How can we prevent water pollution?
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The is no simple single solution to preventing water pollution.  The sources are many depending upon the location and the ground water.\n\nThe sites below have much information on preventing home, agricultural and industrial pollution of water:
1009505
make more ozone. jk the best way to prevent it is to not cut down as many trees, not use cfc's (clorofloracarbons), and cut down on major pollution, such as factories and cars like hummers
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Get a ION Pure system.........get rid of the chemicals\n\nhttp://www.usfilter.com/en/Institutional/Aquatics_and_Pools/
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The main cause of disturbances in water pH levels is non-point source pollution.  The following is quoted from the EPA's "Polluted" brochure, brochure number EPA-841-F-94-005, and explains how non-point source pollution in general effects water and the environment.\n\n*******\nPolluted Runoff:\nWhat is Nonpoint Source (NPS) Pollution?\n...\nNonpoint source (NPS) pollution, unlike pollution from industrial and sewage treatment plants, comes from many diffuse sources. NPS pollution is caused by rainfall or snowmelt moving over and through the ground. As the runoff moves, it picks up and carries away natural and human-made pollutants, finally depositing them into lakes, rivers, wetlands, coastal waters, and even our underground sources of drinking water.\n...\nStates report that nonpoint source pollution is the leading remaining cause of water quality problems. The effects of nonpoint source pollutants on specific waters vary and may not always be fully assessed. However, we know that these pollutants have harmful effects on drinking water supplies, recreation, fisheries, and wildlife.\n*******
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We'll have to move inland when the oceans rise and cover all the present port cities. New Orleans, Indonesia, you think you had it bad last time...? The next one will not be as fast moving, but it will be deeper. \n\nAnd the main thing is, there's nothing we can do to prevent it because it isn't caused by human activities.\n\nSo: there are no direct health effects, if that's what you meant, but there will be large social, economic, industrial and agricultural effects.
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Wetlands filter water that is headed to the ocean. Therefore, less pollutants in the oceans and more stink in the wetlands.
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The best way to stop erosion is to install a drainage system (if its water erosion) to give the water a planned path away and not take soil with it. Some ways you can do this are with gravel (broken up cinder blocks work well) or with PVC pipe. The biggest thing that will help with both of these is to have a plan so your drain system wont get clogged. If you get clogs you're back to having erosion
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Solutions to the water crisis—and most environmental problems—require changes in attitudes. People need to be cooperative rather than selfish, to make reasonable sacrifices where necessary, and to be determined to take care of the earth for its future inhabitants.\n\nSuch "a water ethic," of course, requires more than just a local approach. Countries as well as neighbors need to cooperate, since rivers are no respecters of national boundaries. \n\nClearly, an adequate supply of good water—although vital—is not all that is needed if we are to enjoy a healthy and happy life. Humans must first recognize an obligation to the One who provided both water and life itself.
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Its not.  What you see on top of water is hydrocarbon polution.  most really deadly polutants such as hexa valent chromium deposit in the river bed or lake floor and continue to contaminate the water for several years.
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Stay out of the sun and chlorinated water. That's the only real way.
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It depends on your source of water.  Rainwater, wastewater, pond water, and well water all go through different steps.\n\nThe things that need addressed in one manner or another are particulates (usually cleaned out by a filter in the beginning stages of the process), bacteria and larger life forms (also many of which can be be filtered out with finer filters), and chemicals (usually removed by reverse osmosis or by charcoal or some other cleansing chemical process).\n\nThere are a lot of sources out there.  I have listed a few of them below.  Good luck.
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Among the most dangerous of all water pollutants is fuel oil. Oil spills from tankers at sea or leaks from underground storage tanks on land are very difficult to control as oil tends to spread very fast, affecting a large area in a very short time. They are a major menace to the environment as they cause severe damage to surrounding ecosystems.
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Education! People have to learn more about pollution and what effects their actions (dumping, buying goods with a lot of packaging etc.) have on the environment. Only then people can act responsibly, reduce waste and recycle and reuse as much as possible.
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U Replace shower heads and faucet aerators with water efficient models.\nU Use a water-filled milk jug or plastic bottle in your toilet tank to displace water; this allows your toilet\nto operate using less water.\nU Choose nonphosphate or low phosphate detergents. High phosphate levels in lakes and streams\ncan kill fish and other wildlife.\nU Use a broom instead of water to clean your driveway or garage . Do not sweep debris into the\nstreet or storm sewer.\nU Put a spray nozzle on the end of your hose for car washing and plant watering to prevent the hose\nfrom continually releasing water and to control the amount of water used.\nU Use native plants in your garden that require less water.\nU Use cat litter or sand instead of salt on icy walks. Salt pollutes water and kills plants.\n\nU Do not let the water run while brushing your teeth or washing your face (you can save up to 5\ngallons).\nU Do not leave the water running if you wash dishes by hand.\nU Rinse all your dishes at once by using a dishrack placed in the sink.\nU Only run your dishwasher and washing machine when they are full.\n\nU Do not open fire hydrants on hot summer days because water needed to fight a fire will not be\navailable in an emergency. Also, opening fire hydrants is illegal.\nU Do not throw in the trash, pour down the drain, or dump on the ground paint, antifreeze, motor oil,\nand other household hazardous wastes, because they can migrate to your water source.\nU Dispose of tissues, dead insects, and other waste in a trash can rather than a toilet.\nU Plant native plants instead of traditional lawn grass to avoid the use of herbicides, pesticides,\nfertilizers.\nU Do not dump used motor oil on the ground or into sewers; throwing motor oil in the trash is illegal.\nRecycling centers and many service stations accept used motor oil for recycling.\nImproving Your Housekeeping\nU Fix leaks by replacing faucet washers and toilet flappers as needed. A slow drip or leak can easily\nwaste more than 100 gallons of water a week, which leads to an unnecessarily high water bill.\nU Put all litter in trash cans so it does not get washed into the storm sewers.\nU Clean up waste products while walking your pets.\nEducating Yourself and Others\nU Educate your community about the effects of dumping waste, such as pesticides, down drains and\ninto waterways.\nU Encourage your neighbors, family, and friends to install low flow water fixtures and to practice\nwater conservation.\n\n\nMaybe you can not stop but it is easy to help decrease pollution.
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Reduce pollutions is the answer, but a certain political party, and their lobbyist will fight you all the way. So I say there is no answer.
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No, the water are too polluted.
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try a sequestering agent like Super Sequa-Sol, it is in no way toxic and can be added while people are in the water.