Not the first time we’ve had a thread about a SIN flight going without water, though in the below case over 5 years ago it was SIN-LHR. I think the water was onboard and it was the water system which failed somehow.

https://www.flyertalk.com/forum/brit...hr-23-sep.html

After several pages of discussion, the captain (assuming they actually were the captain, but no reason to believe otherwise) posted on the thread, mainly to confirm the decision to fly was theirs alone and wasn’t made to avoid paying EC261 compensation...

https://www.flyertalk.com/forum/27257060-post98.html