Illinois PIRG today released
Risky Fishing: Power Plant Mercury Pollution and Illinois Sport Fish. According to the report, the average mercury concentration in Illinois sport fish samples was 20% above the federal U.S. Environmental Protection Agency (EPA) safe limit for women of average weight who eat fish twice per week.
“This is the first time a comprehensive analysis of all of the federal and state fish samples has ever been made available to the public,” said Max Muller, the report’s author and environmental advocate at Illinois Public Interest Research Group (PIRG). “Our findings show that mercury contamination is everywhere in Illinois and highlight the need to reduce mercury emissions as much as possible and as soon as possible”
Key findings of this report include:
• The mean mercury concentration in Illinois fish samples was 0.16 parts per million (ppm), about 20 percent higher than U.S. EPA’s 0.13 ppm safe limit for women of average weight who eat fish twice per week.
• Thirty-nine (39) percent of the fish samples exceeded the 0.13 ppm safe mercury limit for women of average weight who eat fish twice per week.
• A largemouth bass caught in Sherman Park Lagoon in South Chicago had the highest mercury concentration of fish in either of the two studies at 1.40 ppm. For references, that is 0.40 ppm above the legal limit for fish sold in the United States. The second highest mercury concentration, at 1.07 ppm was found in a largemouth Bass in Kinkaid Lake, in Jackson County, and the third highest, at 0.94 ppm, was found in a largemouth bass in Cedar Lake, also in Jackson County.
• Fifty-nine (59) percent of the fish samples exceeded the safe mercury limit for children of average weight under age three who eat fish twice a week; 50 percent of fish samples exceeded the safe limit for children ages three to five years; and 34 percent of samples exceeded the safe limit for children ages six to eight years.
• In nearly half (36) of the 77 counties included in the studies, the average fish sample mercury concentration exceeded U.S. EPA’s safe limit for women. These counties are geographically distributed throughout the state. In 8 counties (Boone, DeKalb, Edwards, Effingham, Kane, Pope, Pulaski, and Schuyler), 100% of fish samples were contaminated above the safe limit.
• In half (16) of 32 species included in the studies, the average fish sample mercury concentration exceeded U.S. EPA’s safe limit for women. These species were, in descending order of average mercury concentration, bigmouth buffalo, freshwater drum, striped bass, lake trout, spotted bass, sauger, smallmouth buffalo, spotted sucker, flathead catfish, largemouth bass, brown trout, Chinook salmon, white bass, channel catfish, carp, and white sucker.
• In 66 of the 145 lakes and streams included in the studies, the average fish sample mercury concentrations exceeded U.S. EPA’s safe limit for women. The ten lakes with highest average fish sample mercury concentrations were, in descending order: Lusk Creek in Pope County, Monee Reservoir in Will County, Devil's Kitchen Lake in Williamson County, an unnamed lake in Tazewell County, Piscasaw Creek in Boon County, McKinley Park Lagoon in Cook County, Steven A. Forbes Lake in Marion County, Big Muddy Creek in Clay County, Kinkaid Lake in Jackson County, and Cedar Lake in Jackson County.