Carbonation machine with integrated water treatment and detachable water reservoir

A carbonation machine with integrated water treatment comprising:

• a carbonation system for carbonating water in a bottle attached to a carbonation head of the system;
• a detachable water reservoir, configured to be mounted on a base with an outlet port to allow outward flow of water from the reservoir;
• piping connecting the outlet port of the water reservoir to transfer water from the detachable reservoir and to pour the water into the bottle;
• a pump for pumping water out of the water reservoir and transfer the pumped water via the piping;
• a controller configured to control the pump;
• and
• one or more water treatment components fluidically connected to the piping to apply water treatment to water flowing through the piping, wherein the carbonation machine further comprises one or more valves adjustable between a first position in which stagnant water within the piping is diverted via a water return conduit and evacuated and a second position in which water from the water reservoir is transported via the piping into the bottle, and
• wherein said one or more valves is configured, when in the first position, to divert the stagnant water back into the water reservoir, and
• wherein the water reservoir comprises an upper compartment into which the stagnant water is diverted and a drain for draining water from the upper compartment into a tank of the water reservoir.