International non-profit association of national organizations concerned with the properties of water and steam
Advancing global knowledge of water, steam, and aqueous systems through international collaboration, while freely sharing critical scientific insights that drive industrial innovation and research excellence.
The 2026 IAPWS Annual Meeting will be held at the Bristol Hotel in Bristol, England from 28 June to 3 July 2026. Current information can be found at IAPWS2026.com, with updates available periodically.
Interested individuals, whether or not they reside in a member country of IAPWS, are welcome to participate in the various IAPWS Working Groups.
Current Members are Australia, Britain and Ireland, Canada, Czechia, Germany and Switzerland, Italy, Japan, New Zealand, Nordic IAPWS (Denmark, Finland, Norway, Sweden), and the United States, plus Associate Members Argentina & Brazil, China, Egypt, France, Greece, India, Israel, and the Netherlands.
