Filters, Coupled with Digital Health Program, Reduced Arsenic Levels by Nearly Half in Study Participants in Households Relying on Well Water in American Indian Communities

A community-led water-testing project made up of households that rely on private well water with high arsenic levels saw on average a 47 percent drop in participants’ urinary arsenic levels after filters were installed and a digital health program was implemented, according to a new study led by researchers at the Johns Hopkins Bloomberg School of Public Health. Over the two-year study period, participating households received phone calls to encourage use of the filter and a reminder to replace the filter cartridge.