it is safe to drink, but not flush your cavities with. It can contain bacteria that will kill you if they enter a sinus cavity.
@EJohn54: So I guess we shouldn't shower and get the water in our nose or ears either?
I'm guessing this is slightly blown out of proportion.What would happen if you were out in the rain and sniffed in rain water? Instant death?What if you are boating and get splashed, in your mouth? Instant death? 4951