Lough Talt (Irish: Loch Tailt)[4] is a lake in the Ox Mountains of south County Sligo, Ireland.[6] Fish species in Lough Talt include brown trout, three-spined stickleback, perch, the threatened Arctic char and the critically endangered European eel.[7] The lake is also the starting point for the Sligo Way, a 80 km (50 mi) trail that ends in Dromahair, County Leitrim.[8] Lough Talt is the source of domestic treated water for a large percentage of the population in south County Sligo, including Tubbercurry and Ballymote.As of May 2019[update], a multi-year project to upgrade the Lough Talt Water Treatment plant began.