Certificates and Licenses

• State Water Resources Control Board - Water Treatment and Distribution certification
• State Water Resources Control Board - Wastewater certification 
• California Water Environment Association - Voluntary Wastewater certification
• California-Nevada Section, American Water Works Association - Voluntary Water certification

Public Water Supply and Wastewater

• American Water Works Association - A resource for the water professional's continuing education and professional development
• TrenchlessOnline.com - Technology Magazine
• Civil Engineering News - Often has water topics
• Backflow and cross-connection control - Official site for the Foundation for Cross-connection Control and Hydraulic Research
• National Rural Water Association - Links to government and water/wastewater systems
• Public Utility Home Page - Many utility resources
• Public Works.com - VerticalNet's online market place
• U.S. General Accountability Office - Source of studies on the condition of and economics of government involvement in water infrastructure

General Water Topics

• The Utility Connection - Over 4,000 resources and links for the water industry
• The Water Librarian's Home Page - Links to resources found useful to a librarian in a water resource agency
• Science for schools - The water science Web site maintained by the U.S. Geological Survey
• Water Tech - Wide range of water news including a daily email news service
• Revues des sciences de l'eau (Water sciences review) - A general scholarly water journal

Waste Treatment and Private Water Supply

• American Ground Water Trust
• The Earth Doctor - Preventing contamination at home
• Water Conditioning; Purification Magazine
• Ohio Water Well Association

California and Other Regional Public Water

• State Water Resources Control Board
• California Water Environment Association  
• California Data Exchange Center  
• California Water Association  
• UC Center for Water Resources  
• California Ground Water Association - A non-profit organization representing the groundwater industry in California
• California Department of Water Resources  

Water Resources, Watershed and Environmental Sites

• BC Water News -Brown and Caldwell Southern California Water Resources News free news service
• American Water Resources
• U.S. Water News On-Line - Multiple links
• EcoGateway - Ecology and sustainability resources
• Soil and Water Conservation Society  
• Bureau of Reclamation - Water in the U.S. West
• American Chemical Society - Environmental
• Hydrology Office, National Weather Service
• Center for Watershed Protection - Watershed-related funding, cooperation, raining