Regulation 4 Definition of “flood”
(1)
For the purposes of sections 64 to 69 of the Act, “flood” means water, from any source external to a building, which enters a building—
(a)
(i)
at or below ground level; or
(ii)
above ground level, provided that part of the body of such water is at ground level;
and
(b)
does so with a volume, weight or force which is substantial and abnormal.
(2)
For the purposes of paragraph (1), the following do not constitute a flood—
(a)
the gradual seepage or percolation of water into a building (such as rising damp);
(b)
water escaping from a water main, drain, sewer, pipe or other thing inside a building, unless such escape was solely the consequence of a flood falling within paragraph (1).