After final public water systems ruling, arsenic levels decline for most highly exposed US communities

Reductions in arsenic exposure among the U.S. population were reported for users of public water systems in the South and West, and among Mexican American participants, according to a new study by Columbia University Mailman School of Public Health. Differences in change over time were reported by educational attainment in addition to by region, race/ethnicity, and public water arsenic level. The full findings are published in the journal Environmental Pollution.