4.—(1) A local authority shall, in relation to each private water supply to any premises within its area, determine, for their respective interests, those persons who—
(a)provide the supply;
(b)occupy the land from, or on which, the supply is obtained or located; or
(c)exercise powers of management or control in relation to the supply,
and a person so determined shall, in these Regulations, be referred to as a “relevant person”.
(2) As soon as reasonably practicable after making a determination under paragraph (1), the local authority shall notify each relevant person in writing of its determination and the reasons for it.