Mine drink bottled spring water if I see the bowl is low and I have water in my hand...and tap (well) if I see the bowl is low and I don't have a bottle in my hand.
But I can tell you one thing...none of us like city water or purified water (like Aquafina). No matter how thirsty they are, I can't get them to drink city water. They will eat snow in the dead of winter first.