5-Year, 500,000 Gallon Well Water Whole House Filter with Salt-Free Softener, UV Filtration and Professional Installation Kit Aquasana premium rhino removes 97% of chlorine for up to 500,000 gallons Simplysoft salt-free water softener is proven to reduce scale Does not require electricity, drainage, or back flushing and does not create waste-water Powerful UV filtration kills 99.99% of viruses, bacteria like e. Coli, and chlorine resistant cysts like cryptosporidium and giardia Filtering your water improves indoor air quality by reducing chemicals that vaporize in shower steam