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Title

Measuring Mercury Trends in Freshwater Fish in Washington State: 2006 Sampling Results

 
Publication number Date Published
07-03-043September 2007
VIEW NOW: Acrobat PDF format (Number of pages: 72) (Publication Size: 421KB)




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Author(s) Furl, C.
Description Mercury concentrations were measured in 85 individual fish and 30 composite fish samples as part of the second year of long-term monitoring of mercury in fish tissues across the state. Previous Ecology studies identified elevated mercury levels leading to fish consumption advisories.

A total of 17% of individuals and 3% of composites sampled exceeded the EPA recommended water quality criterion of 300 ppb. Largemouth bass and northern pikeminnow were the only species exceeding EPA criterion. A single nine-year-old female bass from Mason Lake contained a mercury concentration of 952 ppb. This was the only sample exceeding the National Toxics Rule (NTR) criterion of 825 ppb.
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Contact Joan LeTourneau at 360-407-6764 or jlet461@ecy.wa.gov
Keywords Environmental Protection Agency, fish, lake, mercury, toxic, water, WRIA 41, WRIA 57, lakes, freshwater
WATERSHED Water Resource Inventory Areas
(WRIA 08,WRIA 09,WRIA 13,WRIA 14,WRIA 38,WRIA 41,WRIA 57)
DATA Environmental Information Management (EIM) #HgFish06

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