Austin Greenbuilder Program
   Rainwater harvesting section of sustainable building sourcebook describes the potential for collecting and using rainwater as a water supply.
   http://www.greenbuilder.com/sourcebook/RainwaterGuide1.html

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.
   http://news.bbc.co.uk/2/hi/science/nature/6143746.stm

Domestic Rainwater Harvesting
   This fact sheet gives an overview of systems, component technology, planning and management, as well as the potential effects and impacts.
   http://www.lboro.ac.uk/well/resources/fact-sheets/fact-sheets-htm/drh.htm

Drinking Rain Water
   Ask a scientist: why can't I drink rain water?
   http://www.newton.dep.anl.gov/askasci/wea00/wea00044.htm

HarvestH2O.com
   Online community promoting sustainable water management practices. Includes articles, FAQ, and instructions for establishing collection systems.
   http://www.harvesth2o.com/

Harvesting Rainwater
   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.
   http://www.uoregon.edu/~hof/S01havestingrain/

Rain Barrel Information and Sources
   Features information and resources on systems for collecting rain water.
   http://dnr.metrokc.gov/wlr/PI/rainbarrels.htm

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.
   http://www.adm.uwaterloo.ca/infowast/watgreen/projects/library/760/final.html

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.
   http://rainwaterharvesting.tamu.edu/index.html

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.
   http://www.rainwaterharvesting.org/

Rainwater Harvesting and Purification System
   A case study is given to understand the basic process of collection and use of rainwater.
   http://ersson.sustainabilitylane.com/rainwatr.htm

Texas Water Development Board- Rainwater Harvesting
   Links to the Texas Guide to Rainwater Harvesting and to equipment and services providers.
   http://www.twdb.state.tx.us/iwt/rainwater.asp

UK Rainwater Harvesting Association
   News, rainwater harvesting FAQ, information for prospective members, goals and mission statement.
   http://www.ukrha.org/