Building Regulations 2010 G1
Cold water supply
Official text
G1.—(1) There must be a suitable installation for the provision of—
(a) wholesome water to any place where drinking water is drawn off;
(b) wholesome water or softened wholesome water to any washbasin or bidet provided in or adjacent to a room containing a sanitary convenience;
(c) wholesome water or softened wholesome water to any washbasin, bidet, fixed bath and shower in a bathroom;
(d) wholesome water to any sink provided in any area where food is prepared.
(2) There must be a suitable installation for the provision of water of suitable quality to any sanitary convenience fitted with a flushing device.
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