171 plants indexed. Showing 13 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.
Sudlersville WWTP is a secondary treatment facility serving 497 people in Sudlersville, Maryland. It discharges 310.40 units of treated wastewater and operates under U.S. Clean Water Act regulations.
Church Hill STP is a secondary treatment plant serving 600 people in Church Hill, Maryland, USA. It discharges 128.70 million gallons per year and has a designed capacity of 302.83 million gallons per year.
Galena WWTP is a secondary treatment plant serving 480 people in Galena, Maryland. It discharges 94.64 m³/day of treated wastewater and has a design capacity of 227.12 m³/day.
Millington_Sandfield WWTP is a secondary treatment plant serving 470 people in Sudlersville, Maryland. It discharges 208.20 units of treated wastewater daily, with a designed capacity of 397.47 units.
Vienna WWTP is a secondary treatment facility serving 548 people in Vienna, Maryland. It discharges 147.63 million gallons per year and has a designed capacity of 518.60 million gallons.
Cheltenham WWTP is a secondary treatment facility serving 220 people in Cheltenham, Maryland. It discharges treated wastewater into the local watershed, contributing to the Chesapeake Bay basin.
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.
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.
UtilityRadar indexes 171 wastewater treatment plants in Maryland, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, RISING SUN STP has the highest designed capacity at 1,893 m3/day.