showering leads to greater exposure to toxic chemicals in tap water than drinking the water does
virtually every home in America has a detectable level in the air of chloroform gas — a derivative of chlorine and a known carcinogen — due to chlorine and showering
Add to this the fumes from faucets and the water in toilets.
http://undergroundhealthreporter.com/dangers-of-chlorine-in-your-shower#axzz2tMljmF2KI added an activated carbon block filter to the water line coming into the house.