Exhibit 23.1 REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS ON SCHEDULES TO EASTERN ENTERPRISES: We have audited, in accordance with generally accepted auditing standards, the consolidated financial statements included in Eastern Enterprises Annual Report to Shareholders incorporated by reference in this Form 10-K, and have issued our report thereon dated January 22, 1999. Our audit was made for the purpose of forming an opinion on those statements taken as a whole. The schedules listed in the index on page F-1 are the responsibility of Eastern's management and are presented for purposes of complying with the Securities and Exchange Commission's rules and are not part of the basic financial statements. These schedules have been subject to the auditing procedures applied in the audit of the basic financial statements and, in our opinion, fairly state in all material respects the financial data required to be set forth therein in relation to the basic financial statements taken as a whole. /s/ Arthur Andersen LLP Arthur Andersen LLP Boston, Massachusetts January 22, 1999 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference of our reports, dated January 22, 1999, included in, and incorporated by reference into, Eastern Enterprises Annual Report on this Form 10-K for the year ended December 31, 1998, into Eastern's previously filed Post-Effective Amendment No. 1 to Form S-16 Registration Statement No. 2-71614 on Form S-3, Form S-4 Registration Statement No. 333-69039 and Form S-8 Registration Statements No. 2-77146, No. 33-19990, No. 33-40862, No. 33-56424, No. 33-58873 and No. 333-69407. /s/ Arthur Andersen LLP Arthur Andersen LLP Boston, Massachusetts March 5, 1999