http://ga.water.usgs.gov/edu/dictionary.html#W
USGS Water terminology dictionary
http://water.usgs.gov/
Water resources of the United States
http://pubs.usgs.gov/gip/gw/index.html
All about groundwater (aquifers)
http://www.eoearth.org/article/Wetland?topic=49514
All about wetlands
http://www.pacinst.org/reports/water_related_deaths/
A report on water-borne diseases
http://pacinst.org/issues/
The Pacific Institute creates and advances solutions to the world’s most pressing water challenges.
http://water.org/
“Water.org is challenging the traditional approach to assisting people in developing countries. Our goals are to draw attention to the world’s number one health problem, unsafe and inadequate water supplies, and to raise funds to help fight this immense problem – one community at a time.”
https://www.usaid.gov/what-we-do/water-and-sanitation
USAID website on global water crisis
http://www.worldwatercouncil.org/index.php?id=25
A world-wide organization that focuses on water problems
http://www.water.cc/
A faith-based organization focused on the need for clean water
Further Reading:
Progress on Drinking-water and Sanitation: special focus on sanitation
WHO/UNICEF Joint Monitoring Programme for Water Supply and Sanitation