171 plants indexed. Showing 40 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.
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.
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.
Kennedyville STP is a secondary treatment plant serving 234 people in Kennedyville, Maryland. It discharges 75.71 thousand cubic meters per year with a designed capacity of 227.12 thousand cubic meters per year.
Worton_Butlertown STP is a secondary treatment plant serving 556 people in Worton, Maryland. It discharges 128.70 units of treated wastewater daily, with a designed capacity of 374.75 units.
Cobb Island WWTP is a secondary treatment plant serving approximately 1,920 people in Bryantown, Maryland. It discharges 215.77 thousand gallons per day and has a design capacity of 598.09 thousand gallons per day.
Ridgely WWTP is a secondary treatment plant in Oakland, Maryland, serving 1,600 people. It discharges 469.39 thousand cubic meters annually and operates under the US Clean Water Act.
Preston WWTP is a secondary treatment plant in Tanyard, Maryland, serving 719 people. It discharges 121.13 million gallons per year into local waterways.
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.
Rising Sun STP is a secondary treatment plant serving 2,600 people in North Hills, Maryland. It discharges 810.08 thousand gallons per day into the Susquehanna River basin, ultimately reaching the Chesapeake Bay.
Spring Meadows WWTP is a secondary treatment plant serving 153 people in Spring Meadows, Maryland. It discharges 30.28 thousand cubic meters per year into local waterways.
Joppatowne WWTP is a municipal wastewater treatment plant serving approximately 7,000 residents in Joppatowne, Maryland, USA. The facility discharges into the Chesapeake Bay watershed.
Eastern Correctional Institution WWTP serves 4,100 people in Landon Station, Maryland. The facility is located within 50 km of the coast and operates under U.S. Clean Water Act regulations.
Pocomoke City WWTP serves 4,600 people in Cassatt, Maryland. The plant operates under the US Clean Water Act with NPDES permitting for wastewater discharge.
Berlin WWTP serves approximately 4,000 residents in Berlin, Maryland. The plant operates under the U.S. Clean Water Act framework with a designed capacity of 1.00 million gallons per day.
Mystic Harbour WWTP serves approximately 3,000 people in West Ocean City, Maryland. The plant is located within 50 km of the Atlantic coast and discharges into the coastal watershed.
Talbot County Region II WWTP serves 3,500 residents in Maryland, USA. The plant operates under the US Clean Water Act, discharging treated wastewater into the Chesapeake Bay watershed.
Princess Anne WWTP serves 5,400 residents in Princess Anne, Maryland. The plant is located near the coast and operates under U.S. EPA NPDES regulations.
Leonardtown STP is a municipal wastewater treatment plant serving 2,300 people in Leonardtown, Maryland, USA. It operates under the US Clean Water Act with NPDES permitting.
Centreville WWTP serves approximately 4,285 residents in Centreville, Maryland. The plant has a designed capacity of 1.00 million gallons per day and operates under U.S. EPA NPDES regulations.
Kent Nrrws_Stevensville_Grasonville serves approximately 15,826 people in Stevensville, Maryland. The plant discharges treated wastewater into the Chesapeake Bay watershed, a vital estuarine ecosystem.
UtilityRadar indexes 171 wastewater treatment plants in Maryland, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, Greensboro WWTP has the highest designed capacity at 3,081 m3/day.