American Water Works (AWK) 8-K Computation of Ratio of Earnings to Fixed Charges and Preferred Stock Dividends

Exhibit 99.1

American Water Works Company, Inc.

Computation of Ratio of Earnings to Fixed Charges and Preferred Stock Dividends

(dollars in thousands)

	2010		2011		2012		2013		2014		For the six months ended June 30, 2015
Income from continuing operations before income taxes	$	430,253	$	502,185	$	630,389	$	607,937	$	709,814	$	337,129
Fixed Charges:
Interest, dividend on mandatory redeemable preferred shares and amortization of debt discount and expenses and premium on all indebtedness		325,134		321,685		316,889		314,908		304,866		154,747
Interest factor in rentals		12,231		11,017		9,222		7,706		7,222		3,439
Interest costs from discontinued operations		1,319		2,266		277		—		—		—
Total fixed charges		338,684		334,968		326,388		322,614		312,088		158,186
Income from continuing operations plus fixed charges		768,937		837,153		956,777		930,551		1,021,902		495,315
Preferred dividend requirements		224		224		153		19		—		—
Ratio of pre-tax income to net income		1.68		1.65		1.69		1.64		1.65		1.66
Preferred dividend factor		377		371		258		31		—		—
Total fixed charges		338,684		334,968		326,388		322,614		312,088		158,186
Total fixed charges and preferred dividends		339,061		335,339		326,646		322,645		312,088		158,186
Ratio of earnings to combined fixed charges and preferred dividends		2.27		2.50		2.93		2.88		3.27		3.13

American Water Capital Corp.

Computation of Ratio of Earnings to Fixed Charges and Preferred Stock Dividends

(dollars in thousands)

	2010		2011		2012		2013		2014		For the six months ended June 30, 2015
Income (loss) before income taxes	$	—	$	—	$	—	$	—	$	—	$	—
Fixed Charges:
Interest, dividend on mandatory redeemable preferred shares and amortization of debt discount and expenses and premium on all indebtedness		206,010		211,982		213,835		225,511		215,272		110,576
Total fixed charges		206,010		211,982		213,835		225,511		215,272		110,576
Income (loss) plus fixed charges		206,010		211,982		213,835		225,511		215,272		110,576
Total fixed charges		206,010		211,982		213,835		225,511		215,272		110,576
Total fixed charges and preferred dividends(a)		206,010		211,982		213,835		225,511		215,272		110,576
Ratio of earnings to combined fixed charges and preferred dividends		1.00		1.00		1.00		1.00		1.00		1.00

(a) American Water Capital Corp. had no preferred stock outstanding for any period presented, and, accordingly, the ratio of earnings to combined fixed charges and preferred stock dividends is the same as the ratio of earnings to fixed charges.