This book details the experiences gained by the Catalan Water Agency (ACA) in a Mediterranean watershed - the Catalan River Basin District - following the launch of the EU Water Framework Directive (WFD) in the year 2000. Groundwater and coastal water experts present 13 chapters defining tools for water-status assessment specially adapted to Mediterranean conditions. The content of this and the companion volume Experiences from Surface Water Quality Monitoring: The EU Water Framework Directive Implementation in the Catalan River Basin District (Part I) are the result of an excellent collaboration between the ACA and several Catalan universities and research centers to cope with new challenges provided by the WFD monitoring requirements. The volume serves as a useful guide for environmental managers and scientists engaged in other European as well as Non-European river basins.

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Specific viruses present in polluted groundwater are indicative of the source of nitrates and fecal contamination in agricultural areas.- Trend assessment for groundwater pollutants: a brief review and some remarks.- Occurrence of Polar Organic Pollutants in Groundwater Bodies of Catalonia.- GIS-based software platform for managing hydrogeochemical data.- Groundwater vulnerability mapping assessment using overlay and DRASTIC method in Catalonia.- Pros and cons of biological quality element phytoplankton as a water quality indicator in the NW Mediterranean Sea.- Bioindicators, monitoring, and management using Mediterranean seagrasses: what have we learned from the implementation of the EU Water Framework Directive?- Environmental quality of Catalan coastal waters based on macroalgae: The interannual variability of CARLIT index and its ability to detect changes in anthropogenic pressures over time.- Using MEDOCC (MEDiterranean OCCidental) index to evaluate the Ecological Status of Catalan coastal waters (Northwestern Mediterranean Sea) over time and depths.- Assessing the environmental quality in heavily modified transitional waters: the application of MEDOCC (MEDiterranean OCCidental) index in Ebre Delta bays.- First report on the distribution and impact of marine alien species in coastal benthic assemblages along the Catalan coast.- Evolution of chemical pollution in Catalan coastal sediments.- Monitoring Programmes for Bathing Waters within the frame of EU Bathing Water Directive: The experience of Catalonia.