UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: May 9, 2008 4:00 P.M.
Form: S-4
CIK: 0001410635
Company Name: American Water Capital Corp.
File Number: 333-148284
CIK: 0001410636
Company Name: American Water Works Company, Inc.
File Number: 333-148284-01