How to Drain a Reverse Osmosis Water Storage Tank

Close the water supply valve. Locate the ball valve on the reverse osmosis storage tank and close it.

Set a large container under the reverse osmosis filter housing and open the faucet on the system.

Allow the tank to drain completely into the container. If desired, unscrew the filter assembly and remove the filter. Rinse clean and dry the filter thoroughly before returning the filter to the unit.

Close the drain valve on the reverse osmosis system and turn the water supply valve back on. Water will begin to enter the tank.

Open the ball valve on the storage tank.