International Water Association (IWA) was founded in September 1999 by the merger of the International Association of Water Quality (IAWQ) and the International Water Services Association (IWSA). IWA is a global network of water professionals, spanning the continuum between research and practice and covering all facets of the water cycle. The Association is a non-profit organization, self-governing and run by its Governing Members. It has permanent staff housed in its headquarters in London to support the activities of the Association and its members. From geographical perspective, IWA's membership reflects over 120 countries and regions throughout the world, covering all the continents and economic circumstances. There are three member types within the Association, ie Governing Member, Corporate Member and Individual Member that make up a total membership of approximately 10,000 individuals worldwide. Click here to find out more about IWA membership.

Water Supplies Department (WSD), representing the Government of the HKSAR under the name of "Hong Kong, China", has been the Governing Member of the IWA since its formation in 1999. To ensure a wide representation of the interests of some 40 individual members and 2 Corporate members as well as the water sectors including industry, government, academia/researchers, consultants, contractors, manufacturers and suppliers in Hong Kong, the IWAHK is formed in 2003 to take over the Governing Membership from WSD to coordinate all IWA activities and foster the exchange of views and communications between different components of the water sectors in the HKSAR. The Constitution of IWAHK was adopted during the 1st General Meeting held on 30 August 2003.

Besides, IWAHK is also a Council Member of the Asia Pacific Regional Group of IWA (IWA-ASPIRE) representing Hong Kong, China to take part in the activities of the Asia Pacific Regional Group.

The IWAHK is administered by an Executive Committee (EC) comprising the Chairman, the Vice-chairman, the Secretary, the Treasurer and five Co-opted Members. Please click "Executive Committee" for details of the current establishment.