Guatemala Rainwater Catchment Project 2013-2014
"Nearly 1 billion people lack access to safe water and nearly 2 billion are without adequate sanitation. Over 2 million deaths a year are attributed to unsafe water, mostly due to waterborne diarrheal diseases. Ninety percent of those who die from diarrheal diseases are children in developing countries.
A New Approach to Performance Analysis of Disinfection Using Grey System Theory