The Water Framework Directive was adopted on On 23 October 2000. The environmental objectives are the core of the Directive and the definition of “good ecological status” is essential. The intecalibration process is comparing the national classifications and Decision 2005/646/EC sets out a network of intercalibration sites.
The implementation of the Water Framework Directive raises a number of shared technical challenges for the Member States, the Commission, the Candidate and EEA Countries as well as stakeholders and NGOs.
"Directive 2000/60/EC of the European Parliament and of the Council establishing a framework for the Community action in the field of water policy
Groundwater Directive (2006/118/EC)