Science, Space and Technology News 2024
A study by Johns Hopkins Bloomberg School of Public Health shows that 68% of young children in Chicago are exposed to lead in tap water. Analyzing data from 38,385 water tests and using machine learning, researchers found widespread lead contamination, with significant racial disparities in exposure and testing. Chicago, having the nation’s largest number of lead pipes, faces a significant public health challenge in addressing this issue.
The EPA has proposed that U.S. cities replace all lead water service lines within 10 years. Under the proposal, Chicago would get 40 years to comply, given the disproportionate burden its water infrastructure poses.“The extent of lead contamination of tap water in Chicago is disheartening—it’s not something we should be seeing in 2024,” says study lead author Benjamin Huynh, PhD, an assistant professor in the Bloomberg School’s Department of Environmental Health and Engineering.
The researchers then combined these data with U.S. Census and other official data on block-by-block demographics and used machine learning techniques to extrapolate—from the partial coverage of the tap water test results—the likely block-by-block risk of having lead-contaminated water.
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