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Water Quality
Water quality refers to the purity of water; good water quality generally infers low levels of contaminants or pollutants.
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41. Drinking Water and Health Basics
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.
http://www.epa.gov/safewater/dwhealth.html
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Rating: [0.00] Votes: [0] Hits: [158] | Apr 21, 2006

42. CBC Backgrounder: Water Treatment Methods
Primer on drinking water treatment, particularly methods used in Canada's public water supplies.
http://cbc.ca/news/indepth/background/water_treatment.html
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Rating: [0.00] Votes: [0] Hits: [157] | Apr 21, 2006

43. Nutrient Net Demo
Demonstration of a market-based approach for protecting and improving water quality. Nutrient trading involves allowing sources to trade in ways that meet local and watershed-wide water quality goals.
http://www.nutrientnet.org/
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Rating: [0.00] Votes: [0] Hits: [154] | Apr 21, 2006

44. World Water Resources and Their Use
Information on quantities and forms of water worldwide, including discharge of rivers, as well as water use and demand. From UNESCO and Russian State Hydrologic Institute.
http://espejo.unesco.org.uy/
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Rating: [0.00] Votes: [0] Hits: [154] | Apr 21, 2006

45. Environmental Protection Agency, Ireland - National Freshwater Quality Database
Web interface to database of water quality in Ireland. Interactive maps and graphs show water quality for rivers and lakes throughout the country. Also includes links to reports on inland water quality. (Requires Java 1.1 browser.)
http://www.epa.ie/rivermap/index.html
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Rating: [0.00] Votes: [0] Hits: [153] | Apr 21, 2006

46. Environment Canada's Freshwater Web site: Frames version
Organized by issue, the site is designed to educate us about the importance and extent of fresh water in Canada. Topics include: the nature of water, water management, policy and legislation, and water and culture. Also links to other water-related Web sites.
http://www.ec.gc.ca/water/index.htm
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Rating: [0.00] Votes: [0] Hits: [152] | Apr 21, 2006

47. Hillslope and Watershed Hydrology Lab, Oregon State University
Conducts research on the hydrologic cycle, particularly runoff generation processes in diverse watersheds. Includes publications and presentations, information about opportunities for students, and related links.
http://www.cof.orst.edu/cof/fe/watershd/
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Rating: [0.00] Votes: [0] Hits: [152] | Apr 21, 2006

48. Christina River Basin / Watershed of Delaware, Maryland, and Pennsylvania
Information hub and method of public outreach for enhancing informed public participation in watershed management in the Christina River Basin of Delaware, Maryland, and Pennsylvania.
http://www.wr.udel.edu/cb/index.html
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Rating: [0.00] Votes: [0] Hits: [150] | Apr 21, 2006

49. Sulfate in Drinking Water
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.
http://www.epa.gov/safewater/sulfate.html
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Rating: [0.00] Votes: [0] Hits: [150] | Apr 21, 2006

50. Water Web Consortium
Internet directory, webring, online forums, and international workshops intended to promote the sharing of information concerning water and the earth's environment.
http://www.waterweb.org/
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Rating: [0.00] Votes: [0] Hits: [150] | Apr 21, 2006

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