Norwegian:
Basin Programme
Foreningen for internasjonale vann- og skogstudier (FIVAS) (in Norwegian)
Nature Society And Water, University of Bergen
Norwegian Hydrological Council (in Norwegian)
Norwegian Institute for Water Reserach (NIVA)
Norwegian Water Network
The Norwegian Water Resources and Energy Directorate (NVE)
Other Scandinavian:
Stockholm International Water Institute
Tema Vatten i Natur och Samhälle (Linköping Universitet)
United Nations:
FAO Food and Agriculture Organization - AQUASTAT
International Hydrological Programme
UNESCO Water Portal
United Nation Environmental Program UNEP/GRID-Arendal
United Nations Environment Programme GEMS/WATER
WMO - Hydrology and Water Resources Programme
World Meteorological Organization (WMO)
International Water Pages:
American Water Resources Association
American Water Works Association
Aquanova - network for water industry
CSIRO Land and Water
Desalination Directroy Online
ETNET-European Thematic Network of Education and Training for Environment - Water
Ecology WWW page
Ecology and Progress
EnviroInfo
EnviroLink Network
Euro-Mediterranean Information System on the know-how in the Water Sector
European Desalination Society
European Rivers Network and RiverNet
European Water Association
Foundation for Water Research
Global
Global Change System for Analysis, Reserach and Training (START)
Global Precipitation Climatology Centre (GPCC)
Global Runoff Data Centre - Bundesanstalt für Gewässerkunde
Global Water Partnership Water Forum
Great Lakes Information Network
Green Cross International
Green Pages
Groundwater Foundation
Groundwater.com
H2O China
H2O-scanner.com
Hydrology Forum
Hydrology Web
Hydroweb
IHE-Delft, International Institute for Infrastructural, Hydraulic and Environmental Engineering
Indigenous Water Initiativ
Infoagua (spanish)
Information Bridge
Institute of Water Research- Michigan State University
International Association for Environmental Hydrology (IAEH)
International Association of Hydraulic Engineering
International Association of Hydrological Sciences (IAHS)
International Desalination Association
International Network of Basin Organizations
International Office for Water
International Water & Sanitation Centre IRC
International Water History Association
International Water Law Project
International Water Management Institute
LAKENET
Land Soil and Water Internet Resources
Lifewater Canada
Living Lakes
Middle East Desalination Research Center
Middle East Water Information Network
National Water Research Institute (Canada)
Netherlands Water Partnership
Network for Water and Sanitation (NETWAS)
Nile Basin Programme
River Network
Spanish Water Information System
Sustainable Life - Water
The Bottled Water Web
The European Environment Agency
The Global Network of Environment & Technology
The Hydrogeologist's Home Page
The International Rivers Network
The International Water Academy
The Irrigation Association
The River Basin Initiative
The Water Page
The Water Web Ring
The World Bank Group: Water Supply & Sanitation
The World Commission on Dams
The World's Water
Transboundary Freshwater Dispute Database
UK Groundwater Research Database
Universities Water Information Network
Urban River Awarness
Water Aid - Water for Life
Water Balance in Major River Basins in the World
Water Education Foundation
Water Environment Federation
Water Online
Water Partners International
Water Quality Information Center (U.S. Dep of Agriculture)
Water Research Commission
Water Resources Databases
Water Supply and Sanitation Collaborative Council
Water and Sanitation Program
WaterTech Online
WaterWeb
WaterWiser
Waterinfo
Waternunc.com - The Water Economy Website
Watershed Information Network (USA)
Waterwatch
Wetlands International
World Water Council
World Water Forum
Worldwatch Institute
Yearbook of International Co-operation on Environement and Development