Middlesex Water Company provides regulated and non-regulated water, wastewater utility, and related services. The company operates in two segments, Regulated and Non-Regulated. The Regulated segment engages in 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 operates regulated wastewater systems in New Jersey and Delaware. The Non-Regulated segment provides non-regulated contract services for the operation and maintenance of municipal and private water and wastewater systems in New Jersey and Delaware. Middlesex Water Company was founded in 1897 and is headquartered in Iselin, New Jersey.