I had the same experience working at a daycare. The construction workers broke the water main and we were all out of water. What was worse was the owner made us stay open, he contacted Health Services and they said as long as we can walk to somewhere that could supply us with buckets of water we didn't have to shutdown.
I was so mad that I called all of the parents in the center and warned them what was happening because that was just disgusting. We had kids ages 6 weeks to 12 year olds. No water to make bottles, wash hands, clean up..nothing. Amazingly a lot of the parents knowingly left their kids there under those circumstances. If I was a parent there, I would have immediately picked up my child. Yuck.