How much wastewater does New Harmony WWTP treat?

New Harmony WWTP treats an average of 0.12 MGD and is permitted for a design flow of 0.13 MGD.

What is the NPDES permit for New Harmony WWTP?

The facility discharges under NPDES permit MS0058645, currently effective, expiring March 2030.

Is New Harmony WWTP in compliance?

Discharge monitoring reports show 75 violations at New Harmony WWTP in the last three years, 75 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates New Harmony WWTP and how do I contact them?

New Harmony WWTP is a publicly owned treatment works in Philadelphia, Mississippi. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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New Harmony WWTP

Philadelphia, MS · Neshoba County · Publicly Owned Treatment Works

Average flow: 0.12 MGD

Design flow: 0.13 MGD

NPDES permit: MS0058645; Effective

Permit expires: March 2030

Population served: —; CWNS 2022

New Harmony WWTP is a publicly owned wastewater treatment works in Philadelphia, Neshoba County, Mississippi treating an average of 0.12 million gallons per day against a permitted design capacity of 0.13 MGD. It discharges under NPDES permit MS0058645 (effective), which expires in March 2030, with 75 recorded violations in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Treatment structure data not yet analyzed for this facility.

Compliance snapshot (last 3 years)

Total violations: 75

Effluent violations: 75

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

Key contacts

Decision-makers at New Harmony WWTP.

No verified contacts on file yet

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Nearby wastewater treatment plants in Mississippi

Pearl River Wastewater Treatment Plant

Philadelphia · 4 mi away

0.67 MGD

Neshoba County

Philadelphia · 9 mi away

0.09 MGD

Conehatta School WWTF

Conehatta · 15 mi away

0.03 MGD

Standing Pine WWTF

Conehatta · 22 mi away

0.03 MGD

Morton POTW

Morton · 35 mi away

1.17 MGD

Weir POTW

Weir · 35 mi away

—

Ackerman POTW

Ackerman · 38 mi away

—

Durant POTW

Durant · 39 mi away

—

New Harmony 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 September 11, 2026; facility record last updated September 25, 2025.

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