1989 - Formulation of the Strategic Sewage Disposal Scheme
1989 - 制订「策略性污水排放计划」
1994 - Commencement of works on Harbour Area Treatment Scheme (HATS) Stage 1
1994 - 展开「净化海港计划」第一期的建造工程
1997 - Commissioning of chemically enhanced primary treatment works at Stonecutters Island, as part of HATS
1997 - 昂船洲化学强化一级污水处理厂投入服务，是「净化海港计划」工程的一部份
