Piney Orchard WWTP
8791 Piney Orchard Parkway, Odenton, MD 21113 · Anne Arundel County · Publicly Owned Treatment Works
- Average flow
- 0.47 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 0.47 million gallons per day, serving about 8,500 residents. It discharges under NPDES permit MDL059145 (effective), which expires in December 2030, with 6 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Piney Orchard WWTP.
Available with a free Klarifi account
See the full treatment train at Piney Orchard WWTP: structures, unit processes and planned upgrades, with exact unit counts.
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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Nearby wastewater treatment plants in Maryland
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5.09 MGD
Laurel · 5 mi away
1.49 MGD
Laurel · 6 mi away
6.09 MGD
Savage · 6 mi away
16.76 MGD
Baltimore · 15 mi away
51.59 MGD
Annapolis · 15 mi away
7.94 MGD
Annapolis · 18 mi away
3.79 MGD
Baltimore · 20 mi away
107.68 MGD
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 October 26, 2026; facility record last updated May 19, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms