171 plants indexed. Showing 23 matching current filters.
Maryland's wastewater treatment is regulated by the Maryland Department of the Environment. Major plants include Blue Plains (serving the DC metro) and Back River (Baltimore). UtilityRadar indexes 171 wastewater treatment plants in Maryland with a combined designed capacity of 58,285 m³/day. The largest plant on file is Winebrenner WWTP, treating 3,785 m³/day.
Maryland's wastewater treatment is regulated by the Maryland Department of the Environment. Major plants include Blue Plains (serving the DC metro) and Back River (Baltimore).
UtilityRadar's directory currently lists 171 wastewater treatment plants across Maryland. Together these plants represent a combined designed capacity of approximately 58,285 m³/day.
By treatment level, the directory contains 56 secondary, 38 advanced, 1 primary-treatment plants. Secondary treatment (typically activated sludge with biological nutrient removal) is the most common standard.
The largest plant indexed for Maryland is Winebrenner WWTP, with a designed capacity of 3,785 m³/day.
Plant records are aggregated from publicly available regulatory data (US EPA ECHO, EU UWWTD reporting, national water authority publications), augmented by direct operator information and verified via Google Maps coordinates. Each record includes location, treatment level, capacity where known, operator and operational status. To browse plants by treatment level worldwide, see our secondary and advanced filter views, or read our guide to how sewage treatment works.
PITTSVILLE WWTP is an advanced treatment facility serving 1,100 people in Pittsville, Maryland. It discharges 299.05 million gallons per year and operates under U.S. EPA NPDES regulations.
Willards WWTP is an advanced treatment facility serving 940 people in Willards, Maryland. It discharges 302.83 units of treated wastewater, operating under U.S. Clean Water Act regulations.
Hancock STP is an advanced wastewater treatment plant serving 1,700 people in Hancock, Maryland. It discharges treated water into the Potomac River watershed, contributing to Chesapeake Bay water quality.
Clear Spring WWTP is an advanced treatment plant serving 570 people in Washington County, Maryland. It discharges 268.76 units of treated wastewater daily, with a designed capacity of 1135.62 units.
Winebrenner WWTP is an advanced treatment facility in Highfield Cascade, Maryland, serving 3,157 people. It discharges 522.39 volume units daily with a designed capacity of 3,785.40 units.
St Clement s Shores WWTP is an advanced treatment plant in Compton, Maryland, serving 706 people. It discharges 321.76 units of treated wastewater near the Chesapeake Bay.
Middletown East WWTP is an advanced treatment facility serving approximately 1,200 residents in Middletown, Maryland. It discharges 666.23 thousand cubic meters of treated wastewater annually.
Middletown WWTP in Valley Overlook, Maryland, serves 1,197 people with advanced treatment. The plant discharges 548.89 thousand cubic meters annually, operating under US EPA NPDES regulations.
White Rock WWTP in Mountaindale, Maryland, serves 265 people with advanced treatment. The plant discharges 140.06 volume units daily and has a designed capacity of 189.27 units.
Jefferson WWTP in Burgee, Maryland, serves 2,209 people with advanced treatment. The plant discharges 423.97 million gallons per year into local waterways, supporting the Potomac River watershed.
Point of Rocks STP is an advanced wastewater treatment plant serving 1,103 people in Point of Rocks, Maryland. It discharges treated effluent into the Potomac River watershed.
Greensboro WWTP is an advanced treatment facility in Greensboro, Maryland, serving about 2,000 people. It discharges treated wastewater into local waterways within the Chesapeake Bay watershed.
New Windsor WWTP is an advanced treatment facility serving 1,500 people in Maryland, USA. It discharges treated wastewater into local waterways, operating under the US Clean Water Act.
UtilityRadar indexes 171 wastewater treatment plants in Maryland, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, Winebrenner WWTP has the highest designed capacity at 3,785 m3/day.