The water does not touch the coal so how would it get contaminated? Its like saying the water in your engine gets contaminated with fuel &amp; oil... just can't happen unless there is a major problem. I live in Newcastle NSW Australia, a coal capital with an ocean, lake &amp; rivers that everyone swims in &amp; yes the coal dust falls into the water. Coal dust has been falling in the area for my whole 42yr life &amp; none of us glow. Sucks to have a white house that turns greyish black if you don't wash it down but hay.