171 plants indexed. Showing 54 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.
Poplar Hill wastewater treatment plant in Royal Oak, Maryland serves 250 people with primary treatment. It discharges 90.85 million gallons per year near the Chesapeake Bay.
PORT DEPOSIT WWTP is an advanced treatment plant serving Port Deposit, Maryland, USA. It discharges 454.25 million gallons per year and has a designed capacity of 567.81 million gallons per year.
Elk Neck State Park wastewater treatment plant in Maryland serves 900 people with secondary treatment. It discharges 37.85 megaliters annually and is located within 10 km of the coast.
Point Lookout State Park WWTP is a secondary treatment plant in Saint Mary's County, Maryland, serving 2,770 people. It discharges 75.71 million gallons per year and is located within 10 km of the coast.
Southern MD Prerelease U is a secondary treatment plant in Cameron Ridge, Maryland, serving 230 people. It discharges 75.71 units of treated wastewater near the Chesapeake Bay watershed.
Newark STP is an advanced wastewater treatment plant in Newark, Maryland, serving 224 people. It discharges 87.06 thousand cubic meters annually and operates under the US Clean Water Act.
Hebron WWTP is an advanced treatment facility in Wicomico County, Maryland, serving 730 people. It discharges 166.56 volume units daily and is located within 10 km of the coast.
Oxford WWTP is a secondary treatment plant serving 750 people in Oxford, Maryland. It discharges treated wastewater near the Chesapeake Bay, a major estuary on the U.S. East Coast.
Martingham Wastewater Treatment System serves 719 people in Saint Michaels, Maryland, discharging secondary-treated wastewater near the Chesapeake Bay.
Talbot County Region V WWTP is a secondary treatment plant serving 900 people in Tilghman Island, Maryland. It discharges treated wastewater near the Chesapeake Bay, a major estuary on the U.S. East Coast.
Tylerton WWTP is an advanced treatment plant serving 173 people in Tylerton, Maryland, USA. It discharges 22.71 m³/day of treated wastewater near the Chesapeake Bay.
Ewell Rhodes Point WWTP is a secondary treatment plant serving 600 people in Rhodes Point, Maryland. It discharges 75.71 million gallons annually and is located within 10 km of the coast.
Chopticon High School WWTP in Morganza, Maryland, serves 1,844 people with advanced treatment. The plant discharges 3.79 million gallons per day into local waterways near the Chesapeake Bay.
Wicomico Shores WWTP is an advanced treatment plant in Barbers Quarter, Maryland, serving 1,254 people. It discharges 420.18 units of treated wastewater and operates near the Chesapeake Bay.
Forest Farm WWTF is an advanced treatment plant in Saint Mary's County, Maryland, serving 882 people. It discharges treated wastewater near the Chesapeake Bay, supporting local water quality.
QUEENSTOWN WWTP is a secondary treatment plant serving 617 people in Queenstown, Maryland. It discharges 238.48 units of treated wastewater daily, with a designed capacity of 757.08 units.
Rock Hall WWTP is an advanced treatment facility serving 1,945 people in Rock Hall, Maryland. It discharges treated wastewater into the Chesapeake Bay watershed, operating under U.S. EPA NPDES regulations.
Tolchester WWTP is a secondary treatment plant in Georgetown, Maryland, serving about 1,467 people. It discharges treated wastewater near the Chesapeake Bay, a major estuary on the U.S. East Coast.
Clifton on the Potomac WWTP is an advanced treatment plant serving 800 people in Rock Point, Maryland. It discharges treated wastewater near the Potomac River estuary, operating under US EPA NPDES regulations.
Jude House Package WWTP Bel Alton WWTP is a secondary treatment facility serving 345 people in Chapel Point Woods, Maryland. It discharges 37.85 megaliters of treated wastewater annually.
UtilityRadar indexes 171 wastewater treatment plants in Maryland, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, ROCK HALL WWTP has the highest designed capacity at 1,912 m3/day.