From Wikipedia, the free encyclopedia

A public utility (usually just utility in British English) is a company that maintains the infrastructure for a public service (often also providing a service using that infrastructure). Public utilities often involve natural monopolies, and as a result are often government monopolies, or if privately owned, the sectors are specially regulated by a Public Utilities Commission.

Public utilities can be privately owned or publicly owned. Publicly owned utilities include cooperative and municipal utilities. Municipal utilities may actually include territories outside of city limits or may not even serve the entire city. Cooperative utilities are owned by the customers they serve. They are usually found in rural areas. Private utilities, also called investor owned utilities, are owned by investors. Unlike public companies, private utilities may be listed on the stock exchange. Private, in this context, means not owned by the public or the government.

In poorer developing countries, public utilities are often limited to wealthier parts of major cities, as used to be the case in developed countries in the nineteenth century. However, in some developing countries utilities do provide services to a large share of the urban population, such as in the case of water and sanitation in Latin America.

Examples of utilities are:

• An electric utility, which in some instances can be electric power transmission or electricity distribution organizations.
• Drinking water purification and distribution
• Sewage treatment and disposal
• Other waste disposal
• Natural gas distribution
• District heat generation and distribution
• Public transport
• Telecomunications, such as cable television and telephone lines
• Roads, including tollways

Developments in technology have eroded some of the natural monopoly aspects of traditional public utilities. For instance, electricity generation, electricity retailing, telecommunication and postal services have become competitive in some countries and the trend towards liberalization, deregulation and privatization of public utilities is growing. However, the network infrastructure used to distribute most utility products and services has remained largely natural monopolostic.

• CWD – County Water District
• FCWCD – Flood Control and Water Conservation District
• FWSD – Fresh Water Supply District
• ID – Irrigation District
• IOU - Investor-owned utility
• MWA – Municipal Water Authority
• MWD – Municipal Water District
• MUD – Municipal Utility District
• PUD – Public Utility District
• WA – Water Agency
• WCID – Water Control and Improvement District
• WD – Water District
• WS – Water System
• WSC – Water Supply Corporation

• Off-the-grid
• Lists of public utilities
• Public services
• Liberalization
• Electricity market
• Energy
• Telecommunications
• Universal service
• Firm service
• Common utility duct
• Utility cooperative
• NAICS 22