The Defense Department denies it is responsible for perchlorate contamination of drinking water supplies, but other analysts say military sites are the source of the most serious problems around the country.rnThe Environmental Protection Agency recently made a preliminary regulatory determination that a national drinking water regulation is not necessary for perchlorate and expects to make a final determination by the end of the year (73 Fed. Reg. 60,281, 10/10/08; 39 ER 2028, 10/10/08).rnIn a notice published Oct. 10 in the Federal Register, EPA said it has concluded that "a national primary drinking water regulation would not provide a meaningful opportunity to reduce health risk." A regulatory determination is a formal decision by EPA on whether it should develop a national primary drinking water regulation for a specific contaminant under the Safe Drinking Water Act.
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机译：国防部否认是造成饮用水中高氯酸盐污染的原因，但其他分析人士说，军事场所是全国最严重的问题的根源。环境保护署最近初步确定了一项国家饮用水法规正在不需要高氯酸盐，并希望在年底前做出最终决定（73 Fed。Reg。60,281，10/10/08; 39 ER 2028，10/10/08）。在10月10日发布的公告中EPA的联邦公报表示，结论是“国家一级饮用水法规不会为降低健康风险提供有意义的机会。”监管决定是EPA关于是否应根据《安全饮用水法》针对特定污染物制定国家一级饮用水法规的正式决定。
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