What is the address of Prospect WWTP?

The address on the plant’s EPA facility record is State Route 203 South, Prospect, OH 43342, in Marion County. Its coordinates are 40.4413, -83.1877. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Prospect WWTP treat?

Prospect WWTP treats an average of 0.1 MGD and is permitted for a design flow of 0.24 MGD.

What is the NPDES permit for Prospect WWTP?

The facility discharges under NPDES permit OH0047902, currently effective, expiring April 2031.

Is Prospect WWTP in compliance?

Discharge monitoring reports show 11 violations at Prospect WWTP in the last three years, 10 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Prospect WWTP and how do I contact them?

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

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Prospect WWTP

State Route 203 South, Prospect, OH 43342 · Marion County · Publicly Owned Treatment Works

Average flow: 0.1 MGD

Design flow: 0.24 MGD

NPDES permit: OH0047902; Effective

Permit expires: April 2031

Population served: 1,067; CWNS 2022

Prospect WWTP is a publicly owned wastewater treatment works in Prospect, Marion County, Ohio treating an average of 0.1 million gallons per day against a permitted design capacity of 0.24 MGD, serving about 1,067 residents. It discharges under NPDES permit OH0047902 (effective), which expires in April 2031, with 11 recorded violations in the last three years.

Treatment technology

Treatment structures and unit processes at Prospect WWTP.

Treatment structure data not yet analyzed for this facility.

Compliance snapshot (last 3 years)

Total violations: 11

Effluent violations: 10

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

Key contacts

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

Unlock 1 verified contact

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

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North Quarry Subdivision

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Harmony Subdiv Sd 5b

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Fountain Place WWTP Sd 5a

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Sd No 7 Water Reclamation Plant

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Marion WPC

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Prospect 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 November 29, 2025.

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

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