Lean Lake (Ireland)

Lough Leane is approximately 19 square kilometres (4,700 acres) in size.[5] It is also the largest body of fresh water in the region.[6] It has become eutrophic as a result of phosphates from agricultural and domestic pollution entering Lough Leane Reedbed, an important habitat on the edge of Lough Leane. This nutrient enrichment has caused several algal blooms in recent years. The blooms have not yet had a severe effect on the lake's ecosystem. To prevent further pollution causing a permanent change in the lake's ecosystem, a review of land use in the catchment area is being carried out.[5] Water quality in the lake appears to have improved since phosphates were removed from sewage in 1985.[7]