Watsan Natural Water Purifiers are built using state-of the art nano-technology filter medium derived out of natural siliceous and earthern ingredients and is licensed by IMMT (CSIR – Council of Science and Industrial Research) Institute  with the trademark name Terafil (TM, C) and is approved by the Department of Science and Technology (DST) India.
 
Affordable
Runs without Electricity
Needs minimal Maintenance
Needs no replacement of any cartridges and membranes
Rinse, clean the filter candles, no other maintenance necessary, life long performance!
Comes with the guarantee and Warranty with Government approved technology and license.