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The problem goes beyond schools that use wells. Schools that draw water from public utilities showed contamination, too, especially older buildings where lead can concentrate at higher levels than in most homes. In schools with lead-soldered pipes, the metal sometimes flakes off into drinking water. Lead levels can also build up as water sits stagnant over weekends and holidays. Schools that get water from local utilities are not required to test for toxins because the EPA already regulates water providers. That means there is no way to ensure detection of contaminants caused by schools' own plumbing. But voluntary tests in Washington, Baltimore, Philadelphia, Seattle and Los Angeles have found dangerous levels of lead in recent years. And experts warn the real risk to schoolchildren is going unreported. "I really suspect the level of exposure to lead and other metals at schools is underestimated," said Michael Schock, a corrosion expert with the EPA in Cincinnati. "You just don't know what is going on in the places you don't sample." Since 2004, the agency has been asking states to increase lead monitoring. As of 2006, a survey by the Centers for Disease Control and Prevention found nearly half of all schools nationwide do not test their water for lead. Because contaminant levels in water can vary from drinking fountain to drinking fountain, and different children drink different amounts of water, epidemiologists often have trouble measuring the potential threats to children's health. But children have suffered health problems attributed to school water: - In 2001, 28 children at a Worthington, Minn., elementary school experienced severe stomach aches and nausea after drinking water tainted with lead and copper, the result of a poorly installed treatment system. - In Seattle several years ago, a 6-year-old girl suffered stomach aches and became disoriented and easily exhausted. The girl's mother asked her daughter's school to test its water, and also tested a strand of her daughter's hair. Tests showed high levels of copper and lead, which figured into state health officials' decision to phase-in rules requiring schools to test their water for both contaminants. Many school officials say buying bottled water is less expensive than fixing old pipes. Baltimore, for instance, has spent more than $2.5 million on bottled water over the last six years. After wrestling with unsafe levels of arsenic for almost two years, administrators in Sterling, Ohio, southeast of Cincinnati, finally bought water coolers for elementary school students last fall. Now they plan to move students to a new building. In California, the Department of Public Health has given out more than $4 million in recent years to help districts overhaul their water systems. But school administrators in the farmworker town of Cutler cannot fix chronic water problems at Lovell High School because funding is frozen due to the state's budget crisis. Signs posted above the kitchen sink warn students not to drink from the tap because the water is tainted with nitrates, a potential carcinogen, and DBCP, a pesticide scientists say may cause male sterility. As gym class ended one morning, thirsty basketball players crowded around a five-gallon cooler, the only safe place to get a drink on campus. "The teachers always remind us to go to the classroom and get a cup of water from the cooler," said sophomore Israel Aguila. "But the bathroom sinks still work, so sometimes you kind of forget you can't drink out of them."
[Associated
Press;
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