I live near a closed naval airbase that used to spray tons of firefighting foam containing PFAS (the bad stuff) before they realized it was hazardous. Since we get our water from a well, I had a system installed with 2 large carbon tanks (~4 feet tall each), a UV light filter (more-so for non-PFAS bacteria concerns), and a sediment filter. Then to catch anything that might slip past, I have a reverse osmosis tank filter linked up under the kitchen sink (for drinking water).

It costs about $1200 a year to have the tanks swapped out, but don't have a monthly water bill since it's a well. Public water companies claim to do the same type of filtering, but who knows what they're actually doing. It's a good feeling knowing for sure my water is clean.