One other concern I have is PFAS (microplastics). PFAS chemicals don't break down easily over time and are able to dissolve in water.
Here is a picture from the Huntsville Utilities 2022 report section on PFAS:
The source:
https://www.hsvutil.org/revize_photo_gallery/VariousDocuments/Huntsville%20CCR%202022.pdf
A map: