This is not the kind of email you want to get at work.

"The water main repair is more extensive than originally anticipated and
will not be complete for a few hours. The plumbers believe that the water
will be turned back on by 7:00 PM tonight. In the meantime, we realize
that people must still use the restrooms, and this is fine - just please
don't flush. After the water is back on, we will go through and flush and
clean all toilets. We're sorry, but that's the best we can do right now."