With Drinking Water the Fastest Growing Worldwide Problem Here is a Solution
ABCNEWS: Water System Cutting Diarrheal Disease

For a few cents each month, families in poor countries are purifying drinking water by using diluted bleach and germ-resistant jugs as part of a program that is cutting in half the deadly cases of waterborne diarrheal diseases, U.S. health officials said Wednesday.

It is a low-tech approach that proponents say can pay for itself and even boost villages' economies. The pilot program has proved effective enough that the United States and a group of charities will seek to expand it to 20 developing countries.