Waterframework Directive and Eutrophication

Although the Water Framework Directive does not use the term eutrophication, it does implicitly require Member States to assess the eutrophic condition of all inland and coastal surface waters.
This is because the WFD requires Member States to classify their surface water bodies according to its ecological status. The ecological quality status of a water body can be classified as: high, good, moderate, poor or bad. Member States should aim to restore the ecological quality status of all surface waters should be restored to good unless doing so would be unfeasible or disproportionately expensive.