EXHIBIT 23.1 CONSENT OF INDEPENDENT AUDITORS We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (File Nos. 33-53211, 333-94525, 333-51702, and 333-88544) of Connecticut Water Service, Inc. of our reports dated February 11, 2004 relating to the financial statements and financial statement schedules, which appear in this Form 10-K. /s/ PricewaterhouseCoopers, LLP Boston, Massachusetts February 11, 2004