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February 2008 <br /> (19 <br /> NSF Fact Sheet on Fluoridation Chemicals <br /> Introduction <br /> This fact sheet provides information on the fluoride containing water treatment additives that <br /> NSF has tested and certified to NSF/ANSI Standard 60: Drinking Water Chemicals - Health <br /> Effects. According to the latest Association of State Drinking Water Administrators Survey on <br /> State Adoption of NSF/ANSI Standards 60 and 61, 45 states require that chemicals used in <br /> treating potable water must meet Standard 60 requirements. If you have questions on your state's <br /> requirements, or how the NSF/ANSI Standard 60 certified products are used in your state, you <br /> should contact your state's Drinking Water Administrator. <br /> Water fluoridation is the practice of adjusting the fluoride content of drinking water. Fluoride is <br /> added to water for the public health benefit of preventing and reducing tooth decay and <br /> improving the health of the community. The U.S. Centers for Disease Control and Prevention is <br /> a reliable source of information on this important public health intervention. For more <br /> information please visit www.cdc.gov/fluoridation/. <br /> NSF certifies three basic products in the fluoridation category: <br /> 1. Fluorosilicic Acid(aka Fluosilicic Acid or Hydrofluosilicic Acid). <br /> 2. Sodium Fluorosilicate(aka Sodium Silicofluoride). <br /> 3. Sodium Fluoride. <br /> NSF Standard 60 <br /> Products used for drinking water treatment are evaluated to the criteria specified in NSF/ANSI <br /> Standard 60. This standard was developed by an NSF-led consortium, including the American <br /> Water Works Association (AWWA), the American Water Works Association Research <br /> Foundation (AWWARF), the Association of State Drinking Water Administrators (ASDWA), <br /> and the Conference of State Health and Environmental Managers (COSHEM). This group <br /> developed NSF/ANSI Standard 60, at the request of the US EPA Office of Water, in 1988. The <br /> NSF Joint Committee on Drinking Water Additives continues to review and maintain the <br /> standard annually. This committee consists of representatives from the original stakeholder <br /> groups as well as other regulatory,water utility and product manufacturer representatives. <br /> Standard 60 was developed to establish minimum requirements for the control of potential <br /> adverse human health effects from products added directly to water during its treatment, storage <br /> and distribution. The standard requires a full formulation disclosure of each chemical ingredient <br /> in a product. It also requires a toxicology review to determine that the product is safe at its <br /> maximum use level and to evaluate potential contaminants in the product. The standard requires <br /> tes— tines ofet�atment chemical products, typically by dosing these in water at 10 times the <br /> maximum use level, so that trace levels o contaminants can be detected. A toxicology evaluation <br /> of test results is required to determine if any contaminant concentrations have the potential to <br /> cause adverse human health effects. The standard sets criteria for the establishment of single <br /> product allowable concentrations (SPAC) of each respective contaminant. For contaminants <br /> regulated by the U.S. EPA, this SPAC has a default level not to exceed ten-percent of the <br /> regulatory level to provide protection for the consumer in the unlikely event of multiple sources <br /> of the contaminant,unless a lower or higher number of sources can be specifically identified. <br />