maybe(will respect your privacy). We are carrying 11 gal freshwater for a ten day trip for two and it seems filters do work and alum helps clump sediment. We plan on a multistage process.One to gather water and let it settle (this is where alum helps). Then we use coffee filters to decant into second bottles. Then we will use an MSR miniworks to filter drinking water. Hopefully by the time the second stage has been done we wont need to use the MSR for cooking water.
Our freshwater requirement is 2 x the amount we will be taking and yes we need to filter sediment sometime.
Alum has been the bane of my shopping life in the East. I have been told by a Coloradan to visit a drugstore and speak to the pharmacist. Its not a high volume item and does not sometimes warrant shelf space though it is in the back closet.
First Need Purifier
Reflective Hull Decals
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