Hello friendwe used to spend a tidy sum on localmineral water guy and I was starting to worry about where these guys source their water.so decide to install RO in my house.the good thing is the machine totally trasform the taste of the water coming in the tap and mekes it taste like pacakged water.yes there is some watageof water with Ro but in a day we would need only about 20liters so the waste is justified fir us.besided, outflow is directed to my garden so technically it is not waste.the machine it self look well-built the delivery and installation and was promot.Thankyou