HATS STAGE 2A

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HATS Stage 2A | HATS Stage 2B 

Harbour Area Treatment Scheme (HATS) Stage 2A comprises three major works components, namely –

  1. the construction of a sewage conveyance system (SCS) to transfer sewage generated from the northern and south-western parts of Hong Kong Island to the expanded Stonecutters Island Sewage Treatment Works (SCISTW);
  2. the upgrading of eight preliminary treatment works (PTWs) along the route of the SCS; and
  3. the expansion of the SCISTW to increase its treatment capacity and to provide disinfection treatment facilities.

The construction works under HATS Stage 2A commenced in April 2008 with a total of 13 contracts awarded. HATS Stage 2A was fully commissioned in December 2015.

  1. Contract No. DC/2007/20 - Construction of Advance Disinfection Facilities at Stonecutters Island Sewage Treatment Works
  2. Contract No. DC/2007/23 - Construction of Sewage Conveyance System from North Point to Stonecutters Island
  3. Contract No. DC/2007/24 - Construction of Sewage Conveyance System from Aberdeen to Sai Ying Pun
  4. Contract No. DC/2008/09 - Construction of Sewage Conveyance System from Ap Lei Chau to Aberdeen
  5. Contract No. DC/2009/05 - Construction of Interconnection Tunnel and Diaphragm Wall for Main Pumping Station at Stonecutters Island Sewage Treatment Works
  6. Contract No. DE/2009/02 - Provision of Covers and Deodourisation Facilities to the Existing Sedimentation Tanks at Stonecutters Island Sewage Treatment Works
  7. Contract No. DC/2009/17 - Upgrading Works at Stonecutters Island Sewage Treatment Works – Sludge Dewatering Facilities
  8. Contract No. DC/2009/23 - Upgrading of Preliminary Treatment Works at North Point, Wan Chai East and Central
  9. Contract No. DC/2009/10 - Upgrading Works at Stonecutters Island Sewage Treatment Works – Main Pumping Station, Sedimentation Tanks and Ancillary Facilities
  10. Contract No. DC/2009/18 - Upgrading Works at Stonecutters Island Sewage Treatment Works - Effluent Tunnel and Disinfection Facilities
  11. Contract No. DC/2009/24 - Upgrading of Preliminary Treatment Works at Sandy Bay, Cyberport, Wah Fu, Aberdeen and Ap Lei Chau
  12. Contract No. DC/2009/19 - Upgrading Works at Stonecutters Island Sewage Treatment Works – Sludge Handling and Disposal Facilities
  13. Contract No. DC/2009/20 - Demolition of Chemically Enhanced Primary Treatment Tanks and Associated Facilities at Cyberport Sewage Treatment Works