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.
Deer Park is a census-designated place (CDP) in Napa County, California, United States. The population was 1,433 at the 2000 census. It is part of the Napa, California Metropolitan Statistical Area. Its area code is 707. Its zip code is 94576. It is in the Pacific Daylight Time time zone.