Our waterways are becoming more and more polluted due to PFAS, plastics, medicines, drugs, and new chemicals made by companies that just hand over the responsibility of cleaning to plants paid for by public moneys. Detecting the different chemicals and filtering them out if getting harder and harder. Could the simple solution of heating up past a point where even PFAS/forever chemicals decomposes (400C for PFAS, 500C to be more sure about other stuff) be alright?
i personalay get my water from a well and my waste goes to a septic system. So I do treat my water at home. Fortunately the above systems are much cheaper that the proposal and work fine - I have lab results to prove it.