I just want to treat what we drink, not bath and wash cloths, water the garden, etc.
It works very well but is not cheap and if your water is very hard you will go through the filters fast. They start to perform poorly and make the water worse when they are well past their useful life.
Oh, and the water treated by the ZW filter pitcher did read 000 ppm with the supplied meter. Tasted just like bottled water instead of well water. Not that I dislike the taste of well water. It will be interesting to see if it makes any difference in the taste of my morning coffee.