1.—(1) The title of these Regulations is the Water Supply (Water Quality) (Amendment) Regulations 2011 and they come into force on 2 February 2011.
(2) These Regulations apply in relation to the supply of water by every—
(a)water undertaker whose area is wholly or mainly in Wales; and
(b)licensed water supplier so far as relating to licensed activities using the supply system of any water undertaker whose area is wholly or mainly in Wales.