- Welcome to Aquarion Company's home page! We have grown significantly since the January 2000 merger with Kelda Group plc of Leeds, England. In May 2002 we announced the acquisition of four American Water Works subsidiaries in Massachusetts, New York, and New Hampshire; as well as Aquarions BHC Company subsidiarys closing on the acquisition of the Connecticut-American Water Company. To incorporate ...www.aquarion.com