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A comment on Unsafe levels of toxic chemicals found in drinking water for 6M Americans. Parent comment

Re:Unsafe levels of toxic chemicals found in drinking water ... by hueving on Thursday August 11, 2016 @02:10AM (#12266544)
Ppm vs ppt is 6 orders of magnitude difference. To put that in context, 6 orders of magnitude the other way would be part per part.
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