same bottle of UV, and cold h20 @ 2 degrees Celsius, measured with my temp probe Baltimore water is super good, must be pretty pure, philly good as well, NYC water good also, but not as good as Baltimore..some places down south, water straight nasty unless you filter it...too much chloramines or something.\ oh and FYI there's an average of 7 water main breaks in Baltimore each day...I've seen on, turned the street into a litteral river..i asked a dude how do I get to the other side, that's where I need to be, and he was like "swim" I waided thru it, but on the way back a cup pulled me back for crossin the yellow tape, and said Id have to walk around the block and go around where the water is since they are trying to work on it