Utilities refer to the set of services consumed by the public: electricity, gas, water, and sewage. Telephone services may be included but are listed under Phone, TV and Internet. Water supply and sanitation in Zambia is now managed by regional commercial utilities for urban areas and is overseen by a regulatory agency, NWASCO. These utility companies are listed here. Zambia Electricity Supply Company Ltd, ZESCO is the national authority and is responsible for generating power transmission and distribution. Utility gas is supplied by private companies which are listed here.