EXHIBIT 23.1 ARTHUR ANDERSEN LLP CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this Form S-8 Registration Statement of our reports dated February 7, 1996, included in Consumers Water Company's Annual Report Form 10-K for the year ended December 31, 1995 and August 15, 1996 included in Consumers Water Company Employees 401(k) Savings Plan and Trust's Form 11-K for the year ended Deember 31, 1995, and to all references to our Firm included in or made part of this Registration Statement. /s/ Arthur Andersen LLP Boston Massachusetts, January 15, 1997