What is the address of Union City WWTP?

The address on the plant’s EPA facility record is 502 Beamsville Union City Rd, Union City, OH 45390, in Darke County. Its coordinates are 40.1969, -84.7785. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Union City WWTP treat?

Union City WWTP treats an average of 0.63 MGD.

What treatment technology does Union City WWTP use?

Klarifi has identified 2 treatment structures and unit processes at the Union City facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Union City WWTP?

The facility discharges under NPDES permit OH0022454, currently expired, expiring March 2026.

Is Union City WWTP in compliance?

Discharge monitoring reports show 28 violations at Union City WWTP in the last three years, 28 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Union City WWTP and how do I contact them?

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

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Union City WWTP

502 Beamsville Union City Rd, Union City, OH 45390 · Darke County · Publicly Owned Treatment Works

Average flow: 0.63 MGD

Design flow: —

NPDES permit: OH0022454; Expired

Permit expires: March 2026

Population served: 4,410; CWNS 2022

Union City WWTP is a publicly owned wastewater treatment works in Union City, Darke County, Ohio treating an average of 0.63 million gallons per day, serving about 4,410 residents. It discharges under NPDES permit OH0022454 (expired), which expires in March 2026, with 28 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Union City WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 28

Effluent violations: 28

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

Key contacts

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

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

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Nearby wastewater treatment plants in Ohio

Ansonia WWTP

Ansonia · 8 mi away

—

Rolin Acres Subdiv WWTP

Greenville · 9 mi away

0.01 MGD

Greenville WWTP

Greenville · 11 mi away

1.91 MGD

Versailles Village Of

Versailles · 15 mi away

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Fort Recovery WWTP

Ft Recovery · 15 mi away

0.14 MGD

New Madison STP

New Madison · 16 mi away

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Saint Henry WWTP

St Henry · 18 mi away

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Philothea Sd WWTP

Celina · 19 mi away

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Union City 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 August 14, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms

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