171 plants indexed. Showing 116 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.
Hyattstown WWTP is a secondary treatment plant serving 105 people in Hyattstown, Maryland, United States. It discharges 18.93 MLD of treated wastewater.
Mill Bottom WWTS is a secondary treatment plant serving 550 people in Skyline Woods, Maryland. It discharges 189.27 m³/day of treated wastewater into local waterways.
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.
Woodsboro STP is an advanced wastewater treatment plant in Woodsboro, Maryland, serving a population of 1,000. It discharges 302.83 cubic meters per day and has a designed capacity of 946.35 cubic meters per 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.
ACCIDENT WWTP is an advanced treatment facility serving 365 people in Accident, Maryland. It discharges 439.11 units of treated wastewater daily, with a designed capacity of 567.81 units.
Myersville WWTP is an advanced treatment plant serving 2,600 people in Summers, Maryland. It discharges 798.72 units of treated wastewater daily, with a designed capacity of 1,135.62 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.
Fort Frederick State Park wastewater treatment plant in Four Locks, Maryland serves approximately 100 people with secondary treatment. It discharges 37.85 m³/day into the local watershed.
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.
Victor Cullen WWTP is a secondary treatment plant in Sabillasville, Maryland, serving 135 people. It discharges 68.14 thousand cubic meters per year into local waterways.
Greenridge Forestry Camp in Allegany County, Maryland, treats wastewater with advanced processes for a small population of 304. The plant discharges 37.85 million gallons per year, operating under U.S. Clean Water Act regulations.
Rocky Gap State Park wastewater treatment plant serves 2,542 people in Allegany County, Maryland, with advanced treatment and a capacity of 454.25 units. It discharges treated effluent into the local watershed, supporting the Chesapeake Bay ecosystem
Bowie State College STP in Upper Marlboro, Maryland, serves 3,857 people with advanced treatment. The plant discharges 681.37 thousand cubic meters annually, operating under US EPA NPDES regulations.
Deep Creek Lake State Park wastewater treatment plant in Garrett County, Maryland, serves a small population with advanced treatment. It discharges treated water into the local watershed, supporting the region's environmental health.
New Germany State Park wastewater treatment plant in Maryland serves 600 people with secondary treatment. It discharges 37.85 m³/day and has a designed capacity of 113.56 m³/day.
Swallow Falls State Park wastewater treatment plant in Garrett County, Maryland, serves 1,000 people with secondary treatment. It discharges 37.85 cubic meters daily into local waterways.
Greenbrier State Park wastewater treatment plant in Doubs Mill, Maryland, serves 1,500 people with advanced treatment. It discharges 37.85 megaliters annually, operating under US EPA NPDES regulations.
UtilityRadar indexes 171 wastewater treatment plants in Maryland, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, MYERSVILLE WWTP has the highest designed capacity at 1,136 m3/day.