What is the address of Greenwich WWTP?

The address on the plant’s EPA facility record is N Pleasant St, Greenwich, OH 44837, in Huron County. Its coordinates are 41.0377, -82.5265. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Greenwich WWTP treat?

Greenwich WWTP treats an average of 0.21 MGD and is permitted for a design flow of 0.2 MGD.

What treatment technology does Greenwich WWTP use?

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

What is the NPDES permit for Greenwich WWTP?

The facility discharges under NPDES permit OH0020486, currently effective, expiring May 2031.

Is Greenwich WWTP in compliance?

Discharge monitoring reports show 214 violations at Greenwich WWTP in the last three years, 73 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Greenwich WWTP and how do I contact them?

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

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Greenwich WWTP

N Pleasant St, Greenwich, OH 44837 · Huron County · Publicly Owned Treatment Works

Average flow: 0.21 MGD

Design flow: 0.2 MGD

NPDES permit: OH0020486; Effective

Permit expires: May 2031

Population served: 1,396; CWNS 2022

Greenwich WWTP is a publicly owned wastewater treatment works in Greenwich, Huron County, Ohio treating an average of 0.21 million gallons per day against a permitted design capacity of 0.2 MGD, serving about 1,396 residents. It discharges under NPDES permit OH0020486 (effective), which expires in May 2031, with 214 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Greenwich WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 214

Effluent violations: 73

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

Key contacts

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

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

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—

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Greenwich 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 10, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms

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