36.—(1) This Part applies to the performance by a local authority of their duty under section 77(1) of the Act (general functions of local authorities in relation to water quality) insofar as that duty relates to water supplies which are not private supplies.
(2) In this Part “specified relevant supplier”, in relation to a local authority, means—
(a)a water undertaker any of whose water supply zones include an area which is situated within the area of that authority; or
(b)a water supply licensee which uses any such water supply zones for the purposes of supplying water to consumers.
37.—(1) In performing their duty under section 77(1) of the Act, a local authority—
(a)must make such arrangements with the specified relevant supplier as will secure that the authority is notified as mentioned in regulation 35(6)(a)(i); and
(b)may take, or cause to be taken, and analyse, or cause to be analysed, by a person designated by them in writing, such samples of the water supplied to premises in their area as they may reasonably require.
(2) Regulation 15 applies to samples taken by virtue of paragraph (1) as it applies to samples taken for the purposes of Parts 4 and 5 of these Regulations, but regulation 15(1) is to be read as if for the words “water undertaker or supplementary licensee” there were to be substituted “local authority”.