Did you know that for about $30, you can make a great water filter that can remove up to 99% of contaminants? All you really need are a few 5-gallon buckets, some plastic pipe and fitments, and 3 grades of filtering media: fine sand, regular sand, and gravel.
This 3 part video will show you exactly how to construct not only the bio-sand filter, but upgrade it to incorporate a carbon filter to remove some of the few common contaminants that bio-sand filters miss.
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Read More at: BuildATruckCamper.com: How To Build A High Quality Water Filter Using Sand
