I'm no expert on water quality, but this filter is good enough that the other fine members of my household were happy to start drinking water again (even without having lemons squeezed into it).
Also, excellent customer service if you do have any questions installing the filter, or if you think something isn't quite right.
Reach out to them if you aren't certain about something! It's American made, and American pride, they will make sure everything is working great.