Just a thought--water filters do not remove viruses, so you may want to use chemical means. Or, better, double treat (both chemicals and filter)--chemicals often don't kill the parasite cysts (giardia, etc.), but they do zap the viruses where filters won't.

My backpacking days are over, but I do plan to car camp some relatively wild places this summer. I can hardly wait; I'm already getting cabin fever with this "social distancing" routine!