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

Rainwater Harvesting
information on the history of water harvesting methodologies in Tamilnadu and the modern methods adopted for rain water harvesting structures and advised by TWAD Board for both the individuals & professionals.
http://www.aboutrainwaterharvesting.com/

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

USGS -- Water Resources of the United States
Home page for water resources information from the US Geological Survey
http://water.usgs.gov/

Big Brand Water Filter
Big Brand Water Filter - stocking distributor for over 100 brands of water filtration, purification and disinfection equipment
http://www.bigbrandwater.com

Clean the Rain, Clean the Lakes: Mercury in Rain Is Polluting The Great Lakes
Mercury runs many processes in our lives but we must take a stand to prevent mercury pollution because it can adversely affect wildlife and people's health.
http://www.nwf.org/mercury/

Rain Barrel Information and Sources
Read how to set up rain barrels to reduce your consumption of public water and save money, and where to buy them. Rain barrels help leave water in tapped streams so aquatic creatures can survive through drought.
http://dnr.metrokc.gov/wlr/PI/rainbarrels.htm

Van Essen Instruments
Offers water monitoring products including ground water, rain water, and sewage system overflow sensors.
http://www.vanessen.com

Asia Water Refining Corp.
Asia Water Refining Corp. is a manufacturer of RO system, water purifier, water filters and all related components in Taiwan, insisting of supplying the best quality, most competitive price and superior services to our valued clients. This aims to be our priority purpose.
http://www.awrc.com.tw

Oberlin Filter Company
Manufactures and distributes range of filtration products and equipment. Includes filter cloths, filter bags and cartridges, air filter units, and selection of new and used filter systems. Offers free analysis of wastewater samples.
http://www.oberlinfilter.com/