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Per- and Polyfluoroalkyl Substances in Freshwater Fish, 2018: Lake Meridian, Lake Sammamish, and Lake Washington

Publication number Date Published
22-03-007March 2022
VIEW NOW Per- and Polyfluoroalkyl Substances in Freshwater Fish, 2018: Lake Meridian, Lake Sammamish, and Lake Washington (Number of pages: 41) (Publication Size: 1187KB)

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Author(s) Mathieu, C.
Description In 2018, the Department of Ecology conducted follow-up sampling of freshwater fish from three urban lakes to gain a fuller understanding of per- and polyfluoroalkyl substances (PFAS) in urban fish. Ecology collected a total of 328 fish from Lake Meridian, Lake Sammamish, and Lake Washington and composited individual fillets into 76 samples for analysis of PFAS.

All of the study’s samples contained perfluorooctane sulfonate (PFOS). Species-specific concentrations of PFOS were similar across all sites in the three lakes. Largemouth bass contained the highest PFOS concentrations, followed by yellow perch, and then brown bullhead, with medians of 30.7, 19.8, and 2.1 ng/g ww, respectively. Long-chain perfluoroalkyl carboxylates were detected in all or almost all of the samples, at much lower concentrations (medians < 2 ng/g ww). Perfluorooctanoate (PFOA) and short-chain perfluoroalkyl acids were not detected in any of the samples for this study.
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Keywords PFAS, Lake Washington, per-and polyfluoroalkyl substances, perfluorooctane sulfonate, Lake Meridian, toxics monitoring, lakes, fish, PBTs, PFOS, Lake Sammamish
WATERSHED Water Resource Inventory Areas
(WRIA 08,WRIA 09)
DATA Environmental Information Management (EIM) #CAME004


Quality Assurance Project Plan Addendum: Statewide Survey of Per- and Poly-fluoroalkyl Substances in Washington State Rivers and Lakes