Blessington Street Basin (Irish: Báisín Shráid Bhaile Coimín) is a former drinking water reservoir in northern central Dublin which operated from 1810 until the 1970s, serving the north city.

[4][5] The water came from the Broadstone line of the Royal Canal, and so ultimately from Lough Owel in County Westmeath.

[8] There were worries about the stagnant water creating a typhoid outbreak in the late 1800s leading the city corporation to consider filling in the basin and the stretch of water connecting the basin to the canal; this connection was finally filled in 1956.

[9] The site also includes a lodge house built in a Tudor style in 1811,[6] and another modern council building.

[8] Since its restoration, the basin now serves as a bird habitat, with an artificial island and a number of fish.