Aquasana THD-RO3.56 is a reverse osmosis system that provides clean and healthy water for your home. It uses a combination of reverse osmosis, selective carbon filtration, and remineralization to remove over 95% of fluoride and 70 other contaminants, including lead, arsenic, chlorine, and pesticides. The system also adds back healthy minerals like calcium, magnesium, and potassium to improve the pH balance of the water. This results in water that is not only safe to drink but also tastes great. The system is easy to install and maintain, with a filter life of up to one year.