Here's the deal, I drink tap water. I have no problem with tap water. If the city and state are deeming it clean enough to run to my house or place of work for showering and washing dishes, I'm going to go out on a ledge and assume it's also safe to drink, a real daredevil, I know.
Does that stop people at work from giving me the stink eye or dirty stares like I'm some kind of social pariah when I refill the same water bottle over and over again for a week or two? Nope. Look, I'm not judging you for paying $2.00 a bottle for a natural resource that runs freely to your sink, all the while contributing another plastic bottle to an already massive environmental problem, don't judge me for being silly enough to think that re-using the same plastic recepticle that you're using is perfectly safe.
And to the hipsters and hikers who'd look down on me because they won't drink out of anything short of a $20 Nalgene bottle, I ask what makes you think your overly expensive bottle is any better than mine? I wash my old Poland Spring bottle out each day, it's not a bacteria growing science project or anything. The only difference between my recycled bottle and your ritzy cannister is yours has markings to denote exactly how many milli-liters you've drank today. Not that most of you could tell me what a frigen milli-liter is anyway. Who even uses that standard of measurement? We're from America and we use ounces. Don't go trying to confuse everyone with your sophisticated metric system. That shit's for commies and Euro trash.