Middlesex Water Company (Middlesex) is a water utility company. The Company owns and operates regulated water utility and wastewater systems in New Jersey, Delaware and Pennsylvania. Middlesex also operates water and wastewater systems under contract on behalf of municipal and private clients in New Jersey and Delaware. It operates in two segments: Regulated and Non-Regulated. During the year ended December 31, 2011, its Regulated segment contributed approximately 90% of total revenues. The Regulated segment consists of collecting, treating and distributing water on a retail and wholesale basis to residential, commercial, industrial and fire protection customers in parts of New Jersey, Delaware and Pennsylvania. This segment also includes regulated wastewater systems in New Jersey and Delaware. The Non-Regulated segment consists of non-regulated contract services for the operation and maintenance of municipal and private water and wastewater systems in New Jersey and Delaware.