Alliance for the Chesapeake Bay
http://www.acb-online.org/

American Ground Water Trust
http://www.agwt.org/

American Water Resources Association
http://www.awra.org/

Association of Metropolitan Water Agencies
http://www.amwa.net/

Baykeeper
http://www.nynjbaykeeper.org/

Canadian Water Resources Association
http://www.cwra.org/

Chesapeake Bay Program
http://www.chesapeakebay.net/

Chesapeake Research Consortium
http://www.chesapeake.org/

Community Clean Water Institute
http://www.ccwi.org/

Cousteau Society
http://www.cousteau.org/

Friends of the Falls
http://www.friendsofthefalls.org/

Global Water
http://www.globalwater.org/

Lifewater International
http://www.lifewater.org/

Millennium Water Alliance
http://www.mwawater.org/

National Water Resources Association
http://www.nwra.org/

People for Puget Sound
http://pugetsound.org/

Riverkeeper
http://www.riverkeeper.org/

Save the Bay
http://www.savebay.org/

Water Education Foundation
http://www.watereducation.org/

Water.org
http://water.org/

Water Supply & Sanitation Collaborative Council
http://www.wsscc.org/

World Water Council
http://www.worldwatercouncil.org/