| Austin Greenbuilder Program: Rainwater harvesting section of sustainable building sourcebook describes the potential for collecting and using rainwater as a water supply. |
| Domestic Rainwater Harvesting: This fact sheet gives an overview of systems, component technology, planning and management, as well as the potential effects and impacts. |
| Drinking Rain Water: Ask a scientist: why can't I drink rain water? |
| HarvestH2O.com: Online community promoting sustainable water management practices. Includes articles, FAQ, and instructions for establishing collection systems. |
| Harvesting Rainwater: Case study of Anita and Eimar's rainwater house. |
| 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. |
| Rainwater Harvesting: This site provides information on rain water harvesting, including how-to, benefits of, and examples of projects that used rain water harvesting in Tamil Nadu, India. |
| Rainwater Harvesting: 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. |
| Rainwater Harvesting and Purification System: A case study is given to understand the basic process of collection and use of rainwater. |
| Rainwater Harvesting Network: Public interest research and advocacy organisation encouraging sustainable development strategies. Guides to different methods for catching water where it falls, newsletter, case histories (primarily in India), and related information. |
| Texas Water Development Board- Rainwater Harvesting: Links to the Texas Guide to Rainwater Harvesting and to equipment and services providers. |
| UK Rainwater Harvesting Association: News, rainwater harvesting FAQ, information for prospective members, goals and mission statement. |
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