I drink tap water all the time, where i am from the tap is good, ppm are low.
i always thought that chlorine evaporated after sometime, which is most likely the case but its the new compound chloramine that is the subject to talk about
i have been meaning to contact the municipality about the contents of the water
if chloramine has replaced chlorine, then i imagine it would be useless to allow the water to sit for 23 1/2 hours.
yes i am currently organic, im giving it a whirl, and the chloramine is toxic to the microbes that i spent so much money on. it would be pointless to put them in if im going to kill them with the water.
either way you grow it could not hurt, and the units are not that expensive. I just dont want to watch a fucking trickle of water come out the spout while trying to fill a 50 gallon rez