California Water Service Group Schedules Fourth Quarter and Year-End 2012 Earnings Results Announcement and Teleconference

SAN JOSE, CA -- (Marketwire) -- 02/06/13 -- California Water Service Group (NYSE: CWT) today announced that its fourth quarter and year-end earnings results will be released after market-close on Wednesday, February 27, 2013, and its teleconference will be held at 11:00 a.m. ET on Thursday, February 28, 2013.

All stockholders and interested investors are invited to listen to the teleconference. The 2012 fourth quarter and year-end conference call may be accessed by dialing 1-888-455-2296 or 1-719-457-2697 and keying in ID# 8496669. A replay of the call will be available from 2:00 p.m. ET on Thursday, February 28, 2013 through April 28, 2013, at 1-888-203-1112 or 1-719-457-0820, ID# 8496669. The call, which will be hosted by Chairman and Chief Executive Officer Peter C. Nelson, President and Chief Operating Officer Martin A. Kropelnicki and Vice President and Chief Financial Officer Thomas F. Smegal, will also be webcast under the investor relations tab at www.calwatergroup.com.

California Water Service Group is the parent company of California Water Service Company, Washington Water Service Company, New Mexico Water Service Company, Hawaii Water Service Company, Inc., CWS Utility Services, and HWS Utility Services. Together these companies provide regulated and non-regulated water service to more than 2 million people in 100 California, Washington, New Mexico and Hawaii communities. Group's common stock trades on the New York Stock Exchange under the symbol "CWT."

Released February 6, 2013