Draining of agricultural land has also intensified nutrient emissions from the soil into groundwaters. As concerns the assessment of the relative share of pollution from diffuse sources, some of the non-EU countries in the region still lack experience on the use of proper evaluation methods or models, which makes the development of management scenarios difficult. The importance of pesticide use varies along the basin: in comparison with the upstream Danube countries, the level of pesticide use in the central and lower Danube countries remains relatively low.