Lo ngumzobo ochaza inkqubo yeReverse Osmosis.Xa uxinzelelo lusetyenziswa kwisisombululo esigxininisiweyo, iamolekyu zamanzi zinyanzeliswa nge-membrane ye-semi-permeable kwaye ukungcola akuvumelekanga.
I-membrane ye-osmosis ejikelezayo emva koko isusa iimolekyuli ezinzima kunamanzi, njengesodium, amanqanaba aphezulu elothe, iiminerali ezinyibilikileyo, kunye ne-fluoride.Ekugqibeleni, isihluzo se-post-carbon filters amanzi.