The Water Quality Priority Area (PA4) has four major objectives to follow during its work. First, PA4 makes important steps to achieve the management objectives set out in the Danube River Basin Management Plan. Second, PA4 aims to reduce the nutrient levels in the Danube River to allow the recovery of the Black Sea ecosystems to conditions similar to 1960s. Third, PA4 elaborates a Danube Delta Analysis Report as a step towards completion of the Delta management Plan. And fourth Secure viable populations of Danube sturgeon species.