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2.3.     EEA WISE-SoE data collection

EEA base its water quality data on a representative sub-sample of national monitoring results, which EEA member countries report voluntarily each year to the EEA. EEA has mainly collected annual values (e.g. average, median, minimum and maximum) but in some cases EEA also have collected seasonal (summer and winter) values. In the context of the implementation of the WFD the annual data flow for water quality has been transferred into  the WISE ‘State of the Environment’ (SoE) voluntary data flow (WISE-SoE). With this it remains one of the EIONET Priority Data Flows, but gains full integration into the reporting under WISE and complementarily with data collected under the WFD.

Data are transferred on an annual basis from the countries to the EEA and stored in Waterbase.  At the end of 2011, Waterbase contained water quality information on

• more than 10 000 river stations in 37 countries,
• more than 3500 lake stations in 35 countries,
• more than xx coastal stations, and
• quality data from around 1500 groundwater bodies.

Some of the water quality data are from countries not reporting on the WFD. The different Waterbase are available through the following Website http://www.eea.europa.eu//themes/water/dc.

The data reported in the WISE-WFD and the WISE-SoE databases should make it possible for comparing the water quality data with the data on ecological and chemical status and pressure information for the individual water bodies. The have been several obstacles for making this match between the two database including Member States reporting different water body identifications in the two reporting streams. Selected results on comparing the information in the two databases are presented in the chapter 7. However, these analyses will be further improved and more detailed results will be presented during the spring 2012.