The Federal
Water Pollution Control
Act, comprising this chapter, was originally en
acted by
act June 30, 1948, ch. 758,
62 Stat. 1155, and amended by
acts July 17, 1952, ch. 927,
66 Stat. 755; July 9, 1956, ch. 518, §§ 1,
2,
70 Stat. 498–507; June 25, 1959,
Pub. L. 86–70,
73 Stat. 141; July 12, 1960,
Pub. L. 86–624,
74 Stat. 411; July 20, 1961,
Pub. L. 87–88,
75 Stat. 204; Oct. 2, 1965,
Pub. L. 89–234,
79 Stat. 903; Nov. 3, 1966,
Pub. L. 89–753,
80 Stat. 1246; Apr. 3, 1970,
Pub. L. 91–224,
84 Stat. 91; Dec. 31, 1970,
Pub. L. 91–611,
84 Stat. 1818; July 9, 1971,
Pub. L. 92–50,
85 Stat. 124; Oct. 13, 1971,
Pub. L. 92–137,
85 Stat. 379; Mar. 1, 1972,
Pub. L. 92–240,
86 Stat. 47, and was formerly classified first to section
466 et seq. of this title and later to section
1151 et seq. of this title. The
act is shown herein, however, as having been added by
Pub. L. 92–500 without reference to such intervening amendments because of the extensive amendment, reorganization, and expansion of the
act’s provisions by
Pub. L. 92–500.