Decision Delayed on Dangerous Chemical in Drinking Water
Clip: 03/15/2013 | 12m 38s
Science correspondent Miles O'Brien talks to scientists, members of the chemical industry and representatives from Pacific Gas and Electric about chromium-6 contamination in American drinking water. What is a safe level for humans to consume and why has the EPA stalled on setting a federal standard?
Aired: 03/15/13
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