Sulfate is a naturally occurring constituent in water. Site presents information on research by the U.S. EPA Office of Drinking Water into health aspects of sulphate in water.

Existing and proposed U.S. standards for drinking water quality, standards enforcement, and current initiatives to evaluate the safety of specific substances in public water supplies.

U.S. EPA Office of Ground Water and Drinking Water information on drinking water and health, including the National Primary Drinking Water Standards, fact sheets on specific drinking water contaminants, and guidance regarding Cryptosporidium for people with compromised immune systems.

TEX*A*Syst helps rural residents take decisive actions to preserve the quality of their drinking water, prevent water pollution, and protect health.

A consortium of investor-owned water utilities providing water utility services to customers throughout California. Site has information on drinking water standards, water treatment, and related topics.

USGS applied environmental engineering research project which focuses on monitoring of pathogens in US water supplies. Site tells how environmental microbiology is done, and describes facilities, capabilities, collaborators. Some online articles.

SCTRWPG has been reviewing and evaluating water supply options for South Central Texas. Technical reports, presentations, general information, surveys, maps, and a guestbook can be found on this site.

A technical summary about where they get their drinking water in King County, who manages drinking water, and how it is managed.

Primer on drinking water treatment, particularly methods used in Canada's public water supplies.

Public education resources about water contaminants, their health effects, sources, management options, and how communities can protect their drinking water sources.

Describes the health benefits of magnesium.

Information primarily for and about small community drinking water systems. Includes fact sheets, educational materials, and information on water treatment technologies successfully used in small U.S. community water supply systems.

Resources on drinking water, from levels of Arsenic in drinking water to the quality of bottled water.

Offers water quality reports, list of board of directors, and information about the Safe Drinking Water Act.

Regional and statewide urban water use estimates derived from a database comprised of annual DWR surveys of urban water agencies used for urban water use forecasts.

Information on public water supply, environmental reviews, links to files, and other information.

NDWC offers technical assistance and information about drinking water treatment, management, distribution, infrastructure, Safe Drinking Water Act regulations, and ground, surface and water conservation for America's small, rural communities.

A site to allow individuals and classrooms to discover, photograph, journal and share their local water supply with the world.

International nonprofit organization sponsoring research on delivery of safe and affordable drinking water. Information on topics such as water treatment and distribution, groundwater management, monitoring, and cryptosporidium and other waterborne pathogens.

Information on common drinking water quality concerns, such as: bacteria, lead, toxic metals, giardia, coliform, MTBE, arsenic, organic chemical, rotten odors, taste problems, and iron bacteria.