You have to make your choices in life. I quit urban life and moved to a rural place where I own my solo well. Had the water tested. When I lived urban, even though I knew exactly where my water started (Yakima Pass, Cascade Mountains, head of the Cedar River that serves part of Seattle – and yes I hiked to it, it’s on the PCT) the water was heavily treated, though it was quite clean to start off with. My water isn’t treated now. It’s pure and filtered through ancient rock. But city water…is so heavily treated.
At home we drink only out of US-made canning jars. Glass made in China? Nope. Not happening. I try to buy very little from China in general these days. Some you cannot avoid, of course.
We only cook in US-made cast iron pans and stainless steel at home. I prepare nearly all our food from scratch.
I grow much of our food, on our wind-swept land on this island. And I preserve it.
So when I travel….I honestly just do not care. To me it’s no different than when I eat out (which is rare now). I turn my mind off and just do not worry. If I use plastics then, so be it.
Because I lowered my use everyday to very little I can splurge all I want when traveling.
Having said that…for many people in the world just having clean water – in a freaking plastic bottle – is akin to winning the lottery. Where people still walk for miles daily to get water from a hole in the ground. That may contain parasites and animal waste.
So don’t get so bougie you forget that at least most days you have relatively clean water, that you can turn on and off 24/7.
It could be a LOT worse than nanoparticles. I fully understand just how privileged I am with my well.
But honestly, live the best you can and then don’t sweat it when you hike.