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Blue Plains Advanced Wastewater Treatment Plant in Washington, D.C., is the largest advanced wastewater treatment plant in the world. [1] The facility is operated by the District of Columbia Water and Sewer Authority (DC Water). The plant opened in 1937 as a primary treatment facility, and advanced treatment capacity was added in the 1970s and ...
Subsequent improvements to the city water system were initiated beginning in the 1920s. The regular use of chlorine as a disinfectant began in 1923 at the McMillan filtration plant. Another treatment plant was completed in 1928 adjacent to the Dalecarlia Reservoir using a newer technology, a rapid sand filter. [2]: 101–105
The District of Columbia Water and Sewer Authority (DC Water) provides drinking water, sewage collection, and sewage treatment for Washington, D.C. The utility also provides wholesale wastewater treatment services to several adjoining municipalities in Maryland and Virginia, and maintains more than 9,000 public fire hydrants in Washington, D.C.
The Washington Aqueduct is an aqueduct that provides the public water supply system serving Washington, D.C., and parts of its suburbs, using water from the Potomac River. One of the first major aqueduct projects in the United States, it was commissioned by the U.S. Congress in 1852, and construction began in 1853 under the supervision of ...
WSSC Water connected its trunk sewers near Washington, DC into the Blue Plains system beginning in the 1930s, as the treatment plant began operation. The commission built its first sewage treatment plant in Bladensburg in the 1940s; in the 1950s this plant was closed as additional connections were made to the Blue Plains system. Most of the ...
The District of Columbia government is considering redevelopment plans for the McMillan Sand Filtration Site which is no longer used for water treatment. McMillan Sand Filtration Site is a twenty-five acre decommissioned water treatment plant in northwest Washington, D.C. , built as part of the historic McMillan Reservoir Park.
The treated water is distributed throughout the city in water mains managed by the D.C. Water and Sewer Authority. At the outlet of the Georgetown facility is a sluice gate building that controls the flow of water into Washington City Tunnel, which leads to the McMillan Reservoir.
Regular water service from the Potomac River source through the aqueduct commenced in 1864. The reservoir was modified in 1895 and 1935 to improve water quality and increase water supply. [5]: 75, 99 In the 1920s a water purification plant was built adjacent to the reservoir. The rapid sand filter plant began operation in 1927.