The fungi Phanerochaete chrysosporium and Aspergillus niger apparently can degrade PFAS chemicals. Though I'm not sure how you concentrate them enough to for bioremediation, especially in tap water, unless you can do it at the point sources.

https://escholarship.org/uc/item/2x47296b

Scotchguard got banned years ago, sounds like ski wax is next, but it sounds like it'll still be used in factories for the foreseeable future.