville STP

New Knoxville · 9 mi away

0.26 MGD

Sharlon Subdiv

New Knoxville · 10 mi away

0.0016 MGD

Anna STP

Anna · 11 mi away

0.27 MGD

Montezuma Club Island WWTP

Celina · 11 mi away

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Minster 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 September 30, 2026.

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

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