3.—(1) Section 18 (building over sewer etc.) of the Act, and in section 21 (provision of drainage) of the Act, subsections (1) and (2), shall be repealed.
(2) In section 21(3) of the Act—
(a)for the words “(1) above” there shall be substituted the words “(4) below”; and
(b)for paragraphs (a) and (b) there shall be substituted the words “whether a proposed drain shall be required to connect with a sewer”.
(3) In section 21(4) of the Act for the words “A proposed drain” to “a sewer unless” there shall be substituted the following—
“Where plans of a building or of an extension of a building are, in accordance with building regulations, deposited with a local authority, the local authority, or on appeal a magistrates' court, may require a proposed drain to connect with a sewer where”.
(4) In section 59 (drainage of building) of the Act—
(a)in subsection (1)(a) the words “as defined in section 21(2) above” shall be omitted; and
(b)after subsection (4) there shall be added the following subsection—
“(5) In subsection (1) above, “drainage” includes the conveyance, by means of a sink and any other necessary appliance, of refuse water and the conveyance of rainwater from roofs.”.