reg 36 Water efficiency of new dwellings
(1) The potential consumption of wholesome water by persons occupying a new dwelling must not exceed the requirement in paragraph (2). (2) The requirement referred to in paragraph (1) is either— (a) 125 litres per person per day; or (b) in a case to which paragraph (3) applies, the optional requirement of 110 litres per person per day, as measured in either case in accordance with a methodology approved by the Secretary of State. (3) This paragraph applies where the planning permission under which the building work is carried out— (a) specifies the optional requirement in paragraph (2)(b); and (b) makes it a condition that that requirement must be complied with. (4) In this Part, “new dwelling” does not include a dwelling that is formed by a material change of use of a building within the meaning of regulation 5(g).