raw water to the new Potomac River Filtration Plant. This facility
opened in 1961 and it has an initial capacity of 30 million gallons a
day. Eventually it will be expanded, as needed, to a capacity of at
least 120 million gallons a day, and it will serve both counties. Wells
located on the Potomac slopes of Prince George's County provide a
third source of water.

Most of the sewage from the Commission service area is trans-
ported through trunk sewers into the District of Columbia and is
treated at the District's Blue Plains Sewage Plant. The Commission
pays for this service on a metered volume basis, and it also contributes
its share to capital improvement of the Blue Plains facility. The
single sewage disposal plant operated by the Washington Suburban
Sanitary Commission is at Laurels

The Commission's facilities are geared to an anticipated growth
of the service area population to about 2,000,000 by the year 200O. The
Commission annually reviews and updates a five-year program for
development of its water and sewerage systems.
(Acts 1918, chap. 122; Acts 1920, chap. 518; Acts 1924,
chaps. 189-190, 469; Acts 1927, chaps. 606-507; Acts 1931,
chaps. 232, 522; Acts 1935, chap. 597; Acts 1937, chaps.
46, 140, 296, 391; Acts 1939, chaps. 193, 253, 267, 266, 540;
Acts 1941, chaps. 280, 668, 802, 892; Acts 1943, chaps. 460-
451, 468, 520-522, 524-526, 993; Acts 1945, chaps. 917, 1024,
11029; Acts 1947, chaps, 143, 361-363, 365, 732-734, 736, 739,
820; Acts 1947, Sp. Sess. chap. 66; Acts 1948, Sp. Sess., chap.
67; Acts 1949, chaps. 342, 537-539, 541, 728; Acts 1950, chaps.
92-94; Acts 1951, chaps. 100, 376, 384-385, 562-563, 691; Acts
1952, J. R. 6, Acts 1953, chaps. 183, 349-350, 352-358, 366,
374, 386, 430, 434, 521-522, 626, 666, 786; Acts 1966, chaps.
78-79, 117-118, 154, 231, 266, 356-358, 496, 647-659, 664, 686-
687, 717, 723; Acts 1967, chaps. 186, 271, 345, 361-363, 585-
586, 591, 624, 637, 642, 665-668, 670, 710, 779; Acts 1959,
chaps, 225, 228-229, 243, 286, 461, 470-471, 618, 654, 707,
710, 779, 786; Acts 1961, chaps. 511-514, 542, 605-610, 709,
740-742, 772, 890-891, 895).