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.
Naco is a census-designated place (CDP) in Cochise County, Arizona, United States. Its population was 833 at the 2000 census. It is across the United States–Mexico border from Naco, Sonora. The Naco port of entry is open 24 hours per day. The present-day town of Naco, Arizona was established in the early 1900s. The area was originally settled by Opata Indians. Naco means "cactus" in the Opata language.