Maine struggling to get homeowners to test and treat private wells for arsenic

MAINE MONITOR • August 17, 2026

Just 53 percent of Mainers on private well water had tested for arsenic as of 2023, the latest figures available. The number has not moved much since 2014, when around 48 percent of Mainers on well water reported having tested it for arsenic, and is far short of the goal set by the Maine Center for Disease Control and Prevention to have tested 65 percent of wells by 2020. Low-income households making below $25,000 were least likely to have had their wells tested, according to the data collected by the Maine CDC.