I used this one as because of neccessity of pure drinking water but I think I am getting the same impure water .actually the problem is with the filter it is not taking any action in cleaning .in some days only my filter got rusted like and the waters I found something salty and sour type as of like carbonated somethat.i am not finding these product useful because its not giving any clean water for drinking .I precisely advise no one should go for this one.