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Study shows brass devices in plumbing systems can create serious lead-in-water problems
Date:11/11/2010

ute lead toxicity established by the Consumer Product Safety Commission," he said. "Thankfully, UNC's procedures caught the problem before anyone could be exposed to the high lead in water, but in most other cases the issue would go undetected. The fact that some defective products, listed as safe, could be installed in schools and day care centers and harm children is very troubling"

Chapel Hill's Elfland noted that high lead in water was first identified as a problem during the days of the Roman Empire, and that lead solder and lead pipes have been outlawed for decades.

"People have a right to expect that drinking water in brand new buildings will not be contaminated by lead, and building owners should not have to go the effort and expense UNC does to ensure that expectation is met," she said "In my opinion, this is a major regulatory failure."

The Chapel Hill-Virginia Tech team's research demonstrated that the higher cost of devices that are truly "lead free" would end up saving money. Chapel Hill's standard pre-occupancy flushing protocol adds $49 to $91, or between 24 percent to 45 percent, to the cost of every fixture, Elfland said. The total cost of finding and replacing the problematic valves in the plumbing system was $30,000, if the salaries of all the people who worked on the problem were included. The valves originally cost less than $20 each.

Earlier this fall, a U.S. Senate bill to lower the allowable amount of lead in brass plumbing devices from 8 percent to a weighted average of 0.25 percent was introduced by Sen. Barbara Boxer (D-Calif,), chairwoman of the Senate Environment and Public Works Committee. "The bottom line is that there is no safe level of lead a toxic heavy metal in our drinking water," Boxer said in a news release at the bill's introduction.


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Contact: Steven Mackay
smackay@vt.edu
540-231-4787
Virginia Tech
Source:Eurekalert  

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