Chew valley around here mate which comes from the mendip hills and is filtered through limestone as it comes down which causes limescale in our water, regarding this salt filtration I,m really struggling to get my head round it, my neighbour is a 65 yr old retired plumber has the electrical gadget and swears by it, I,ve worked with him over a 30 year period off and on and have never seen anyone ask for a saltwater filter, but loads with the little electric thing and I have worked in an average of three different houses a week all around the southwest of England and have never once encountered