| Year ended December 31 | 2006 | 2005 | 2004 | 2003 | 2002 |
| Market price at year-end | $40.40 | $38.23 | $37.65 | $27.40 | $23.65 |
| Book value | 18.31 | 15.98 | 15.66 | 14.44 | 13.12 |
| Earnings per share (diluted) | 1.34 | 1.47 | 1.46 | 1.21 | 1.25 |
| Dividends per share | 1.150 | 1.140 | 1.130 | 1.125 | 1.120 |
| Revenue | 334,717 | 320,728 | 315,567 | 277,128 | 263,151 |
| Net income | 25,580 | 27,223 | 26,026 | 19,417 | 19,073 |
California Water Service Group (NYSE: CWT) is the second largest investor-owned water utility in the United States, providing high-quality water utility services to more than 2 million people in 100 communities through five subsidiaries: California Water Service Company (Cal Water), Hawaii Water Service Company, Inc. (Hawaii Water), New Mexico Water Service Company (New Mexico Water), Washington Water Service Company (Washington Water), and CWS Utility Services (Utility Services). Cal Water, Hawaii Water, New Mexico Water, and Washington Water provide regulated water utility services, while Utility Services conducts the Company's non-regulated business, which includes providing billing, water quality testing, and water system operations and management services to cities and other companies.