Middlesex Water is a water utility company, which owns and operates regulated water utility and wastewater systems in New Jersey, Delaware, and Pennsylvania. It engages in collecting, treating, and distributing water for domestic, commercial, municipal, industrial, and fire protection purposes. The company provides services in areas of water production, treatment, and distribution; full-service municipal contract operations, the design, construction, and management of system assets, public-private partnerships, wastewater collection and treatment, water and wastewater system maintenance, water, and sewer line maintenance.