Dryer Vents: An Overlooked Source of Pollution?

Mercury Levels Lower in Great Lakes, but Still High Although mercury concentrations have decreased about 20% in fish, fish-eating birds, and inland lake sediments across the Great Lakes region in recent decades, levels in top predator fish and wildlife are still dangerously high, and in some places concentrations in some fish and wildlife may now be increasing, according to a new report. Levels of mercury in fillets of six commonly consumed game fish species were above the U.S. EPA’s designated human health advisory level of 0.3 ppm across much of the region. The report cited controls on mercury emissions from medical and municipal waste incinerators, chloralkali facilities, and other sources as the main reason for decreases in mercury in the region.