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Centers for Disease Control and Prevention
US Consumer Product Safety Association
US Environmental Protection Agency
US Food and Drug Administration
U.S.Department of Health & Human Services
National Drinking Water Clearing house
National Oceanic Atmospheric Administration
National Research Council of Canada
American Association for Advancement of Science
Association for the Advancement of Medical Instrumentation
American Council on Science and Health
American Desalting Association
American Filtration & Separations Society
American Institute of Chemical Engineers
American Institute of Chemists
American Membrane Technology Association
American National Standards Institute
American Public Health Institute
American Pharmacist Association
Association of Public Health Laboratories
Association of State Drinking Water Administrators
American Society of Mechanical Engineers
Association of State & Territory Health Officials
American Society for Testing and Materials
Association of Water Technologies
American Water Works Association
College of American Pathologies
Canadian Ground Water Association
Center for Infectious Disease Research & Policy
Canadian Institute of Plumbing & Heating
Clinical and Laboratory Standards Institute
Canadian Water Quality Association
Canadian Water Resources Association
Canadian Water & Waste water Association
Electric Power and Research Institute
Ground Water Protection Council
International Association of Plumbing & Mechanical Officials
International Bottled Water Association
International Confederation of Contamination Control Societies
International Ozone Association
Institute for Safety & Health Management
International Ultraviolet Association
National Association of County & City Health Officials
National Association of Local Boards of Health
National Association of Water Companies
National Environmental Health Association
National Ground Water Association
National Rural Water Association
Plumbing-Heating-Cooling Contractors Association
Ontario Ground Water Association
Plumbing Manufacturers Institute
Valve Manufacturers Association of America