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Harbour Area Treatment Scheme (HATS)
The Government has also upgraded the harbour area sewage treatment at a strategic level through the implementation of the Harbour Area Treatment Scheme (HATS). Stage 1 of HATS, which was brought into full operation in late 2001, included the construction of a chemically enhanced primary sewage treatment works on Stonecutters Island. The treated sewage is discharged through an outfall into the western part of the harbour. The areas served by Stage 1 include the whole of the Kowloon Peninsula, Tseung Kwan O, Kwai Chung, Tsing Yi, Tsuen Wan, Shau Kei Wan and Chai Wan. Stage 2A was commissioned in late 2015, redirecting the remaining sewage from the northern and southwestern parts of Hong Kong Island, which previously received only preliminary treatment, to the newly expanded Stonecutters Island Sewage Treatment Works for chemically enhanced primary treatment and disinfection, substantially improving the overall water quality of Victoria Harbour.
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| HATS overall scheme |
More details are available in the dedicated website on HATS.
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