Hong Kong Regulations

BUILDING (CONSTRUCTION) REGULATIONS - REGULATION 88

Wells to be covered and lined

(1) The top of every well shall be suitably protected to prevent the direct
entry of any surface water or sullage water.

(2) Every excavated well of finished diameter greater than 500 mm that is not
sunk into solid rock shall be properly lined for its entire depth with
brickwork or other suitable material.

(3) Every well of finished diameter less than 500 mm shall be properly lined
where support to the sides of the well is needed.

(4) The lining of every well shall seal the well to a sufficient depth below
ground level to prevent contamination.

(5) Where a well is liable to be rendered ineffective by the accumulation of
particles drawn out of the ground a suitable filter shall be provided.
(Enacted 1990)