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Water Pollution News- California's Unsafe Tap Water

Learning Center Categories: Water And Health Learn About Water Quality Water Can Heal! Contaminants Fact Sheets Top Water News       Facts On Reverse Osmosis Water Filters: Reverse osmosis is the finest water filtration method known. This process will allow the removal of particles as small as ions from a solution. Reverse osmosis is used to purify water and remove salts and other impurities in order to improve the color, taste or properties of the fluid. Reverse osmosis uses a membrane that is semi-permeable, allowing the fluid that is being purified to pass through it,while rejecting other ions and contaminants from passing. Most reverse osmosis technology uses a process known as crossflow to allow the r.o. membrane to continually clean itself. The process of reverse osmosis requires a driving force to push the fluid through the membrane, and the most common force is household water pressure or pressure from a pump. The higher the pressure, the larger the driving force. The most common use for reverse osmosis is in purifying high quality drinking water. It is used to produce water that meets the most demanding filtration specifications that are currently in place.

Water And Health   Learn About Water Quality     Water Can Heal!   Contaminants Fact Sheets   Top Water News Bottled water tested with contaminants Unsafe tap water for Californians Studies find 40 chemicals & 20 pesticides in water— Yet officials claim no health threat! Filters best way to clean tap water Novel Forward Osmosis Desalination Water sources of Dasani-pure? Question the safety of bottled water Unsafe water vending machines? Turn humidity into drinking water Perchlorate pollution for 20 million people Perchlorate and its health risks Water shortages:poor management of water resources & soaring water usage Dying for a drink of clean water New WHO report tackles fluoride Pollution from Sewage Spills Lead in school's drinking fountains Latest Chromium pollution Lettuce contaminated with Perchlorate Intersex fish signal presence of pollutants Cooking tips to avoid Bacteria infection Tap Water Poses Risks, Study Says The report on 19 California cities, including L.A., urges more treatment. Los Angeles Times, (Wednesday) The water that residents of California's largest cities get from their taps might meet most government safety standards, but it still poses some health risks and needs to be treated more thoroughly, according to a study scheduled to be released today by an environmental organization. The report by the Natural Resources Defense Council, titled "What's on Tap," concluded that antiquated waterworks and pollution are combining to affect the quality of drinking water residents receive in many cities, including Los Angeles and San Francisco. Though many urban residents can drink tap water without serious threats to their health, the study concluded that some contaminants still pose a risk, especially to infants, pregnant women, and people with AIDS or other immune system deficiencies. In Fresno, the study found, the risk may be substantial. The study concluded that pollution from farm and industrial sources was a health concern, particularly for children and pregnant women. Fresno water showed "repeated problems" with nitrates, pesticides and industrial chemicals. The findings were the result of a national review of tap water data from 19 cities, but the group is only releasing the California results now -- a decision, it says, that is tied to the timing of Proposition 50, a ballot measure that would authorize funds to improve water treatment. Voters next Tuesday will decide the measure's fate. "There are still significant risks from contaminants," said Natural Resources Defense Council senior attorney Erik Olson, one of the study's authors. "The other issue is that because of deteriorating infrastructure, and the need to improve pipes underground, things are likely to get worse unless significant improvements are made. "It's like someone that hasn't brushed their teeth in years," he added, laughing. "It may be hidden for a while, but eventually it's going to catch up with you." Los Angeles received generally fair marks in the report, though it cited noteworthy amounts of arsenic and byproducts of disinfectants in the water supply, among other chemicals. The amounts were all within federal standards. The city received good marks for its annual "right to know" tap water reports to the public. San Diego got a similar grade, though the study noted that in some areas the chemical perchlorate was present in levels higher than a new state standard for government action. And San Francisco received a more critical assessment, which noted that city water does not meet a new standard for byproducts of disinfection known as trihalomethanes that have been linked to cancer. The city has obtained an extension to meet the standards.

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