American Water’s 2011 First Quarter Conference Call Scheduled for May 5, 2011

American Water Works Company, Inc. (NYSE: AWK) announced today that it intends to release its 2011 first quarter financial results after the market closes on Wednesday, May 4, 2011.

Jeff Sterba, president and chief executive officer, and Ellen Wolf, senior vice president and chief financial officer, will host the first quarter 2011 earnings conference call and audio webcast with investors, analysts and other interested parties on Thursday, May 5, 2011 at 9:00 a.m. Eastern Daylight Time. There will be a question and answer session as part of the call.

Interested parties may listen over the Internet by logging on to the Investor Relations page of the company’s Web site at www.amwater.com.

Following the earnings conference call, an audio archive of the call will be available through May 12, 2011, by dialing 303-590-3030 for U.S. and international callers. The access code for replay is 4433985. The online archive of the webcast will be available through June 6, 2011, by accessing the Investor Relations page of the company’s Web site located at www.amwater.com.

Founded in 1886, American Water is the largest publicly traded U.S. water and wastewater utility company. With headquarters in Voorhees, N.J., the company employs more than 7,000 dedicated professionals who provide drinking water, wastewater and other related services to approximately 15 million people in more than 30 states as well as parts of Canada.

In 2011, American Water is celebrating its 125^th anniversary with a yearlong campaign to promote water efficiency and the importance of protecting water from source to tap. To learn more, visit www.amwater125.com.