Governmental and Inter-Governmental

• Association of State Drinking Water Administrators
• European Water Association
• Global International Waters Assessment
• Global Water Partnership
• U.S. Bureau of Water Reclamation
• USDA, Water Quality Information Center: Water and Agriculture
• US Geological Survey: Water Resources of the US
• USEPA – Office of Water
• World Bank - Water Supply & Sanitation
  

Non-Governmental Organizations & Associations

• American Water Works Association
• Association of Clean Water Agencies
• Association of Metropolitan Water Agencies
• Brown and Caldwell's Water Resources Web Page
• Drought Monitor
• Global Water
• International Water Association
• National Association of Water Companies (NAWC)
• National Drinking Water Clearinghouse
• National Ground Water Association (US)
• Stockholm International Water Institute (SIWI)
• Water and Wastewater Equipment Manufacturers Association
• Water Enviroment Federation
• Water Systems Council
• Water Education Foundation (US)
• Water Quality Association
• World's Water
  

Commercial

• Global Directory for Environmental Technology
• Global Water Intelligence (Water Market Analysis)
• IDS Water - Water Industry Information Resource
• Water Online
• Water Strategist Community (WaterChat)

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