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
Safe Drinking Water Act An airline with a non-complying aircraft must restrict public access to the on-board water system for a specified period. Sources of drinking water include both underground waters and surface waters. By 42 U.S.C. § 300j–13 each State is to delineate the boundaries of areas public water systems use for sources of drinking water. Within each source area the origins of regulated contaminants are to be identified in order to determine the susceptibility of the public water systems. This information can help communities understand the risks to their sources of drinking water. The SDWA includes a whistleblower protection provision. Employees in