At the outlet of the reverse osmosis system, the water loses minerals and its pH of the water's decreases. As a result, the amount of CO2 in the water increases. A degasser system is used at the outlet of reverse osmosis units to bring the pH to neutral level that whip off the increased amount of CO2. It is aimed to vaporate CO2 with the air flow provided from below by giving water to the degasser unit from the top. As a result of the vaporation of CO2, the pH of the water reaches a certain level and water is collected in the tank.