Public utilities provide electric, gas, water or telephone service to customers in a specified area. Utilities have a duty to provide safe and adequate service on reasonable terms to anyone who lives within the service area on without discriminating between customers. Because most utilities operate in near monopolistic conditions, they can be heavily regulated by local, state, and federal authorities. Generally, the local and state agencies are called Public Service Commissions (PSC) or Public Utility Commissions (PUC). Municipal Utilities and Rural Electric Cooperatives may be unregulated though.
Tsaile is a census-designated place (CDP) in Apache County, Arizona, United States, within the Navajo Nation. The population was 1,078 at the 2000 census. Tsaile is the home of the main campus of Diné College (formerly Navajo Community College), a tribally controlled community college with seven other campuses across the Navajo Nation. Tsaile Public School (Grades K-8) is located in Tsaile. Residents go to Chinle High School in Chinle for high school.