Here is a collection of videos all about cleaning water so you can drink it. This skill could save your life!
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Primitive technology with survival skills build a water filter tank part 3

How To Turn Salt Water Into Fresh Water (Simple Improvised Distillation)

How Seawater Desalination Works

How to Make Charcoal Water Purifier at Home - Science Project For poor & Remote Area

Michael Pritchard: How to make filthy water drinkable
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