1 EXHIBIT 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this Form 10-K of our report dated March 26, 1999 in the American States Water Company and Southern California Water Company Registration Statements below. It should be noted that we have not audited any financial statements of the Company subsequent to December 31, 1998. Registration Form Registration No. Effective Date S - 3 33-42218 August 22, 1991 S - 8 33-71226 November 4, 1993 S - 3 333-68201 December 16, 1998 S - 3 333-68299 December 22, 1998 s/ ARTHUR ANDERSEN LLP - ---------------------------- Los Angeles, California March 26, 1999