Drinking water Technology, Eawag, developed a method by which hazard maps could be produced for geogenic toxic substances in groundwater. This provides an efficient way of determining which wells should be tested. Parameters for drinking water quality typically fall within three categories: Physical and chemical parameters include heavy metals, trace organic compounds, total suspended solids (TSS), and turbidity. Microbiological parameters include Coliform bacteria, "E. coli", and specific pathogenic species of bacteria (such as cholera-causing "Vibrio cholerae"), viruses, and protozoan parasites. Chemical parameters tend to pose more of a chronic health risk through buildup of heavy metals although some components like nitrates/nitrites and
Drinking Water Directive 1998 The Commission's solution to address this issue has been to include transparency requirements for the biggest water suppliers to publish information on their water leakage and energy consumption. The Water Resources Act 1991 was used to introduce the Drinking water directive into UK law. In the UK, the Drinking Water Inspectorate is responsible for reporting on drinking water quality to the European Union. The Water Services Regulation Authority, or Ofwat, is the body responsible for economic regulation of the privatised water and sewerage industry in England and Wales. Ofwat has been successfully reducing the water leakage in England by setting