Chems, pumps, and pens

I'm kinda of a Whole Foods organic dude (shocking I know). Pumps are heavy and a pain, steripens are carbon footprint heavy, but I'm chem paranoid. Like "I won't chew sugar-free gum because it tastes like chemicals" chem paranoid. Are chemicals bad for you? Do they all taste like pool water? Help a gram countin' brother out!