Random out of the copper market, 12 Plastic water meters , or to purchase after 24 soaking water, 9-meter-hour water soaking, the highest health standards more than 10 times more than a large number of human tolerance of high levels of lead. If the health and safety standards for drinking water supply equipment, lines, and only one meter increments to meet the requirements of the leadership of immersion in water. By the Beijing Municipal Health Association called for the protection investigation was water meter launched brass water meters should be wading product may be combined as soon as possible can reduce the health and safety inspections, water meters led to dissolution of copper on human health risks. Copper-meter health and safety risks In July 2008 and August respectively, for the Plastic water meters protection of Beijing, Wuhan, Chongqing, Ningbo, Lianyungang City in five cities, health, random purchased five producers of 12 a real water market, from the U.S. Centers for Disease Control and Prevention Center, Beijing Association commissioned the environmental health and safety products for household water meter lead leaching copper complex, test water quality. Inspection of drinking water test a "drinking water supply equipment and protective materials, health and safety assessment standards" and the "standard of living," disease control and environmental, health and Plastic water meters products Security Center has. In a drinking water health practice "standards, restrictions on lead in drinking water is less than or equal to 10 micrograms. With regard to examinations, 8 hours after flooding, more than half of the water soaked up more than 10 per liter of lead content, in every l 61.1 micrograms, the maximum value of 0.5 mg per liter, the lowest level. In accordance with "drinking water supply equipment and protective materials, health and safety assessment in accordance with standards," 24 after the dissolution of lead in water and soak 1 hour increase in the number value of the immersion test should not be more than 1 microgram per liter. In this experiment, 90% of the water has been running an increasing number of resolutions higher than a ceiling of nearly 100 times. It is understood that the water was kept at the baby, the infant tolerated dose of lead and tap water daily intake is calculated in accordance with the health of lead in tap water restrictions. Although experts believe that the dissolution of running actual use on human health, the need for further experiments and demonstration projects of the risk, but it is after all the risk from loans, resulting in tap water, especially in children than adults, and lead to metabolic lead to more The health risks can be.
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