• Association web sites
  
  
• Informational web sites
  
  
• Manufacturers web sites

     Association web sites

American Filtration & Separations Society: http://www.afssociety.org
American Membrane Technology Association: http://www.amtaorg.com
American Water Works Association: http://www.awwa.org
Association of Water Technologies: http://www.awt.org
Groundwater Foundation: http://www.groundwater.org
International Water Association: http://www.iwahq.org
National Ground Water Association: http://www.ngwa.org
Natural Rural Water Association: http://www.nrwa.org
Pacific Water Quality Association: http://www.pwqa.org
Water Quality Association: http://www.WQA.org
Water Environment Federation: http://www.WEF.org

     Informational web sites

Agua Latinoamerica: http://agualatinoamerica.com
California Department of Water Resources: http://wwwdwr.water.ca.gov
National Drinking Water Clearinghouse: http://www.nesc.wvu.edu/drinkingwater.cfm
Natural Resources Defense Council: http://www.nrdc.org
NSF: http://www.nsf.org
U.S. Environmental Protection Agency -- Office of Water: http://www.epa.gov/drink
U.S. Geological Survey: http://water.usgs.gov
U.S. National Academy of Sciences: http://www.drinking-water.org
Water Conditioning & Purification Magazine: http://www.wcponline.com
Water Education Foundation: http://www.water-ed.org
Water Tech Online: http://www.watertechonline.com

     Manufacturers web sites

Ametek: see Pentek
Amtrol, Inc.: http://www.amtrol.com.html
Aquatec Water Systems: http://www.aquatec.com
Aquatrex: see GE
Codeline pressure vessels: http://www.codeline.com
DESAL: see GE
FilmTec: http://www.dowwaterandprocess.com/products/ronf.htm
Fleck Controls, Inc.: http://www.PentairWaterTreatment.com
Fluid Systems: see Koch Membrane Systems
GE: https://knowledgecentral.gewater.com
Hydranautics: http://www.membranes.com
Hydrocomponents pressure vessels: http://www.hcti.com/pr/vessels/v&a.html
Hytrex: see GE
Jaco: http://www.jacomfg.com
JohnGuest: http://www.JohnGuest.com
Koch Membrane Systems: http://www.kochmembrane.com
KX Technologies: http://www.kxtech.com
Marathon Motors: http://www.marathonelectric.com/motors/index.jsp
Matrikx: see KX
Omnipure: http://www.omnipure.com
Osmonics: see GE
Pentek: http://www.pentekfiltration.com
Plymouth Products: see Pentek
Procon: http://www.proconpumps.com
Purtrex: see GE
Toray Membrane USA Inc.: http://www.toraywater.com