CALIFORNIA AMERICAN WATER WEBSITE MAKES 24-HOUR CUSTOMER SERVICE MORE CONVENIENT

My H2O Online is a free and an easy tool for customers to manage their water service accounts LOS ANGELES, CA (December 16, 2009) – California American Water residential customers are accustomed to the convenience of 24-hour customer service, but a new website is making it easier for its Southern California customers to manage their accounts quickly and easily when the time is best for them. The new site, called My H2O Online and available at www.amwater.com/myh2o, allows customers to take care of some of the most common reasons they have contacted the company in the past, from requesting appointments for turning service on or off to managing their account, checking their balance and paying their bills. Customers with more than one property will be able to see all of their accounts at a glance. “We’re excited about how this new site will help all of our customers throughout Southern California – those who can take care of these common tasks online and those who need to speak with one of our representatives,” said general manager Todd Brown. “Customers who use the site will benefit from taking care of important tasks when it’s most convenient for them. If a customer needs to speak with one of our representatives – who are available 24-hours a day – we will be able to answer their calls and resolve their concerns even more quickly.” “Any of our Southern California residential customers can sign up for an online account and begin using that account today. All they need is the address of the property and the account number found on their most-recent billing statement,” Brown said. California American Water, a wholly owned subsidiary of American Water (NYSE: AWK), provides high-quality and reliable water and/or wastewater services to more than 600,000 people. Founded in 1886, American Water is the largest investor-owned 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 32 states and Ontario, Canada. More information can be found by visiting www.amwater.com. ### Brian A. Barreto Office: 626-614-2542 Mobile: 626-388-7484 [email protected]