Most of the discharges into Lake Peipsi/ Chudskoe arc insufficiently treated. Other pressure factors — unauthorized dumping, discharge of untreated mine waters from oil shale mines and deforestation (also in protection zones of water resources) — contribute moderately and locally to the nutrient loading. Of similar impact is unorganized recreation on the banks, leading to detritus getting into the watercourses (see the assessment of the Ramsar Sites). According to the Estonian classification, it is moderate.