Business Directory Utilities United Illuminating60 Marsh HillOrange, CT 06477203-499-2247Send EmailMember Since 2000 Aquarion Water Company of Connecticut714 Black Rock RoadEaston, CT 06612203-445-7455Send EmailSee Also Utilities - WaterMember Since 2000 CPV Towantic16 Woodruff Hill RoadOxford, CT 06478203-727-8405Send EmailMember Since 2014 Eversource EnergyPO Box 270Hartford, CT 06141800-989-0900 Send EmailMember Since 2000 Iroquois Gas Transmission SystemOne Corporate Drive Ste 600Shelton, CT 06484203-925-7200Send EmailMember Since 2000 Regional Water Authority90 Sargent DriveNew Haven, CT 06511203-401-2598Send EmailMember Since 2008