171 plants indexed. Showing 76 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.
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.
Salisbury WWTF serves 66,400 people in Salisbury, Maryland, as part of the city's municipal wastewater infrastructure. The plant operates under the US Clean Water Act and EPA NPDES permitting framework.
Fruitland WWTP serves Shad Point, Maryland, with a designed capacity of 1.00 million gallons per day. The plant treats wastewater for a population of 3,870 under U.S. EPA and state regulations.
Delmar STP and Coll Sys serves approximately 4,900 residents in Delmar, Maryland. The plant operates under the US Clean Water Act framework with a designed capacity of 1.00 million gallons per day.
Hagerstown WPCF serves approximately 54,000 residents in Hagerstown, Maryland. The plant operates under the U.S. Clean Water Act, discharging treated wastewater to local waterways.
Boonsboro WWTP serves approximately 3,336 residents in Boonsboro, Maryland. The facility operates under the U.S. Clean Water Act, with oversight from the Maryland Department of the Environment.
Easton WWTP serves 15,139 people in Talbot County, Maryland, with a designed capacity of 1.00 million gallons per day. The plant operates under the US Clean Water Act's NPDES permit program.
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.
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.
UtilityRadar indexes 171 wastewater treatment plants in Maryland, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, POCOMOKE CITY WWTP has the highest designed capacity at 1 m3/day.