Maine warns of contaminated fish in midcoast stream

BANGOR DAILY NEWS • June 18, 2026

Chemical contamination has made it into two more Maine waterways in concentrations great enough to pose danger to people eating the fish they catch. Testing in Sandy Stream in Freedom, Knox and Unity, and in the Sebasticook River in Winslow, found elevated levels of the toxic chemical perfluorooctane sulfonic acid (PFOS) in fish tissue samples, according to the Maine Center for Disease Control & Prevention. PFOS is one of the many types of perfluoroalkyl and polyfluoroalkyl substances (PFAS).