Delta is a city in Millard County, Utah, United States. The population was 3,436 at the 2010 census. The Sevier River flows near Delta. The Sevier River is generally used by irrigation before it reaches its eventual end, the dry Sevier Lake. One of the main sources of income for Delta is a power plant called operated by the Intermountain Power Agency and known as the Intermountain Power Project or I.P.P. It is also referred to as Intermountain Power Service Corporation or I.P.S.C. This coal-powered power plant supplies power for much of Los Angeles county in California. The plant was originally designed for 4 units, but only 2 have been built. Each unit produces 900 megawatts of electricity.

Brush Wellman is a mine and refining plant located at one of the few sources of concentrated beryllium in the world. The plant is a mill and finishing facility for beryllium, a high-strength, lightweight metal used in military, aerospace, and medical industries. The ore for the plant comes from Brush Wellman's mine, located in the Topaz-Spor Mountains, 50 miles west, which is North America's only developed source for the metal. The facility is located here due to the remoteness of the area, as beryllium dust is highly toxic, and the proximity of a large source of power: the Intermountain Power Project.

Graymont Lime has a plant in the Cricket Mountains, about 32.5 miles southwest of Delta. It is one of the 10 largest lime plants in the United States. It was previously owned by Continental Lime which was purchased by Graymont Lime.

Alfalfa hay is the main crop of the Delta area. Because of Delta's dry climate, the farmers are able to control the alfalfa hay's moisture when it is baled. This is very important to prohibit mold growth.

en.wikipedia.org/wiki/Delta,_Utah