Hong Kong Regulations

BUILDING (STANDARDS OF SANITARY FITMENTS, PLUMBING, DRAINAGE WORKS AND LATRINES) REGULATIONS - REGULATION 41

Disposal of surface water

(1) Save as provided in paragraph (2), all surface water from a building
shall, if there is a public sewer, provided for the carriage of surface water,
at a suitable level and position within 30 m of the building, be conducted, by
means of rain water pipes and drains provided for the carriage of
surface water, to such public sewer or, where there is no such public sewer,
shall be conducted, to the satisfaction of the Building Authority, to a
public channel provided for the carriage of surface water or to the side
channel in a street. (L.N. 294 of 1976)

(2) Where there is no such public sewer and no public channel or side channel
in a street, such surface water shall be conducted, to the satisfaction of the
Building Authority, to a stream course or nullah.