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30 Sep 2018

What percentage of possible chemical contaminants are regulated, according to the EPA? Why are other such toxic chemicals not regulated, as suggested in the article?

http://www.nytimes.com/2009/12/17/us/17water.html


i cant really find the answer for this question in this article, please help me with this question

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Hubert Koch
Hubert KochLv2
30 Sep 2018

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