Tap water has a lot of other nasty things besides chlorine. But I don't buy the claim that any of it gets absorbed through the skin. Especially not chlorine, which would immediately react with oils on the skin, fats in your skin, or all the lipid cell walls before it ever got past your epidermis. Same with chlorine in your drinking water. It would never make it into your bloodstream. Margarine on the other hand is nasty stuff.