I am sure governments will be able to externalize the cost of such an undertaking to Dupont and 3M, right? Right?

For most urban areas where this contamination is prevalent (old dry cleaner & brake cleaner spills), there are a limited number of well heads that pull from the polluted aquifers to supply municipal water.

If we can just keep existing PFAS out of our drinking water, and stop PFAS production, it's a massive improvement over the status quo.

We'll stil get it from food that uses untreated water to grow, and the wider environment still suffers, but it remains a big step.