Prepared Airman shows that he uses in the field to supply water for a team. It should also work for a family that enjoys backpacking, camping in unimproved campgrounds without potable water, or even for a group that is bugging out. You will notice that despite the filters used for providing the group with water, he also uses a Grayl Geopress for personal use. The thing about the Geopress, though, is that it can quickly process water--much faster than other personal systems--so if you had to you could use it to supply water to a group over a short period of time. The limitation is the filter life, which is why you might want to go with some other filters for a large group or for an extended period of time. (See this video testing various water filters).
VIDEO: "The Water Kit That Keeps a Team Alive: My Water Kit for the Field"
PreparedAirman (13 min.)
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