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Water filtration STEM project/problem: engineer an effective water filter. Test water. Improve design. Restest, etc.

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Check out our most popular whole-house solution: The Viqua Ultraviolet (IHS22-D4) system with the PuROTwist Reverse Osmosis system. Find out why so many households LOVE their water when they have this combination.

An ancient filtration material removes pesticides from drinking water | News | Engineering for Change . Excellent article on history, biochar, and adoption of new tech cross culturally.

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from WebEcoist

14 Off-Grid Projects to Cut Your Energy and Water Usage

Idea for gray water use and simple projects that can help one save energy around the home.

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from REI

GravityWorks Water Filter System - 4 Liter

This Delivers 4 Liters of Potable Water in Just 2.5 Minutes, No Pumping Required—the Platypus GravityWorks Water Filter. #REIGifts

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