Tacoma's relationship with public utilities extends back to 1893. At that time the city was undergoing a boom in population, causing it to exceed the available amount of fresh water supplied by Charles B. Wright's Tacoma Light & Water Company. In response to both this demand and a growing desire to have local public control over the utility system, the city council put up a public vote to acquire and expand the private utility. The measure passed on July 1, 1893, with 3,195 in favor of acquiring the utility system and 1,956 voting against. Since then, Tacoma Public Utilities (TPU) has grown from a small water and light utility to be the largest department in the city's government, employing about 1,200 people.