Exhibit 12.1

California Water Service Group

Computation of Ratios of Earnings to Fixed Charges

(In thousands except ratios)

	Years Ended December 31,
	2016				2015				2014				2013				2012
Earnings:
Income before income tax expense	$	75,491			$	70,307			$	84,710			$	67,723			$	70,279
Fixed charges interest expense	33,748				29,467				28,765				31,179				32,354
Capitalized interest	(2,965		)		(1,915		)		(1,535		)		(2,038		)		(3,401		)
Total	106,274				97,859				111,940				96,864				99,232
Fixed Charges:
Interest expensed & capitalized, & amortization of capitalized expense related to indebtedness	33,466				29,185				28,483				30,897				32,072
Estimated interest component of rent expense	$	282			$	282			$	282			$	282			$	282
Total	33,748				29,467				28,765				31,179				32,354
Ratio of earnings to fixed charges	3.15				3.32				3.89				3.11				3.07