Division Selection of quality elements

In order to assess the magnitude of the pressure to which bodies of surface water are subject Member States shall monitor for those quality elements which are indicative of the pressures to which the body or bodies are subject. In order to assess the impact of these pressures, Member States shall monitor as relevant:

• parameters indicative of the biological quality element, or elements, most sensitive to the pressures to which the water bodies are subject,

• all priority substances discharged, and other pollutants discharged in significant quantities,

• parameters indicative of the hydromorphological quality element most sensitive to the pressure identified.