I have very hard water. Very, very hard water (country life in all its glory from the well). I bought one of these for the kitchen sink cold water line because I needed cleaner water for drinking and cooking. Water. Is working. I don't know if the bad reviews are from people who got the wrong ones? A filter connected to the water supply produces CLEAN, smelling water. It has completely removed the smell of rotten eggs from the water heater. Easy to Install: Very, very easy. I'm not a plumber, and if I can hook this up in ten seconds, so can you.
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