The identification of priority chemicals is a challenge for regulators, managers and researchers all around the world. This report compiles in a single list more than 2700 substances (or groups of substances) coming from main lists of chemicals compiled by relevant global conventions, European legislation, European regional seas and dedicated research work. Although not all of these contaminants are of concern for the marine environment or for a particular MSFD region/sub-region/Member State, this general overview should help understand the different options and support further developments for the monitoring and assessment of chemical pollution in European marine waters. Discussion and collaboration between the different stakeholders and expert groups will be necessary for an efficient way towards an equally high level of protection for healthy and productive oceans.
This compilation also assist in using a harmonized nomenclature for the unambiguous identification of the substances of concern. It may also serve as a basis for discussions about procedures for grouping/combining substances at European level. This is expected to facilitate consistency in the upcoming 2018 MSFD data reporting.