(Cap 358, section 4) [24 September 1999] (L.N. 224 of 1999) Cap 358AV s 1 Declaration of North Western Supplementary Water Control Zone That part of Hong Kong more particularly described in the Schedule is declared to be a water control zone and is to be known as the North Western Supplementary Water Control Zone. Cap 358AV SCHEDULE [section 1] The area of Hong Kong bounded by grey edging on a map marked NWSWCZ and described as "NORTH WESTERN SUPPLEMENTARY WATER CONTROL ZONE", signed by the Secretary for Planning, Environment and Lands on 3 September 1999 and deposited in the Land Registry at Victoria.