The PL40T50 RO system is made in the us and includes a 5 year guaranty at the NSF 3.2 gallon storage tank and an entire life guaranty at the NSF/Prop 65 lead free tap.PuROLine PL40T50 4 Stage reverse osmosis system delivers as much as 50 gallons or water per day with a Desal membrane. The PuROLine PL40T50 RO system includes a 3.2 gallon tank, auto close off valve, John Guest fittings, NSF/Prop 65 lead free air gap tap, and three/8″ from tank to tap.