171 plants indexed. Showing 58 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.
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.
Chestertown WWTP serves 4,512 people in Heather Heights, Maryland. The plant operates under the US Clean Water Act and NPDES permit program, discharging treated wastewater to local waterways.
OAKLAND WWTP serves the community of Oakland, Maryland, treating wastewater for approximately 2,180 residents. The plant discharges into local waterways within the Potomac River basin.
Trout Run WWTP and Coll Sys serves Mountain Lake Park, Maryland, treating wastewater for nearly 10,000 residents. The plant operates under the US Clean Water Act's NPDES program, ensuring compliance with federal discharge standards.
Deep Creek Lake WWTP serves 3,651 people in Garrett County, Maryland. The plant discharges into the Deep Creek Lake watershed, part of the Youghiogheny River basin.
Thurmont WWTP serves approximately 5,490 residents in Thurmont, Maryland. The plant operates under U.S. EPA and Maryland Department of the Environment regulations for wastewater treatment.
Gas House Pike WWTP serves Frederick, Maryland, treating wastewater for approximately 24,898 residents. The plant operates under the US Clean Water Act's NPDES permit program.
Emmitsburg WWTP serves the town of Emmitsburg, Maryland, treating wastewater for a population of approximately 4,460. The plant operates under the U.S. Clean Water Act framework.
Brunswick WWTP serves approximately 3,500 residents in Brunswick, Maryland, as part of the town's municipal wastewater infrastructure. The plant discharges into the Potomac River watershed, ultimately draining to the Chesapeake Bay.
Ballenger_McKinney WWTP serves approximately 47,000 residents in Ballenger Creek, Maryland. The plant operates under U.S. Clean Water Act regulations, discharging treated wastewater into local waterways within the Potomac River basin.
Hurlock WWTP and Collection System serves the town of Hurlock, Maryland, treating wastewater for a population of 2,131. The plant operates under U.S. EPA and Maryland Department of the Environment regulations.
La Plata WWTP serves approximately 20,000 residents in La Plata, Maryland. The plant operates under the U.S. Clean Water Act, with a designed capacity of 1.00 million gallons per day.
Indian Head WWTP serves approximately 3,400 people in Indian Head, Maryland. The plant is located within 50 km of the coast and discharges into the Potomac River watershed.
Swan Point WWTP serves La Plata, Maryland, treating wastewater for approximately 945 people. The plant operates under US EPA NPDES regulations, discharging into the Potomac River watershed.
Federalsburg WWTF is a municipal wastewater treatment plant in Federalsburg, Maryland, serving a population of 2,626. It operates under the US Clean Water Act and EPA NPDES permit program.
Denton WWTP serves approximately 4,400 residents in Denton, Maryland, as part of the town's municipal wastewater infrastructure. The plant operates under U.S. EPA and state regulations.
Solomons Island WWTP in Lusby, Maryland serves approximately 7,000 people. The plant operates under the US Clean Water Act and discharges treated wastewater into the Chesapeake Bay watershed.
George s Creek WWTP serves Reynolds, Maryland, treating wastewater for approximately 5,660 residents. The plant operates under the US Clean Water Act framework.
UtilityRadar indexes 171 wastewater treatment plants in Maryland, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, LEONARDTOWN STP has the highest designed capacity at 1 m3/day.