American Rainwater Catchment Systems Association
Promotes sustainable rainwater harvesting practices to help solve potable, nonpotable, stormwater and energy challenges throughout the world.
BBC News: Rain capture answer to water woe
Rainwater harvesting could prove a cheap, easy solution to Africa's water woes, according to a UN report.
Drinking Rain Water
Ask a scientist: why can't I drink rain water?
Online community promoting sustainable water management practices. Includes articles, FAQ, and instructions for establishing collection systems.
A case study of a rainwater collection and storage system is presented, focusing on water quality at various points: from roof runoff to an underground concrete cistern.
Harvesting Rainwater for Landscape Use
A rainwater harvesting informational website prepared by Patricia H. Waterfall, an extension agent for the University of Arizona Cooperative Extension.
International Rainwater Harvesting Alliance
IRHA provides lobbying and advocacy platforms for rainwater harvesting and provides a forum for its members to work together or share experiences for their mutual benefit.
Rain Barrel Information and Sources
Features information and resources on systems for collecting rain water.
Rain Water System Design Report
Report on rain water system designs for the new environmental science and engineering building at the University of Waterloo, Canada.
Explains the benefits, and describes simple and complex systems. Includes maintenance suggestions and an online calculator. Contributions by the Texas Cooperative Extension of Texas A&M University.
UK Rainwater Harvesting Association
News, rainwater harvesting FAQ, information for prospective members, goals and mission statement.