US federal agency responsible for protecting and improving water quality. Details of national water programs, online library, local information, laws, and kids page.

They support integrated water resources management programmes by collaboration, at their request, with governments and existing networks and by forging new collaborative arrangements.

Subsidiary of the International Water Association offering information services on drinking water, wastewater and related environmental fields.

International electronic journal publishing original research papers in the areas of hydrology (surface and groundwater), water quality, hydrobiology, ecotoxicology, potable and wastewater treatment and water resources management.

State-owned organization dedicated to research, development, transfer of technology, and education related to water management and conservation. Find details of mission, infrastructure, products, and services. [Spanish, English]

Comprehensive database of the Netherlands water community. Includes information on organisations with their geographic/technical areas of expertise, water projects, and international water events. Describes water issues and projects in all parts of the wo

Internet directory for hydrologic modeling, GIS, GPS and remote sensing.

Home page for water resources information from the U.S. Geological Survey. Topics include ground water, surface water, water use, water quality, acid rain, toxic substances hydrology.

For water and wastewater professionals. Industry news, regulatory updates, latest technology announcements and employment opportunities

Internet directory, webring, online forums, and international workshops intended to promote the sharing of information concerning water and the earth's environment.

Articles explore prehistoric and historic water projects worldwide.

Describes what a watershed is, how a water cycle works, and shows how the last glacier shaped the western Pennsylvania/southwest New York region. Focus is on how water works within natural systems, and how human activities can impact water quality.

The Water Resources Data System is a clearinghouse of hydrological and climatological data for the State of Wyoming