Subsection (3) of section nine of the New Towns Act, 1946 (under which provisions of the Public Health Acts relating to sewage may be applied to new towns), paragraph (b) of subsection (4) of section eight of the Town Development Act, 1952 (under which such provisions may be applied to an authority acting under that Act), and any other enactment conferring power to apply the provisions of the Public Health Act, 1936, or the Public Health (Drainage of Trade Premises) Act, 1937, relating to sewage shall have effect as if references to the said Acts of 1936 and 1937 or either of them included references to the provisions of this Act.

Any order made before the commencement of this Act under subsection (2) of section nine of the New Towns Act, 1946, which applies all the provisions of the said Act of 1937 (or all those provisions except any which are repealed by this Act) without modification, shall have effect as if references to that Act included references to Part V of this Act, but nothing in this subsection shall affect any power to vary or revoke any such order.