Waterloo is a city in the Canadian province of Ontario. It is one of three cities in the Regional Municipality of Waterloo (formerly Waterloo County). Waterloo is situated about 94 km (58 mi) southwest of Toronto. Due to the close proximity of the city of Kitchener to Waterloo, the two together are often referred to as "Kitchener–Waterloo" or the "Twin Cities".
While several unsuccessful attempts to combine the municipalities of Kitchener and Waterloo have been made, following the 1973 establishment of the Region of Waterloo, less motivation to do so existed, and as a result, Waterloo remains an independent city. At the time of the 2016 census, the population of Waterloo was 104,986.


Waterloo started on land that was part of a parcel of 675,000 acres assigned in 1784 to the Iroquois alliance that made up the League of Six Nations. The rare gift by Britain's King George III was commemorated with the naming of Waterloo County, which included Brantford and Galt.
The area includes three rivers: all three are tributaries to Lake Erie: Grand River, well known for its fishing; Conestogo River; and Speed River (Ontario). They form an important source for high quality potable water.

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