Is it legal to turn off water fountains in a public building?

[Iris]

The technical college I work at 1 day week is going to turn off the water fountains in an effort to save water b/c of the drought. We were instructed to "plan accordingly" and informed that bottled water could be purchased in the snack bar and from the vending machines.

Never mind the fact that the school has auto-flush toilets that flush 2 times before your cheeks hit the seat.