• Alliance for Water Efficiency (http://www.allianceforwaterefficiency.org/)

 

• Toiletology (www.toiletology.com)

 

• The Rain Saver (www.therainsaver.com)

 

• EPA Water Sense (www.epa.gov/watersense)

 

• Rocky Mountain Institute  (www.rmi.org)

 

• GovEnergy 2009 (www.govenergy.com)

 

• Green Roofs for Healthy Cities (www.greenroof.org)

 

• Rain Gardens  (www.raingardens.org)

 

• Save the Rain  (www.savetherain.org)

 

• The H2O Conserve Calculator  (www.h2oconserve.org) 

 

• Rainwater Catchment  (www.IRCSA.org)