@formergardener Masks first - I always use N95, sometimes in the yard and garden I use the sort with the breathing valve. They are more comfortable with exertion, but much more expensive.

Second, the filter - I use an undercounter arrangement like this:
https://www.homedepot.com/p/Premium-Drinking-Water-Filtration-System-2-Stage-with-Designer-Faucet-and-Protection-Valve-U200/313132688
But the countertop units can be used by anyone, anywhere, not just in RV's. Renters, people with limited space or who can't crawl underneath to change filters, or who don't want to do an installation.

Only a very short length of tubing runs from the housing to the tap mounted in the sink (ours is a one-piece counter and sink, so my husband had to drill a hole.) A line runs from the cold water pipe to the filter intake. No hauling water, no boiling, no pitchers. It's usually just two of us, so we change the filters about every 2-3 months.

On our unit, you use a plastic wrench (provided) to unscrew the tube, pull out the filter and replace, and reattach. I'm sure the countertop units are similar.