STANISLAUS COUNTY, Calif. — The Riverdale Park Tract Community Service District (RPTCSD) has notified the Stanislaus County Board of Supervisors that levels of perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) in local groundwater have exceeded state notification levels, according to a letter submitted for discussion at the next board meeting.
PFOS and PFOA are man-made chemicals classified under per- and polyfluoroalkyl substances (PFASs), a group of emerging contaminants of significant concern.
These chemicals are widely used in consumer products, including non-stick cookware, waterproof fabrics, carpets, paper food packaging, and fire-retardant foam…