Water in Singapore

The running water in singapore can be drunk directly.
so when i get thirsty, i go to the toilet and drink.
But how to make a bowl of noodle?(fang bian mian)
a girl think:
"since the running water can be drunk directly,
the water from electric bathing machine(re shui qi) also can!"
so she use the water from bathing mashine to make fang bian
mian.