1.—(1) A water supplier who introduces water into, or uses, a private water supply system for the purposes of supplying water to the premises of another person may, in respect of the water supplied, make an application in writing to the enforcing authority (in relation to the water) for a derogation from a parametric value in Table B.
(2) In relation to a supply of water to premises in the area of an enforcing authority, a person who owns or occupies the premises may make an application in writing to the enforcing authority for a derogation from a parametric value in Table B.
(3) The application must include the things referred to in paragraph 3(3)(a) to (f).