Responsibility for operating a system of waterworks and sewers in Boston and surrounding communities was exercised successively by the Metropolitan Water Board (1895-1901) and Board of Metropolitan Sewerage Commissioners (1889-1901); the Metropolitan Water and Sewerage Board (1901-1919); and the Metropolitan District Commission (MDC) (since 1919), specifically its Water and Sewerage divisions. Upon abolition of the Metropolitan District Water Supply Commission (1926-1947), which constructed the Quabbin Reservoir, responsibility for that agency's capital construction projects and for those of the Water and Sewerage Divisions of the MDC was given to the MDC's Construction Division, known by 1972 as the Engineering Division. The Construction Division and its predecessors were responsible for constructing a system of waterworks to provide the Boston metropolitan area with clean water and an adequate sewerage system. Photographs document construction of the Quabbin Reservoir under the Metropolitan District Water Supply Commission; maintenance of these and other waterworks and sewers by the Water and Sewerage divisions of the MDC; and water and sewer construction completed under the Construction Division of the MDC. Projects include Works Progress Administration sewer construction in Rutland and Holden (1939-1942); Weston, Chicopee, and Southborough aqueducts (1939-1940); Spot Pond (1939-1969); Nut Island sewerage (1945-1953); Alewife Brook; City Tunnel; Deer Island; Charles River flood control; and other water and sewer projects in the Boston metropolitan area.