Résumé :
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Results of this study indicated that on a state wide basis, drinking water sources in California contain many thousands of times more nitrate than perchlorate. In fact, the highest perchlorate result reported was less than the lowest nitrate result reported. Furthermore, nitrate was much more broadly distributed than perchlorate. Of those waters that contained measurable amounts of perchlorate, the amount of nitrate in those sources was, on average, twice as much as in the overall populations of water sources.
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