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1 January, 13:32

By 1999, after the Clean Water Act had been passed in 1970, the percentage of U. S. surface waters safe for fishing and swimming had increased from 36 percent to

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  1. 1 January, 14:17
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    The answer is 62 percent. By 1999, after the Clean Water Act had been passed in 1970, the percentage of U. S. surface waters safe for fishing and swimming had increased from 36 percent to 62 percent.
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