As you might know, Kaweraus's water supply has chlorine in it to kill germs, parasites, viruses, etc. which is great, but once it reaches our houses, it is not necessary and is a little bit harmful, as it shortens the lives of appliances that use water like washing machines, dish washers, faucets, toilets etc. and has the less important side effects of having a bad odor and staining things with this smell. And last but not least, having a bad taste. And these are my reasons on why we need a filter in the main water line of our houses