[3] Wilson stressed the importance of better planning, increased control of pollution discharges, and large-scale investment in improved sewage disposal infrastructure.

He stated that Hong Kong needed more treatment facilities and new outfalls constructed sufficiently far out to sea, and promoted a new department to help achieve this.

Originally called the Strategic Sewage Disposal Scheme, the plan was drawn up in 1989 and construction of HATS Stage 1 commenced in 1994.

[4] The department has built several significant bored tunnels designed to intercept water running down mountain slopes and divert it from urban areas in order to prevent flooding.

It is a 3.7-kilometre tunnel, stretching from Shek Kip Mei to an outfall near Stonecutters Island, built at a cost of $1.7 billion.

Past Chai Wan Kok, it parallels the Tuen Mun Highway a short distance and then empties into the Rambler Channel.