I know someone who uses a Brita to "filter" the green hose filled water from the trailer's fresh water tank. The Brita won't filter green hose "chemicals".
We use a blue filter to fill the tank, but drink Costco (Kirkland) bottled water, which is pretty inexpensive. Some of the piped water one finds on the road can be nasty, especially over chlorinated city water.
The great part for us is giving the empty water bottles bought in NV (for no extra fee) to my challenged BIL who recycles them in CA, getting his "fee" back that he didn't pay. Apparently, this is quite an enterprise for "less fortunate" NV folks who reside near the CA border. We also give him our NV plastic bags so he doesn't have to pay for them at the CA grocery stores.
We try to do our part in the recycling game. Its for the granddaughter's future.
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Desert185 🇺🇸 (Retired Chemtrail vendor)
-Ram 2500 QC, LB, 4x4, Cummins HO/exhaust brake, 6-speed stick.
-Andersen Ultimate 24K 5er Hitch.
-2014 Cougar 326SRX, Maxxis tires w/TPMS, wet bolts, two 6v batts.
-Four Wheel 8' Popup Camper.