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Topic: Water quality

	Water Quality Theme Page
		Water Unit: Physical Properties: Part 2 of 6 Introduces students to the physical properties of water by having them guide water droplets around a race course outlined on a piece of wax paper.
		Water Unit: Surface Tension: Part 3 of 6 This unit introduces students to the physical properties of surface tension on water by floating a needle on it.
		Water Unit: The Uses of Water: Part 6 of 6 This final activity involves the students in categorizing the uses of water.
	www.cln.org /themes/water.html (1771 words)

	Encyclopedia: Water quality
		Another general perception of water quality is that of a simple property that tells whether water is polluted or not.
		In fact, water quality is a very complex subject, in part because water is a complex medium intrinsically tied to the ecology of the entire planet.
		Not only use of water as a consumable product, but all other uses such as wildlife habitat, irrigation, swimming, fishing, rafting, and boatingâ”any or all of which can be adversely impacted by water quality degradation.
	www.nationmaster.com /encyclopedia/Water-quality (1492 words)

	EPA \| What is water quality?
		Water quality is commonly defined by its physical, chemical, biological and aesthetic (appearance and smell) characteristics.
		Water quality often declines as rivers flow through regions where land use and water use are intense and pollution from intensive agriculture, large towns, industry and recreation areas increases.
		The presence of contaminants and the characteristics of water are used to indicate the quality of water.
	www.epa.nsw.gov.au /envirom/waterqual.htm (1193 words)

	Water quality -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-29)
		Another general perception of water quality is that of a simple property that tells whether water is (Click link for more info and facts about polluted) polluted or not.
		Most citizens harbor great concern over the purity of their (Water suitable for drinking) drinking water, but there is far more to water quality than water treatment for human consumption.
		For these people, water quality, even for drinking purposes, relates directly to the local (A natural body of running water flowing on or under the earth) stream, (A body of (usually fresh) water surrounded by land) lake, or (Click link for more info and facts about groundwater) groundwater.
	www.absoluteastronomy.com /encyclopedia/w/wa/water_quality.htm (812 words)

	Watershed, Jacks Fork River, Water Quality (Site not responding. Last check: 2007-10-29)
		Water quality at this station consistently met water quality standards for the selected parameters during the years examined with the exception of fecal coliform bacteria.
		Water quality tests performed by the Missouri State Public Health Laboratory in Springfield and Popular Bluff on 308 wells in Howell, Shannon, and Texas Counties from July 1998 to August 1999 indicate that 119 (38.6%) well samples tested were unsafe (Farmer, personal communication and Jones, personal communication).
		Since domestic water use is directly related to human population, it is estimated that domestic water use for the Jacks Fork is 21% of that of the Current River Watershed or 0.53 mgd.
	conservation.state.mo.us /fish/watershed/jcksfork/watqual/160wqtxt.htm (3823 words)

	Water Quality - A National Overview (Site not responding. Last check: 2007-10-29)
		In its National Water Quality Inventory: 1998 Report to Congress, EPA concludes that 40 percent of the nation's assessed waterways remain too polluted for fishing and swimming.
		The CWA requires states to identify all waters where required pollution controls are not sufficient to attain or maintain applicable water quality standards and rank the waters taking into account the uses of the water and severity of the pollution problem.
		The National Water Quality Inventory: 1998 Report to Congress is a biennial report to Congress prepared under Section 305(b) of the Clean Water Act.
	www.scorecard.org /env-releases/def/water_gen.html (1618 words)

	WHO \| Drinking Water Quality
		Contaminated drinking water contributes to disease in developing and developed countries worldwide.
		Water, sanitation and hygiene links to health: Facts and figures updated November 2004
		Water quality - Guidelines, standards and health: Assessment of risk and risk management for water-related infectious diseases
	www.who.int /water_sanitation_health/dwq/en (185 words)

	The Environmental Literacy Council - Water
		Less than 1 percent of the water on the earth is fresh water (the remaining two to three percent is frozen fresh water contained in glaciers and ice caps).
		Water in these areas is a valuable commodity and, in some cases, great technological feats have been undertaken to provide a reliable source of water.
		In some areas, water quality is a serious concern and waterborne diseases remain a significant source of mortality in many developing countries.
	www.enviroliteracy.org /category.php/14.html (649 words)

	Water Quality
		The measure of the pH of a body of water is very important as an indication of water quality, because of the sensitivity of aquatic organisms to the pH of their environment.
		Oxygen gas is dissolved in water by a variety of processes—diffusion between the atmosphere and water at its surface, aeration as water flows over rocks and other debris, churning of water by waves and wind, and photosynthesis of aquatic plants.
		Water samples collected from the site in capped bottles and transported back to the lab must be stored in an ice chest or refrigerator until measurements are to be made.
	fs.huntingdon.edu /biology/HTI/water.html (5714 words)

	Defra, UK - Environmental Protection - Water
		We are responsible for all aspects of water policy in England, including water supply and resources, and the regulatory systems for the water environment and the water industry.
		Audits and inspections of water companies in England and Wales, and enforcement action to ensure compliance with the Water Quality Regulations - including investigation of customer complaints and incidents which affect drinking water supplies - is dealt with by the Drinking Water Inspectorate.
		The Environment Agency is responsible for local control and maintenance of water quality, water resources and flood defence in England and Wales, whereas Defra oversees water policy and sets the framework within which the Environment Agency operates.
	www.defra.gov.uk /environment/water (766 words)

	RI Department of Environmental Management- Water Quality Index Page
		As noted in the 2004 State of the State's Waters (Section 305(b)) Report, available baseline water quality data indicate that most surface waters assessed support their designated uses; 78% of lake acres, 66% of river miles, and 69% of estuarine waters (square miles) assessed fully support all designated uses.
		Approximately 26% of the state's population depends on groundwater for their water supply and approximately two-thirds of the communities in the state depend on groundwater for all or a significant portion of their water supply needs.
		In addition, groundwater quality affects surface waters since a significant portion of stream flow (almost all of it in dry periods) is derived from groundwater flow to the stream.
	www.dem.ri.gov /programs/benviron/water/quality (549 words)

	CRC for Water Quality and Treatment - Australia's national drinking water research centre
		We focus on issues relating to water quality management and health risk reduction, from catchment and reservoir management and water treatment to the distribution of drinking water to consumers' taps.
		The CRC has issued a statement on issues relating to recycling water for drinking and the need for a risk management approach consistent with current best practice for conventional drinking water supplies.
		The CRC for Water Quality and Treatment will cease operations on 30 June 2008 at the conclusion of the Commonwealth funding period and will be succeeded by an independent research centre.
	www.waterquality.crc.org.au (308 words)

	EUROPA - Environment - Water quality in the EU - Introduction (Site not responding. Last check: 2007-10-29)
		All polluted water, whether polluted by households, industry or agriculture, returns back, one way or another, to the environment and may cause damage to human health or the environment.
		This site attempts to provide further information on the different pieces of water legislation (and related policies) in the European Community which contribute to a major part that clean water in sufficient quantity becomes a reality all over Europe.
		Update information on the development, implementation and review of water policies will be available twice a year through the WISE Newsletter, bulletin of the Water Information System for Europe (WISE).
	europa.eu.int /comm/environment/water (325 words)

	Environmental Quality Program (Site not responding. Last check: 2007-10-29)
		Protective water quality standards are important for the conservation and enhancement of fish, wildlife, and their habitats and for the continuing benefit of the American people.
		The objective of the Clean Water Act is to restore and maintain the chemical, physical, and biological integrity of the Nation's waters.
		As an example the poor quality of irrigation drainage water and discharges from collecting systems are known to cause the accumulation of toxic substances as well as reproductive and developmental problems in shorebirds, waterfowl, and fish.
	www.fws.gov /contaminants/Issues/WaterQuality.cfm (491 words)

	Water Quality (Site not responding. Last check: 2007-10-29)
		Water quality shapes the aesthetics and uses of a lake.
		Water quality is important not only to our lives, but to the animal and plant species that depend on the lake’s habitat.
		Water quality is determined by a variety of lake characteristics — not just how clear the water appears.
	www.nhlakes.org /edbrochures/waterquality.htm (967 words)

	The Georgia Conservancy - improving steam and river water quality
		Georgia Conservancy believes the State must hold Georgia's waters in trust for the long-term benefit of the present and future citizens of Georgia and the environment.
		Water Supply and Conservation - click here for articles about alternatives to reservoirs and things you can do to conserve water.
		Water Resource Planning - learn about The Georgia Water Coalition, and Georgia Conservancy's Water Policy and why we believe water should be managed as a public resource in Georgia.
	www.georgiaconservancy.org /WaterQuality/WaterQuality.asp (304 words)

	Science Junction - Water What Ifs
		Water What-ifs is a web site for encouraging inquiry investigations of water quality in North Carolina and Delaware.
		Three lessons are provided for each parameter to help teachers create a water quality unit to be used in conjunction with the water quality testing program.
		he purpose of water quality testing is to monitor specific parameters in bodies of water on the earth.
	www.ncsu.edu /sciencejunction/depot/experiments/water (270 words)

	EUROPA - Environment (Site not responding. Last check: 2007-10-29)
		They put good bathing water quality on the first line when judging their immediate living environment.
		Knowing they have clean and safe water to swim or play in is an important factor in their choice of a holiday or weekend destination.
		Already back in the 1970's, Europe decided that bathing water quality should be monitored and tested in order to protect bathers from health risks and to preserve the environment from pollution.
	europa.eu.int /water/water-bathing/index_en.html (345 words)

	Water Science: Water quality
		Water quality is a term used to describe the chemical, physical, and biological characteristics of water, usually in respect to its suitability for a particular purpose.
		When the average person asks about water quality, they probably want to know if the water is good enough to use at home, to play in, to serve in a restaurant, etc., or if the quality of our natural waters are suitable for aquatic plants and animals.
		These excess nutrients have the potential to degrade water quality if incorporated into runoff from farms into streams and lakes All this growth puts great stress on the natural water resources, and, if we are not diligent, the quality of our waters will suffer.
	ga.water.usgs.gov /edu/waterquality.html (323 words)

	DEQ: Oregon DEQ Water Quality Program
		The Department of Environmental Quality (DEQ) is the state agency responsible for protecting Oregon's surface waters and groundwater to keep these waters safe for a wide range of uses, such as drinking water, recreation, fish habitat, aquatic life, and irrigation.
		Monitoring water quality with regular sampling of more than 50 rivers and streams in the 18 designated river basins found in Oregon.
		Controlling nonpoint sources of pollution (diffuse or unconfined sources of wastes or contaminants that are conveyed to surface water or groundwater) by maintaining a plan that describes how the state intends to manage nonpoint sources.
	www.deq.state.or.us /wq (312 words)

	Water Quality (Site not responding. Last check: 2007-10-29)
		Water Quality Factors: Nutrients are essential for plants and animals, but too much can cause harmful effects.
		Restoring Bay Water: In order to restore the Chesapeake Bay watershed, Bay Program partners agreed in Chesapeake 2000 to improve water quality to provide healthier habitat for the Bay's living resources.
		These Bay grasses contribute to water quality as they function to remove excess nutrients, such as nitrogen and phosphorus, that could fuel unwanted growth of algae in the surrounding waters.
	www.chesapeakebay.net /wquality.htm (440 words)

	Index
		Water samples are collected from sites that are: 1) visited by over 50,000 people annually; and 2) adjacent to storm drains (including rivers, creeks and streams).
		They are good indicators of microbiological contamination and are used as a substitute by health authorities for disease causing organisms (such as hepatitis, dysentery, cholera, etc) that are likely to be present in sewage but are difficult to analyze for directly.
		Such water may be contaminated with bacteria, viruses, protozoa, or chemicals, and contact with storm drain water may cause illness.
	www.co.monterey.ca.us /health/beaches (381 words)

	Check your Beach Water Quality
		However, there is quarantine on mussel consumption due to risk of PSP or domoic acid poisoning for mussels taken from all coastal waters in California.
		A closure is the placement of signs at a public beach that the area is closed to swimming and or water contact due to water contamination.
		A beach closure is a consequence of a reported sewage spill that impacts, or may impact water quality at a recreational beach.
	www.earth911.org /waterquality/default.asp?cluster=1 (686 words)

	Water Quality
		High temperatures, which may result from high turbidity, from the return of industrially used water to the river (the phenomenon of thermal pollution), or from dry periods, decrease the amount of gases that can be dissolved in water.
		Water's acidity can be increased by acid rain but is kept in check by the buffer limestone.
		An extreme recorded value of 60 NTU indicates water that is relatively clear to a depth of five inches, while at the other extreme, a value of zero NTU corresponds to water with visibility to five feet, which is the maximum depth that can be measured with this turbidity test.
	www.grc.nasa.gov /WWW/K-12/fenlewis/Waterquality.html (859 words)

	Water Quality Program Home - WA Dept. of Ecology
		The goals of the water quality program are to prevent and clean up water pollution and to help communities make sustainable choices that reduce and prevent water quality problems.
		The program also aims to provide water quality partners with technical and financial assistance and to produce useful water quality information for the public and our partners.
		Fiscal Year 2007 Water Quality Grant and Loan Funding
	www.ecy.wa.gov /programs/wq/wqhome.html (139 words)

	TDEC: Water Pollution Control
		The Division of Water Pollution Control is responsible for administration of the Tennessee Water Quality Control Act of 1977 (T.C.A. In addition, the Division is responsible for the non-coal surface mining program and illegal coal mining under the Tennessee Coal Surface Mining Law of 1980, as amended.
		Under the Water Quality Control Act, municipal, industrial and other discharges of wastewater must obtain a permit from the Division.
		These permits establish pollution control and monitoring requirements based on protection of designated uses through implementation of water quality standards and other applicable state and federal rules.
	www.state.tn.us /environment/wpc (458 words)

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