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Sewage is something that every human settlement must deal with : if we treat it lightly we put ourselves at risk of outbreak of water-borne diseases. The responsible handling of sewage is a big factor in maintaining a safe and healthy community, and everybody has a role to play.
Sewage Treatment in Hong Kong
At present, over 94% of the population is served by the public sewerage system, with a sewerage network of over 1,900 kilometres and over 330 sewage treatment facilities collecting and treating around 2.8 million cubic metres sewage per day.
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Stonecutters Island Sewage Treatment Works
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Sewerage Master Plans
The Government has devised Sewerage Master Plans (SMPs) to collect sewage from different catchment areas of the whole territory and transport it to sewage treatment facilities for treatment before discharge. The entire territory has been divided into 16 areas, and SMPs have been produced for all of them. The recommendations of these SMPs are being implemented progressively to cater for the present and future development needs of Hong Kong. These SMPs will be reviewed in the light of population increase and district development and proposals for upgrading works are being pursued on a priority basis.
Harbour Area Treatment Scheme
The Government implemented the Harbour Area Treatment Scheme (HATS), for handling the sewage generated from both sides of Victoria Harbour. Through a large-scale deep sewage tunnel collection system, the HATS collects sewage from both sides of Victoria Harbour and transports it to the Stonecutters Island Sewage Treatment Works for centralised treatment and disinfection before discharge. Spanning over 20 years, the HATS project was implemented in two stages and is the largest sewage treatment infrastructure project in Hong Kong's history. Since the full commissioning of HATS in December 2015, the water quality of the Victoria Harbour has been enhanced.
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