Prior to the date of enactment of the Clean Water Act of 1977, referred to in subsec. (b)(4), means prior to the enactment of Pub. L. 95–217, Dec. 27, 1977, 91 Stat. 1566, which was approved Dec. 27, 1977.

Such Act, referred to in subsec. (b)(4), means Pub. L. 95–217, Dec. 27, 1977, 91 Stat. 1566, known as the Clean Water Act of 1977. For complete classification of this Act to the Code, see Short Title of 1977 Amendment note set out under section 1251 of this title and Tables.

1977—Subsec. (b)(1). Pub. L. 95–217, § 10(c), (d), substituted “cost of construction of treatment works required for a facility to train and upgrade waste treatment works operation and maintenance personnel and for the costs of other State treatment works operator training programs, including mobile training units, classroom rental, specialized instructors, and instructional material” for “cost of construction of a treatment works required for a facility to train and upgrade waste treatment works operation and maintenance personnel”.

Subsec. (b)(2). Pub. L. 95–217, § 10(e), authorized Administrator to make an additional grant for a supplemental facility in each of the States in any case where a grant is made to serve two or more States.

Subsec. (b)(3). Pub. L. 95–217, § 10(a), substituted “$500,000” for “$250,000”.

Subsec. (b)(4). Pub. L. 95–217, § 10(b), added par. (4).