He is also a dedicated swimmer, which means his activism happens around rivers. In 2014 Andreas swam the entire length of the Rhine, and in 2017 he swam the Tennessee River in the USA, in both cases highlighting the need to address pollutants which end up in rivers from wastewater or because of inadequate sewage treatment plants. Last year (2022) as part of his Cleandanube project, Andreas swam 2700 km down the Danube river, from the Black Forest to the Black Sea. During the swim he took daily water tests, conducted workshops and met with scientists and activists – and he plans to do the same with the Elbe river next year. “Young people need to be sensitised to what can be done to keep bodies of water clean,” says Fath. Read more on his campaign for a plastic-free environment and living waters, and explore his series of talks, on his H2.org website.