American States Water Company Announces Notice of First Quarter 2010 Results Conference Call

SAN DIMAS, Calif.--(Business Wire)--
American States Water Company (NYSE:AWR) will release its first quarter results
on Thursday, May 6, 2010, followed by a conference call at 11:00 a.m. Pacific
Time (PT), during which management will be making a brief presentation focusing
on the Company`s results, strategies, and operating trends.

Interested parties can listen to the live conference call over the Internet by
logging on to www.aswater.com. The call will also be recorded and replayed
beginning Thursday, May 6, 2010 at 2:00 p.m. PT and will run through Thursday,
May 13, 2010. The dial-in number for the audio replay is (888) 203-1112, Pass
Code ID# 9324991.

American States Water Company is the parent of Golden State Water Company,
American States Utility Services, Inc. and Chaparral City Water Company. Through
its subsidiaries, AWR provides water service to 1 out of 37 Californians located
within 75 communities throughout 10 counties in Northern, Coastal and Southern
California (approximately 255,000 customers) and to over 13,000 customers in the
city of Fountain Hills, Arizona and a small portion of Scottsdale, Arizona. The
Company also distributes electricity to over 23,000 customers in the Big Bear
recreational area of California. Through its contracted services subsidiary,
American States Utility Services, Inc., the Company contracts with the U.S.
government and private entities to provide various services, including water
marketing and operation and maintenance of water and wastewater systems.

Eva G. Tang
Senior Vice President - Finance, Chief Financial
Officer, Corporate Secretary and Treasurer
(909) 394-3600, extension 707

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