Potable Water

Potable water is stored in a 200 L water tank located in front of the wing box, behind the FWD cargo compartment.
On ground, pressurized by the air from the service panel pressure port
In flight, the water system is pressurized by the bleed air.
Potable water is piped to the galleys and lavatories.
Manual shutoff valves isolate wet galleys, the FWD lavatory, the MID lavatory and the AFT lavatory from the water system.
Manual shutoff valves are located under the washbasins or toilet bowls.
The system can be filled or drained from the service panel under the fuselage.
The indication of the water quantity in the water tank is displayed on the FAP and the aft service panel.