http://water.usgs.gov/edu/propertyyou.html
http://dripdrop.com/6-dehydration-facts-may-surprise/
http://www.gotwater.net/water_tips.htm
http://www.ecorazzi.com/2012/03/22/world-water-day-10-places-most-in-need-of-clean-water/
https://en.wikipedia.org/wiki/Dehydration
http://www.webmd.com/a-to-z-guides/dehydration-adults#0
http://nationalgeographic.org/media/earths-fresh-water/