1800 gallons of water treating capacity isn't enough?

Hmmm...that brings up an interesting question, just how long/how well should a kit like this work? Seems to me that if you haven't found a source of potable water after you've hit the 1800 gallon mark, you've got issues to deal with that virtually no "survival box" is gonna fix.

John E
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JohnE

"and all the lousy little poets
comin round
tryin' to sound like Charlie Manson"

The Future/Leonard Cohen