Connecticut Water Service, Inc. is a non-operating holding company. The Company's income is derived from the earnings of its subsidiary companies, including The Connecticut Water Company (Connecticut Water), The Maine Water Company (Maine Water), New England Water Utility Services, Inc. (NEWUS),The Avon Water Company (AWC) and Chester Realty Company (Chester Realty). It operates through three segments: Water Operations, Real Estate Transactions, and Services and Rentals. The Water Activities segment consists of its regulated water activities to supply public drinking water to customers. The Real Estate Transactions segment involves the sale or donation for income tax benefits of its real estate holdings. Services and Rentals segment provides contracted services to water and wastewater utilities and other clients, and also leases certain of the Company's properties to third parties through unregulated companies in the State of Connecticut and through Maine Water in the State of Maine.