Concept
Version 5
Created by Boundless
Purification of Drinking Water
Drinking Water Purification
Water is purified for drinking through a system of filters and by chemical disinfectant.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Usine Bret MG 1671."
http://commons.wikimedia.org/wiki/File:Usine_Bret_MG_1671.jpg
Wikimedia
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