Tested once with tap water was then gifted a smaller option, so have kept that and selling this as good as new, effectively never used
Gravity Water Filter Straw Portable Drinking Water Filter,4-Stage,3L Water Bag
Membrane Solutions Straw Water Filter, Portable Personal Water Filter, 4 Pack
FilterWell - Portable Pocket Water Filter - (0.01 micron filter) - STATION13
miniwell Outdoor Portable Gravity Water Filter System with Water Reservoir Black
Portable Emergency Water Filter Straw - Survival Water Purifier for Hiking, Camp
