171 plants indexed. Showing 35 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.
Ocean Pines WWTP in Showell, Maryland serves 13,000 people. The plant is located within 50 km of the Atlantic coast and discharges 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.
Ocean City WWTP serves 205,000 people in Maryland, USA. The plant is located near the Atlantic coast and operates under the US Clean Water Act.
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.
CRISFIELD WWTP serves approximately 5,200 residents in Crisfield, Maryland. The plant is located within 50 km of the coast, discharging 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.
Marley Taylor WRF serves Saint Mary's County, Maryland, treating wastewater for over 45,000 people. The plant is located near the Chesapeake Bay, a major estuary on the Atlantic coast.
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.
Cambridge WWTF and Coll Sys serves Cambridge, Maryland, treating wastewater for approximately 14,722 residents. The plant is located near the Chesapeake Bay, an ecologically sensitive estuary.
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.
Mattawoman WWTP in Waldorf, Maryland serves over 90,000 people. The plant is located within 50 km of the coast and discharges into the Potomac River basin.
Chesapeake Beach WWTP serves approximately 10,672 residents in Calvert County, Maryland. The plant discharges treated wastewater into the Chesapeake Bay watershed, a major estuarine ecosystem on the U.S. East Coast.
UtilityRadar indexes 171 wastewater treatment plants in Maryland, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, Ocean Pines WWTP has the highest designed capacity at 1 m3/day.