Photograph: SIWI
On 5-11 September 2010, World Water Week celebrates its 20th anniversary. SIWI, Stockholm International Water Institute, will then welcome over 2000 people to the Älvsjö Fair. These will be water experts, researchers, company representatives, environmental organisations, politicians and officials, as well as teachers and students. This year's theme is Water Quality – A Challenge, and, as usual, it ranges over visions and practical down-to-earth examples of subjects such as the environment, health, lifestyle and poverty.