Good news: “Atmospheric [mercury] deposition from domestic power plants decreased by 91% across the contiguous U.S. from 6.4 Mg in 2010 to 0.55 Mg in 2020.”
Bad news: “Despite large deposition declines, an end-member scenario for remaining exposures from the largest active power plants for individuals consuming self-caught fish suggests they could still exceed the U.S. Environmental Protection Agency reference dose for methylmercury.”
We know mercury is a problem in the Alapaha River, coming through the air from coal Plant Scherer, north of Macon, Georgia. So by this paper the problem is lessened, but still is a problem.
It’s also a problem on land, for example near the Okefenokee Swamp, where the proposed strip mine may stir up mercury, as mentioned in the Clinch County resolution against that mine and for the Swamp.
You can still help stop that mine.