Substance and pollutant

According to the Directive 91/676/EEC of 12 December 1991 called "nitrates", it means an area designated as vulnerable especially considering the characteristics of land and water as well as all available data on the nitrate concentration in water. Areas that feed waters are defined as: either affected by pollution (groundwater and surface freshwaters, especially those used for the abstraction of water intended for human consumption, whose nitrate concentration exceeds 50 milligrams per litre, and estuarine, coastal and marine waters and surface freshwaters which have undergone

Control, as part of the water status monitoring programme, designed to look for the pressure which causes an observed degradation. It is carried out when the reasons for any significant alteration of the environment are unknown, to determine the causes for a water body not meeting the environmental objectives (when operational control has not yet been established), or for monitoring