EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (http://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
Level of classification is based on the 20 % 40 %, 60 % and 80 % percentiles of the nitrate+nitrite distribution at coastal stations. The map is only available as a low resolution picture. Geographical coverage note: the Mediterranean Sea