By Michael Hawthorne, Chicago Tribune
Chicago study finds high levels of toxic metal in areas of street work or plumbing repairs
Dangerous levels of lead are turning up in Chicago homes where pipes made of the toxic metal were disturbed by street work or plumbing repairs, according to a new federal study that suggests the city’s aggressive efforts to modernize its water system could inadvertently pose health risks.
The problem starts with lead service lines that Chicago installed across the city until the mid-1980s to connect water mains with homes. Researchers at the U.S. Environmental Protection Agency found that spikes of lead can leach into tap water when those pipes are altered by water main replacements, meter installations or street work.
High levels can be found in tap water for years afterward, the EPA study found, raising concerns that other cities with lead pipes could face similar problems.
Most homeowners likely are unaware they could be drinking tainted water. Under federal rules, utilities rarely are required to warn residents that work is being done or tell them they can take steps to reduce their exposure to lead. A potent neurotoxin, lead can damage the brains of young children, lower IQ and trigger learning disabilities, aggression and criminal behavior later in life.
Lead is so hazardous that the EPA and the Centers for Disease Control and Prevention say there is no safe level of exposure. The metal has been phased out of gasoline, removed from paint and banned in children’s toys. But the widespread use of lead pipes during the last century has left a festering problem nationwide.
“We owe it to people to tell them that their water might not be safe to drink,” said Marc Edwards, a professor of civil and environmental engineering at Virginia Tech University who wasn’t involved with the EPA study but has reached similar conclusions in his own research. Read More
- EPA Study Finds Lead In Chicago Drinking Water Due To Repairs (wateronline.com)
- 7 Gnarly Chemicals Found in Your Drinking Water (organicauthority.com)