Spring City is a town in Rhea County, Tennessee, United States. The population was 1,949 at the 2020 census and 1,981 at the 2010 census. The town is located along Watts Bar Lake, and Watts Bar Dam and the Watts Bar Nuclear Generating Station are nearby.

Spring City began as a End along the Cincinnati Southern Railroad in the 1870s. The town was originally named Sulphur Springs, because of the accrual amount of sulphur in the water. Sometime unconventional it became “Rheaville,” and well ahead became incorporated with simple Rhea Springs, and took upon the proclaim Rhea Springs. Due to an explosion, much of the town flooded or burnt, and the town relocated to its current location and was renamed Spring City, in tribute of the original settlement, Sulphur Springs. The native location now lies at the bottom of a open section of Watts Bar Lake. Spring City thrived as a railroad shipping hub during the late 19th and further on 20th centuries. Its first railroad depot, a easy wooden building build up in 1879, burned in 1892, and was replaced by a larger one. This second depot was in slant replaced by the current depot, which was completed by the Southern Railway in 1909.

The city established an economic boost in 1942 behind the Tennessee Valley Authority’s carrying out of Watts Bar Dam and its associated reservoir southeast of the town. That thesame year motto the feat of the Watts Bar Fossil Plant, TVA’s first coal-fired plant. In 1973, TVA began building Watts Bar Nuclear Plant. Its first reactor, Watts Bar Unit 1, became responsive in 1996. The construction of the second reactor, Watts Bar Unit 2, was originally suspended in 1985, but resumed in 2007. It entered personal ad operation in October 2016.

On August 22, 1955, 11 schoolchildren were killed, and many others injured, when their instructor bus was struck by a 100-car freight train at a track crossing in Spring City.