[jimbo2012]

Originally Posted by Villages PL

I put tap water in a small bottle(s) and let it stand for a while. The chlorine evaporates out of the water.

Take a read thru this article

"But if you’ve ever swigged a sip of day-old water from bedside your bed or on your desk and wondered why it tastes funny, that’s because after about 12 hours it goes flat and, as carbon dioxide from the air interacts with the H2O in your glass"