The U.S. Environmental Protection Agency (EPA, 2002) describes how biofilms can preferentially form at certain locations in piping networks, such as during low flow conditions or in dead legs. There, they gradually release bound contaminants back into drinking water...

Environmental experts attest that German waters are predominantly of poor quality. In a joint press statement, the Heinrich Böll Foundation and the German Federation for the Environment and Nature Conservation (BUND) announced on January 8th …