Southwest Water to Report 2005 Second Quarter Results And Host Conference Call on Tuesday, August 9, 2005

Southwest Water Company (NASDAQ:SWWC), a leading
provider of water and wastewater services through utility ownership
and contract operations, will release its second quarter 2005
financial results on Tuesday, August 9, 2005. The company will host an
investor conference call that same day at 1:30 p.m. Pacific time (4:30
p.m. Eastern) to discuss financial results and operations.
   The conference call will be broadcast live over the Internet and
can be accessed on Southwest Water Company's Web site at www.swwc.com.
Those wishing to listen to the live call should visit the Web site and
click on the Conference Call link at least 15 minutes prior to the
start of the call to register and download any necessary audio
software. For those unable to participate in the live broadcast, the
call will be archived and accessible on the company's Web site.
   Southwest Water Company provides a broad range of operations,
management and maintenance services, including water production,
treatment and distribution; wastewater collection and treatment;
customer service; and utility infrastructure construction management.
The company owns regulated public utilities and also serves cities,
utility districts and private companies under contract. More than two
million people from coast to coast depend on Southwest Water for
high-quality, reliable service. Additional information may be found on
the company's Web site: www.swwc.com.