Exhibit 12.1

California Water Service Group

Computation of Ratios of Earnings to Fixed Charges

(In thousands except ratios)

	Years Ended December 31,
	2015				2014				2013				2012				2011
Earnings:
Income before income tax expense	$	70,307			$	84,710			$	67,723			$	70,279			$	60,878
Fixed charges interest expense	29,467				28,765				31,179				32,354				32,455
Capitalized interest	(1,915		)		(1,535		)		(2,038		)		(3,401		)		(2,741		)
Total	97,859				111,940				96,864				99,232				90,592
Fixed Charges:
Interest expensed & capitalized, & amortization of capitalized expense related to indebtedness	29,185				28,483				30,897				32,072				32,455
Estimated interest component of rent expense	$	282			$	282			$	282			$	282			$	474
Total	29,467				28,765				31,179				32,354				32,929
Ratio of earnings to fixed charges	3.32				3.89				3.11				3.07				2.75