... filters: 1.Standard 5 stage RO system 2.Standard filter ,buy and change it easily ! 3.Food grade material ... 50HzRated power:30WUtilization of water:50%RO 5 stage systemFilter PP, GAC, CTO 50G CSM membrane 3.0G pressure storage ... steel drinking water tap With LED display Stage 1:(PP)5 micron sediment filter,it's effective removing dirt, rust and sand ... barium,mercury, sodium.Stage 5:T-33 post carbon filter