Tap Water V Spring water.

[Starscream]

Most "spring" water is just bottled tap water

Either use reptisafe to remove chlorine or let it sit for a day and the chlorine will "burn" off

Anymore, some places use chloramine instead of chlorine, and that won't go away for weeks at a time. I personally use bottle water for this reason, since my town does use chloramine in its water treatment facilities.