USA

Government Agencies

• United States Environmental Protection Agency
  www.epa.gov
• US Geological Survey
  www.usgs.gov

Professional/trade Associations

• Water Environment Federation
  www.wef.org
• American WaterWorks Association
  www.awwa.org
• National Ground Water Association
  www.ngwa.org

Business and Industry

• Zero Emissions Research Initiative
  www.zeri.org
• Sustainable Business.com
  www.sustainablebusiness.com
• Trade and Environment Database
  www.american.edu

Water Resources

• US EPA Office of Water
  www.epa.gov/OW
• Directory of Water and Wildland Expertise
  www.nceas.ucsb.edu/exp

Information resources

• Environmental Defence Fund Chemical Scorecard
  www.scorecard.org
• EPA Envirofacts Warehouse
  www.epa.gov/enviro
• HC Information Resources Inc.
  www.hcinfo.com