@AJDiamond Thanks for reaching out!
While we have had many discussions here in the community around water filtration and purification, we have not had much in terms of UV light water purifiers. In fact, @Uncle_Bob and @happy_travels are the only users who have spoken about using a Steripen. Hopefully they can jump in here and lend some of their expertise. In the meantime, we encourage you to take a look at these two threads, which contain lots of good information about water filtration and purification and some specifics around using a Steripen:
Hopefully this helps, thanks!