The completion of the Tidal Basin Inlet Bridge in 1908 helped to facilitate the recreational usage of East and West Potomac Parks. In 1918, large liquid-chlorine dispensers were installed under the bridge to treat the water and make the Tidal Basin (also known as Twining Lake) suitable for swimming. The Tidal Basin Beach, on the site of the future Memorial, opened in May 1918 and operated as a "Whites Only" facility until 1925, when it was permanently closed to avoid the question of racial integration.