As someone who lives on a well that sometimes dries up, I'd love to have a backup/redundant technology like this around. I wonder though, does it also capture

As someone who lives on a well that sometimes dries up, I'd love to have a backup/redundant technology like this around. I wonder though, does it also capture pollutants? ie: what kinds of things would someone in a developed region with gas/coal/etc have to worry about with a system like this?