What is the address of Greenville WWTP?

The address on the plant’s EPA facility record is 209 North Ohio Street Number 100, Greenville, OH 45331, in Darke County. Its coordinates are 40.0999, -84.6132. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Greenville WWTP treat?

Greenville WWTP treats an average of 1.91 MGD and is permitted for a design flow of 3.5 MGD.

What treatment technology does Greenville WWTP use?

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

What is the NPDES permit for Greenville WWTP?

The facility discharges under NPDES permit OH0025429, currently effective, expiring September 2028.

Is Greenville WWTP in compliance?

Discharge monitoring reports show 9 violations at Greenville WWTP in the last three years, 9 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Greenville WWTP and how do I contact them?

Greenville WWTP is a publicly owned treatment works in Greenville, Ohio. Klarifi lists 3 verified decision-maker contacts for this facility, available with a free trial.

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Greenville WWTP

209 North Ohio Street Number 100, Greenville, OH 45331 · Darke County · Publicly Owned Treatment Works

Average flow: 1.91 MGD

Design flow: 3.5 MGD

NPDES permit: OH0025429; Effective

Permit expires: September 2028

Population served: 13,518; CWNS 2022

Greenville WWTP is a publicly owned wastewater treatment works in Greenville, Darke County, Ohio treating an average of 1.91 million gallons per day against a permitted design capacity of 3.5 MGD, serving about 13,518 residents. It discharges under NPDES permit OH0025429 (effective), which expires in September 2028, with 9 recorded violations in the last three years.

Treatment technology

3 treatment structures and unit processes identified at Greenville WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 9

Effluent violations: 9

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

Key contacts

3 verified contacts for Greenville WWTP, with validated emails and direct phone numbers.

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

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Greenville 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 April 24, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms

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