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The Safe Drinking Water Act (SDWA) is the principal federal law in the United States intended to ensure safe drinking water for the public.〔; ; ''et seq.'' 1974-12-16.〕 Pursuant to the act, the Environmental Protection Agency (EPA) is required to set standards for drinking water quality and oversee all states, localities, and water suppliers who implement these standards. SDWA applies to every public water system (PWS) in the United States.〔A public water system has at least 15 service connections or regularly serves at least 25 individuals, at least 60 days per year. 〕 There are currently more than 160,000 public water systems providing water to almost all Americans at some time in their lives.〔(【引用サイトリンク】title=Factoids: Drinking Water and Ground Water Statistics for 2009 )〕 The Act does not cover private wells.〔EPA. ("Private Drinking Water Wells." ) 2006-02-21.〕 The SDWA does not apply to bottled water. Bottled water is regulated by the Food and Drug Administration (FDA) under the Federal Food, Drug, and Cosmetic Act.〔Federal Food, Drug, and Cosmetic Act, ''et seq.''〕 == National Primary Drinking Water Regulations == (詳細は40 CFR Part 141 ).〕 The regulations include both mandatory levels (Maximum Contaminant Levels, or MCLs) and nonenforceable health goals (Maximum Contaminant Level Goals, or MCLGs) for each included contaminant. MCLs have additional significance because they can be used under the Superfund law as "Applicable or Relevant and Appropriate Requirements" in cleanups of contaminated sites on the National Priorities List. Federal drinking water standards are organized into six groups: * Microorganisms * Disinfectants * Disinfection Byproducts * Inorganic Chemicals * Organic Chemicals * Radionuclides.〔EPA (2013). ("Drinking Water Contaminants." )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Safe Drinking Water Act」の詳細全文を読む スポンサード リンク
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