What is the address of Ansonia WWTP?

The address on the plant’s EPA facility record is 629 N Main St, Ansonia, OH 45303, in Darke County. Its coordinates are 40.2191, -84.6369. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Ansonia WWTP treat?

Ansonia WWTP is permitted for a design flow of 0.35 MGD. Its average daily flow is not available in the current EPA data.

What is the NPDES permit for Ansonia WWTP?

The facility discharges under NPDES permit OH0023884, currently effective, expiring December 2028.

Is Ansonia WWTP in compliance?

Discharge monitoring reports show 7 violations at Ansonia WWTP in the last three years, 7 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Ansonia WWTP and how do I contact them?

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

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Ansonia WWTP

629 N Main St, Ansonia, OH 45303 · Darke County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.35 MGD

NPDES permit: OH0023884; Effective

Permit expires: December 2028

Population served: 1,329; CWNS 2022

Ansonia WWTP is a publicly owned wastewater treatment works in Ansonia, Darke County, Ohio, serving about 1,329 residents. It discharges under NPDES permit OH0023884 (effective), which expires in December 2028, with 7 recorded violations in the last three years.

Treatment technology

Treatment structures and unit processes at Ansonia WWTP.

Treatment structure data not yet analyzed for this facility.

Compliance snapshot (last 3 years)

Total violations: 7

Effluent violations: 7

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

Key contacts

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

Unlock 1 verified contact

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

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Ansonia 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 4, 2024.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms

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