The Commonwealth of Massachusetts —— DEPARTMENT OF PUBLIC UTILITIES ORDER OF NOTICE D.P.U. 21-54 June 3, 2021 Joint Petition of Aquarion Company, Aquarion Water Company of Massachusetts, New England Service Company, Mountain Water Systems, Inc., and Colonial Water Company for approval by the Department of Public Utilities, pursuant to G.L. c. 164, § 96 and G.L. 165, § 2, of change of control and mergers. ____________________________________________________________________________ Aquarion Water Company of Massachusetts (“AWC-MA” or “Company”) shall, no later than fourteen (14) days prior to June 30, 2021, publish the attached Notice of Filing and Public Hearing in the following newspapers: (1) The Boston Globe or the Boston Herald; (2) The Patriot Ledger; and (3) the Berkshire Eagle. Within the same time frame, the Company shall serve a copy of the Notice on the following: (1) the Massachusetts Attorney General; (2) the Board of Selectmen and Town Clerk of the Town of Sheffield; (3) the Board of Selectmen and Town Clerk of the Town of Dover; (4) the Select Board and Town Clerk of the Town of Plymouth; (5) the service lists in Colonial Water Company, D.P.U. 18-105 (2018), Aquarion Water Company, D.P.U. 17-90 (2017), and Mountain Water Systems, Inc., D.P.U. 17-154 (2017); and (6) on any person who has asked to be notified by AWC-MA. AWC-MA’s service may be by electronic distribution, which the Department finds reasonable and consistent with the public interest. D.P.U. 21-54 Page 2 Also, within five (5) business days of receipt of the attached Notice, AWC-MA shall place a copy of the Notice on its website, https://www.aquarionwater.com, and shall arrange for a copy of the Notice to be placed on the website of both Mountain Water Systems, Inc., https://mountainwatersystemsinc.com, and Colonial Water Company, https://colonialwatercompany.com. In doing so, AWC-MA is directed to conspicuously reference the acquisition on the home pages of the three websites and provide a link to the Notice. The attached Notice shall be made available for viewing on the websites through at least June 30, 2021. AWC-MA shall provide the Department with proof of compliance with the directives of this Order of Notice on or before June 16, 2021. Such proof shall include: (1) return of service and proof of publication of the attached Notice, to include the original clippings of the newspaper publications; and (2) appropriate verification that the attached Notice was/will be made available for viewing according to this Order of Notice. By Order of the Department, /s/ Mark D. Marini, Secretary .