Monitoring of environmental contaminants in freshwater ecosystems

This report consists of two parts, where part I reports the main findings of the annual monitoring program focusing on emerging contaminants in the pelagic food web of Lake Mjøsa. Part II of the report presents concentrations of EU priority contaminants in fish from 13 Norwegian lakes. cVMS D5, Hg, and BDE-47 tend to show trophic biomagnification in Lake Mjøsa, and Long-chained PFASs are dominating the PFAS pattern in fish liver. 

The levels of PBDEs, mercury and octylphenol exceed the Environmental Quality Standards (EQS) limits in the EU Water Framework Directive's (WFD) in all 13 lakes and PCBs exceeded EQS in 12 of 13 lakes.