The Curonian Lagoon and the Baltic Sea did not have a “good chemical status” last year, according to a report published by Lithuania's Environmental Protection Agency (AAD).
The concentration of pollutants did not exceed environmental quality norms in the water, but it did in bottom sediments and living organisms.
“Summarising the results of analyses of pollutants in 2019, the Baltic Sea failed to meet good chemical status due to the concentrations of mercury in living organisms, and the Curonian Lagoon, due to the concentrations of heavy metals and petroleum hydrocarbons in bottom sediments,” the report said.
The concentration of six out of 60 substances analysed exceeded the set environmental quality standards: mercury in living organisms, and petroleum hydrocarbons, nickel, cadmium, copper and zinc in bottom sediments, the agency said.
In the Baltic Sea, the average mercury concentration in cod, flounder, herring and mussels exceeded the norms by up to 1.2–2 times and by up to three times in individual cod samples.