Water is available in bottles and might be worth you investing in a real giant one which I forget the cost of and that will last you maybe all week cost 26 limps to refill (you exchange empty for full)
This water should always be used but if you boil normal tap water I used it OK. don't take my word for it, I take no responsability for this advice !
, don't swallow too much in the shower is all I tried to do.