Karen D Bradham 1, Clay M Nelson 2, Tyler D Sowers 3, Darren A Lytle 4, Jennifer Tully 4, Michael R Schock 4, Kevin Li 5, Matthew D Blackmon 3, Kasey Kovalcik 3, David Cox 6, Gary Dewalt 6, Warren Friedman 7, Eugene A Pinzer 7, Peter J Ashley 7
\nAffiliations expand
\nPMID: 35986209 DOI: 10.1038\/s41370-022-00461-6<\/p>\n
Background:\u00a0<\/strong>Exposure to lead (Pb), arsenic (As) and copper (Cu) may cause significant health issues including harmful neurological effects, cancer or organ damage. Determination of human exposure-relevant concentrations of these metal(loids) in drinking water, therefore, is critical.<\/p>\n Objective:\u00a0<\/strong>We sought to characterize exposure-relevant Pb, As, and Cu concentrations in drinking water collected from homes participating in the American Healthy Homes Survey II, a national survey that monitors the prevalence of Pb and related hazards in United States homes.<\/p>\n Methods:\u00a0<\/strong>Drinking water samples were collected from a national survey of 678 U.S. homes where children may live using an exposure-based composite sampling protocol. Relationships between metal(loid) concentration, water source and house age were evaluated.<\/p>\n Results:\u00a0<\/strong>18 of 678 (2.6%) of samples analyzed exceeded 5 \u00b5g Pb L\u2013<\/sup>1<\/sup>\u00a0(Mean = 1.0 \u00b5g L\u2013<\/sup>1<\/sup>). 1.5% of samples exceeded 10 \u00b5g As L\u2013<\/sup>1<\/sup>\u00a0(Mean = 1.7 \u00b5g L\u2013<\/sup>1<\/sup>) and 1,300 \u00b5g Cu L\u2013<\/sup>1<\/sup>\u00a0(Mean = 125 \u00b5g L\u2013<\/sup>1<\/sup>). Private well samples were more likely to exceed metal(loid) concentration thresholds than public water samples. Pb concentrations were correlated with Cu and Zn, indicative of brass as a common Pb source is samples analyzed.<\/p>\n Significance:\u00a0<\/strong>Results represent the largest national-scale effort to date to inform exposure risks to Pb, As, and Cu in drinking water in U.S. homes using an exposure-based composite sampling approach.<\/p>\n Impact statement:\u00a0<\/strong>To date, there are no national-level estimates of Pb, As and Cu in US drinking water collected from household taps using an exposure-based sampling protocol. Therefore, assessing public health impacts from metal(loids) in drinking water remains challenging. Results presented in this study represent the largest effort to date to test for exposure-relevant concentrations of Pb, As and Cu in US household drinking water, providing a critical step toward improved understanding of metal(loid) exposure risk.<\/p>\n<\/div>\n Keywords:\u00a0<\/strong>Arsenic; Copper; Drinking water; Human exposure.; Lead.<\/p>\n The post A national survey of lead and other metal(loids) in residential drinking water in the United States<\/a> appeared first on Facts About Water<\/a>.<\/p>\n Source: Water Feed<\/p>\n","protected":false},"excerpt":{"rendered":" The post A national survey of lead and other metal(loids) in residential drinking water in the United States appeared first on Facts About 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