COMPUTATION OF RATIOS OF EARNINGS

Published on March 11, 2003

Exhibit 12.1

CALIFORNIA WATER SERVICE GROUP
COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES

In thousands except ratios



Year ended December 31
2002 2001 2000 1999 1998

EARNINGS (1):
Income before income tax expense $ 24,693 $ 31,534 $ 35,486 $ 31,285
Fixed charges expensed and capitalized 17,214 15,680 14,798 14,095
Capitalized interest (858) (703) (324) (224)
Preferred dividend requirements (255) (255) (255) (255)
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$ 40,794 $ 46,256 $ 49,705 $ 44,901
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Fixed charges:
Interest expensed and capitalized, and
amortization of capitalized
expenses related to indebtedness $ 16,887 $ 15,349 $ 14,489 $ 13,791
Estimated interest component of
rent expense 72 76 54 49
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$ 16,959 $ 15,425 $ 14,543 $ 13,840
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Ratio of earnings to fixed charges 2.41 3.00 3.42 3.24
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(1) As defined by Item 503(d) of Regulation S-K.