I am so confused as to why people baby their snakes so much lol; I mean cmon these animals survived millenia because they grab their prey and use their entire bodies to strangle the animal to death. You really think a minuscule amount of chlorine (that will evaporate within an hour) will do any harm to it? Snakes are hardcore man, they can have a showdown with a rat and just sit there going "COME AT ME BRO!".

tl;dr: I use tap water...lol