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Exhibit 12.1


California Water Service Group
Computation of Ratios of Earnings to Fixed Charges
(In thousands except ratios)

 
   Year ended December 31,  
 
   2013   2012   2011   2010   2009  

Earnings:

                                

Income before Income Tax Expense

   $ 67,723   $ 70,279   $ 60,878   $ 62,211   $ 67,916  

Fixed Charges Interest Expense

     31,179     32,354     32,455     27,936     24,394  

Capitalized Interest

     (2,038 )   (3,401 )   (2,741 )   (1,563 )   (3,081 )
                       
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Total

   $ 96,864   $ 99,232   $ 90,592   $ 88,584   $ 89,229  
                       
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
                       

Fixed Charges:

                                

Interest Expensed & Capitalized, & amortization of capitalized expense related to indebtedness

   $ 30,897   $ 32,072   $ 32,455   $ 27,936   $ 24,394  

Estimated Interest Component of Rent Expense

     282     282     474     338     329  
                       
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Total

   $ 31,179   $ 32,354   $ 32,929   $ 28,274   $ 24,723  
                       
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
                       

Ratio of Earnings to Fixed Charges

     3.11     3.07     2.75     3.13     3.61  



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California Water Service Group Computation of Ratios of Earnings to Fixed Charges (In thousands except ratios)