Water Filter Machine For Home For selecting the right water purifier for your home, the best machine depends on your water source and Total Dissolved Solids (TDS) level. Use a TDS meter to check your water before buying to ensure you choose the most effective and cost-efficient option. Top brands include Kent, Aquaguard (Eureka Forbes), Pureit (HUL), Livpure, Urban Company, and A.O. Smith.