According to a U.S. Geological Survey study, a black sealant sprayed on parking lots, driveways and playgrounds turns out to be the largest contributor to the rise of a toxic pollutant in urban lakes and reservoirs across America.
Scientists tested for polycyclic aromatic hydrocarbons (PAHs), a probable human carcinogen and toxin to fish, throughout urban areas. High PAH levels were found in the Upper Mystic Lake at 79 ppm.
MyRWA's Patrick Herron, Water Quality Monitoring Director, comments on pollution in the Mystic Lakes.
View the Arlington Advocate article here.