Some cool Water Purification images:
Women Marines inspect water purification station
Image by United States Marine Corps Official Page
U.S. Marines assigned to the Female Engagement Team (FET), I Marine Expeditionary Force (Forward), inspect a solar-paneled water purification device while visiting local settlements in Boldak, Afghanistan, April 5, 2010. The FET engaged in conversation with women of the area in an effort to better gain cultural awareness and ascertain family needs in support of efforts of the International Security Assistance Force assigned to the region. (U.S. Marine Corps photo by Cpl. Lindsay L. Sayres/Released)
Image by T a k
A dramatic visual comparison of the water taken from various stages of the purification process.