After covid I noticed that drinking tap water was making me noticeably worse but buying packaged mineral water didn't (this was done over a few months). I later

After covid I noticed that drinking tap water was making me noticeably worse but buying packaged mineral water didn't (this was done over a few months). I later bought reverse osmosis and never hit that problem since. However, this year I learned that I live in a high-PFAS area (up to 300ng/L) so I am wondering if I was hitting PFAS overload somehow. Most of my flowers died quickly after watering them with the same tap water as well (when I still tried to have some house flowers).