You don't have to drink the water where you live. Where I L
live everyone drinks bottled water.
https://www.consumerreports.org/health/bottled-water/pfas-in...
Otherwise, you either live in an unusual location that makes any kind of water-related infrastructure projects very expensive - like, idk., a small settlement at a summit of a mountain, or in the middle of a desert - or something is very much broken about that place.
it's not a good defense for indiscriminate contamination of water, if that's what you're trying for
You do understand that that’s worse for you, right?