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.
Yarnell is a census-designated place (CDP) in Yavapai County, Arizona, USA. The population was 645 at the 2000 census. Yarnell's economy is based on ranching, mining and services to travelers and retirees. Peeples Valley, three miles north, is closely linked to Yarnell.