How much wastewater does Piney Orchard WWTP treat?

Piney Orchard WWTP treats an average of 0.52 MGD.

What treatment technology does Piney Orchard WWTP use?

Klarifi has identified clarifiers, carrousels / oxidation ditches at the Odenton facility.

What is the NPDES permit for Piney Orchard WWTP?

The facility discharges under NPDES permit MDL059145, currently effective, expiring December 2030.

Is Piney Orchard WWTP in compliance?

Discharge monitoring reports show 6 violations at Piney Orchard WWTP in the last three years. The full history is available in Klarifi.

Who operates Piney Orchard WWTP and how do I contact them?

Piney Orchard WWTP is a publicly owned treatment works in Odenton, Maryland. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Piney Orchard WWTP

Odenton, MD · Anne Arundel County · Publicly Owned Treatment Works

Average flow: 0.52 MGD

Design flow: —

NPDES permit: MDL059145; Effective

Permit expires: December 2030

Population served: 8,500; CWNS 2022

Piney Orchard WWTP is a publicly owned wastewater treatment works in Odenton, Anne Arundel County, Maryland treating an average of 0.52 million gallons per day, serving about 8,500 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit MDL059145 (effective), which expires in December 2030, with 6 recorded violations in the last three years.

Treatment technology

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

Clarifiers

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Carrousels / oxidation ditches

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Compliance snapshot (last 3 years)

Total violations: 6

Effluent violations: 0

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

Key contacts

Decision-makers at Piney Orchard WWTP.

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Piney Orchard 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 May 19, 2025.

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