Quoting YULWinterSkies (Reply 33): Water in the lavatories on aircraft is NOT potable water, |
The water in the lavs is always supplied by the aircraft's potable water system. That is the exact same water that goes into the galleys.
(Ref: Any AMM, chapter 38)
Is it a good idea to drink it? = NO

Quoting Mariner (Reply 38): he washed his teeth with Evian |
In some countries, until you adjust to the local water, this can be a wise choice.
Tod