Center for Watershed Protection
Provides practical and technical information for people and communities interested in protecting and restoring urban watersheds, primarily in the United States.

Texas Rural Water Association
A non-profit trade association with an active membership which consist of more than 750 MUD's, SUD's, non-profit water supply corporations, small-town water departments, investor-owned utilities and individual members. In addition, more than 160 water industry suppliers participate as associate members. TRWA's staff and board of directors are dedicated to helping directors, managers and operators of each member system provide efficient service and clean, safe water for their customers.

New Mexico Water and Wastewater Association
Organized and operates exclusively for scientific and educational purposes. Protects the public health and the environment

Oyster Pond Environmental Trust
Nonprofit watershed organization committed to stewardship of Oyster Pond in Falmouth, Cape Cod, MA. Site describes the pond, research on its physical and biological characteristics, and pond restoration efforts. Group encourages students to do science projects on the pond.

International Water History Association
Interdisciplinary organization promoting an understanding of the history of the control and use of freshwater resources around the world. Includes information from and about association conferences.

North American Lake Management Society
Established to foster the management and protection of lakes and reservoirs. Organization information, events, news, glossary of lake and water terms, publication information, and directory of lakes-related service businesses.

Iowa Water Pollution Control Association
Member association of the Water Environment Federation, concerned with wastewater treatment and water quality. Organization information, public education materials about current issues, job postings, and related internet links.

PA Watersheds and Rivers (POWR)
Pennsylvania statewide organization facilitating local watershed groups throughout the state. Includes information on nonpoint source pollution, volunteer water protection activities, wetlands protection, and other topics.

ILEC International Lake Environment Committee
Promotes sustainable management of the world's lakes and reservoirs. Includes issues papers, a world lake database, and journal and conference information.

Lake Pontchartrain Basin Foundation
Membership group interesting in restoring and preserving water quality in this area of Louisiana. The coordinate, educate, monitor regulations, encourage citizen action.

Sarasota Bay National Estuary Program
Dedicated to improving and protecting Sarasota Bay, Florida. Includes information on the organization, its objectives and past successes, and general information on estuaries and their functions and values.

Dabane Trust - Water Workshops
Assists Zimbabwean rural communities to develop water resources and increase food growing capacities. Includes descriptions and photos of water harvesting, dam construction, and sand-abstraction water supply projects.

Water Education Foundation
Non-profit organization educating people about water issues in California and the American West.

World Water Council
International intergovernmental and NGO network dealing with water policy topics and issues at a high level, including transboundary issues. Conferences, reports, other publications, and related resources.

FutureWater
Dutch based research organization investigating the means of best managing limited water resources.

Friends of Casco Bay
Nonprofit group that trains volunteers to help monitor Casco Bay in Maine.

PERPAMSI
Association of Indonesian water companies. The objective of the association is to promote sustainable water services in Indonesia.

Nisqually River Council
Oversees protection of the aquatic and wildlife habitats, waters, and wetlands of the river basin. Includes organization information, watershed map, reports on chinook salmon recovery efforts and other activities, and links to related sites.

Huron Pines Resource Conservation and Development
Non-profit organization dedicated to community development, conservation, water quality, habitat and river restoration. Useful information and tools developed on Northern Michigan watersheds including the AuSable River.

Indiana Rural Water Association
Addresses the needs of Indiana's small water systems by offering educational opportunities to operators, managers, and those in charge of utilities.

Water Conservation Mission
Supports water conservation efforts, to converge various programs and to co-ordinate the activities of various departments engaged in water conservation.

Canadian Association on Water Quality
An organization of scientists, engineers, technologists, administrators, and students engaged in or interested in research on water quality or on the control or treatment of water pollution.

Missouri River Communities Network
A 501(c)(3) non-profit membership organization whose mission is to enhance stewardship of the Missouri River.

International Association for Environmental Hydrology
A worldwide association of environmental hydrologists. Site offers forums, a journal and modeling software.

Cook Inlet Keeper
A citizen based nonprofit group dedicated to protecting the Cook Inlet Watershed and the life it sustains.

UK Rivers Network
Environmental organization campaigning on river issues throughout England, Wales, Scotland, Ireland, and North Ireland.