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      "title": "Perchlorate Contamination of Drinking Water: Regulatory Issues and Legislative Actions",
      "summary": "Perchlorate is the explosive component of solid rocket fuel, fireworks, road flares, and other products. Used heavily by the Department of Defense (DOD) and related industries, perchlorate also occurs naturally and is present in some organic fertilizer. This soluble, persistent compound has been detected in drinking water supplies, especially in California. It also has been found in milk and many foods. Because of this widespread occurrence, concern over the potential health risks of perchlorate exposure has increased, and some states, water utilities, and Members of Congress have urged the Environmental Protection Agency (EPA) to set a federal drinking water standard for this chemical. Regulatory issues have involved the health risk reduction benefits and the costs of federal regulation, including environmental cleanup and water treatment costs, both of which are driven by federal and state standards.\nEPA has spent years assessing perchlorate\u2019s health effects and occurrence to determine whether a national standard is warranted. The Food and Drug Administration (FDA) has supported this effort by testing produce and other foods for the presence of perchlorate. Interagency disagreements over the risks of perchlorate exposure led several federal agencies to ask the National Research Council (NRC) to evaluate perchlorate\u2019s health effects and EPA\u2019s risk analyses. In 2005, the NRC issued its report, and EPA adopted the NRC\u2019s recommended reference dose (i.e., the expected safe dose) for perchlorate exposure. Subsequent studies raised more concerns about the potential effects of low-level exposures, particularly for infants in certain cases.\nIn October 2008, EPA made a preliminary determination not to regulate perchlorate in drinking water. Then, in early January 2009, the agency announced that it again would seek advice from the NRC before making a final determination. EPA also announced that it was replacing the preliminary remediation goal for perchlorate of 24.5 parts per billion (ppb) with an interim health advisory, which contains a value of 15 ppb.\nIn August 2009, the EPA Administrator announced that the agency would reevaluate the science regarding perchlorate\u2019s potential health effects, with particular emphasis on evaluating the effects of perchlorate exposure on infants and young children. The agency determined not to ask the NRC to conduct further review of issues related to perchlorate, having concluded that additional NRC review would unnecessarily delay the regulatory decision-making process. EPA intends to consider public comments before making a final regulatory determination. \nPerchlorate legislation in this Congress includes H.R. 3206, which would require EPA to set a drinking water standard for perchlorate. No action has been taken on this bill. Among perchlorate contamination cleanup bills, the House passed H.R. 4252 to direct the U.S. Geological Survey to complete a study of water resources (including a study of perchlorate contamination of ground water) in the Rialto-Colton Basin, California. In July 2010, the Senate Committee on Energy and Natural Resources ordered H.R. 4252 to be reported, without amendment. This report reviews perchlorate contamination issues and related developments.",
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      "title": "Perchlorate Conatmination of Drinking Water: Regulatory Issues and Legislative Actions",
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