Technically, it is definitely possible. There could be a system to pump and treat the water, but the costs would be incalculable. We would have to add some zeros to the $15 million figure. So that is not a viable option.
The fact that these are nicknamed forever chemicals tells us that PFAS will be sticking around in the water table for a very long time. The alternative would be to get water from a well a long way away that is not contaminated and pipe it in to La Baie.