The programme “Contaminants in coastal waters of Norway” (Miljøgifter i norske kystområder - MILKYS) examines the levels, trends and effects of contaminants along the coast of Norway from the Oslofjord and Hvaler region in the southeast to the Varangerfjord in the northeast. The programme provides a basis for assessing the state of the environment for the coastal waters.
The main conclusion is that most trends of contaminant concentrations in marine organisms collected at stations in the Norwegian coastal water were downwards. The Inner Oslofjord is an area where more contaminants have relatively higher concentrations and hence this area warrants special concern. Furthermore, in this area the investigation found an upward long-term trend for mercury (Hg) in cod (Gadus morhua) fillet and medium chain chlorinated paraffins (MCCP) in cod liver. No short-term trend for Hg in cod fillet was detected in the Oslofjord. No long-term or short-term trend was found when concentrations in cod frm the inner Oslofjord were adjusted for fish length.