Exhibit 99.1


      Southwest Water Company Reports Third Quarter 2007 Results


    LOS ANGELES--(BUSINESS WIRE)--Nov. 9, 2007--Southwest Water
Company (NASDAQ:SWWC), a leading provider of water, wastewater and
public works services, today reported financial results for the third
quarter and nine months ended September 30, 2007.

    For the quarter, revenues decreased $1.6 million to $57.4 million
from $58.9 million in the third quarter of 2006. Operating income
declined $2.5 million to $5.3 million compared with $7.8 million in
prior year third quarter. Net income was down $1.6 million to $2.1
million, or $0.08 per diluted share, compared to $3.7 million, or
$0.16 per diluted share, in the same quarter of 2006. Weighted average
diluted shares outstanding increased 4% to 24.5 million.

    For the nine months ended September 30, 2007 compared with
September 30, 2006, revenues decreased $2.4 million to $160.4 million
from $162.8 million, operating income declined $2.0 million to $13.8
million from $15.7 million and net income was down $1.3 million to
$4.9 million, or $0.20 per diluted share, compared to $6.3 million, or
$0.27 per diluted share.

    "Our third quarter's results were impacted by $1.1 million of
non-recurring charges in our Services Group, record rainfall in Texas,
the national housing market slowdown and our investments in building a
solid foundation for the future of Southwest Water," said Mark A.
Swatek, Southwest Water chief executive officer and chairman. "We are
re-shaping this organization around the goals of improved bottom line
performance and an integrated infrastructure that positions us for
growth. We see opportunities for improvement across the enterprise -
in our Utility Group, Services Group and Corporate Overhead."

    Utility Group Q3 Results

    In the Utility Group, revenues were up 1% to $26.5 million from
$26.3 million in the third quarter of 2006, which include intersegment
revenues of $0.4 million in both periods. This increase was primarily
due to utility acquisitions and rate increases implemented since the
third quarter of last year, partially offset by lower consumption in
Texas utilities due to the record rainfall. Operating income decreased
4% to $9.2 million compared with $9.5 million in the third quarter
2006, primarily due to increased depreciation expense and operating
expense increases in Texas and New Mexico.

    "We are focused on enhancing our Utility Group income through
pursuing utility acquisitions and general rate case filings,"
commented Swatek. "We currently have four rate cases filed; the
largest being our Monarch Utility filing in Texas where we look to
have the regulators consider in rates our substantial efforts and
investments to bring quality of service up to Southwest's high
standards. Interim rates for Monarch went into effect in October. Our
Alabama wastewater utility receives a contracted annual rate increase
each January and we plan to file a case for our largest utility
located in Southern California in the first part of 2008."

    Services Group Q3 Results

    Services Group revenues were down 8% to $37.7 million from $40.9
million in the 2006 third quarter, which include intersegment revenues
of $7.2 million and $9.2 million, respectively. This decrease was
primarily due to reduced field work in Texas as a result of wet
weather, a slow down in housing construction in Texas and New Mexico
and a reduction in the company's contract base in its southeast
division. The Services Group recorded an operating loss for the
quarter of $255,000 compared to operating income of $922,000 in the
third quarter of 2006, primarily due to the reduction in revenues as
described above as well as a one time reserve of $650,000 and a spike
in health insurance costs of $450,000.

    "The Services Group supports three distinctly different customer
sets: the Texas Municipal Utility Districts or MUD's, municipal
clients through operations and maintenance contracts, and Southwest
Water's own Utility Group," commented Swatek. "We need to accelerate
our performance improvements and therefore we plan to refocus this
Group, including its business development efforts, in early 2008 along
these business lines to better serve the unique demands of each
customer base and eliminate any structural redundancies that may exist
today."

    Q3 SG&A and Capital Expenditures

    Consolidated selling, general and administrative (SG&A) expenses
for the quarter were $8.4 million versus $7.1 million in the third
quarter of 2006. Included in SG&A is approximately $700,000 of
increased costs associated with upgrades in management and staffing
put in place since the third quarter of 2006, which include salary,
wages and related benefits. Additionally, SG&A includes $500,000 of
costs related to Cornerstone, the company's continuing initiative to
consolidate, update and upgrade all underlying communications and
information technology systems, scheduled to be completed by the end
of 2009.

    "We have invested in improving our staff capabilities since this
time last year, resulting in significant upgrades to our internal
information technology resources and operational management," said
Swatek. "We have also invested in Cornerstone. This project is
imperative as our current systems can not sustain our operations and
they restrict the amount of growth we can effectively handle. These
incompatible systems negatively impact customer service, make our
accounting processes time consuming and costly, and prevent our
Services Group from realizing any efficiencies of scale. We anticipate
we will need to make capital expenditures of between $27 million and
$30 million to complete the implementation, which includes the $6
million we have capitalized for this project year to date. We expect a
10% internal rate of return over the life of this project."

    Total company funded capital expenditures were $9.9 million in the
quarter, including $3.9 million related to the Cornerstone project,
compared to $8.5 million in the third quarter of 2006.

    Conference Call

    The company will provide more detail regarding its third quarter
operating results in a conference call and web cast to be held today,
November 9, 2007, at 3:00 p.m. Eastern time (12 noon Pacific). The
conference call can be accessed on the company's website at
www.swwc.com. For those unable to participate in the live web cast, a
replay will be available shortly after the call on the company's
website. A telephonic replay will also be available beginning at 5:00
p.m. Eastern (2:00 p.m. Pacific) until midnight November 16, 2007 at
888-286-8010 (international callers 617-801-6888), passcode 62844079.

    Southwest Water Company provides a broad range of services,
including water production, treatment and distribution; wastewater
collection and treatment; utility billing and collection; utility
infrastructure construction management; and public works services. The
company owns regulated public utilities and also serves cities,
utility districts and private companies under contract. More than two
million people in ten states depend on Southwest Water for
high-quality, reliable service. Additional information may be found on
the company's website: www.swwc.com.

    This document contains "forward-looking statements" within the
meaning of the Private Securities Litigation Reform Act of 1995. These
statements, including expectations relating to future revenues and
income, the company's ability to gain new business and control costs,
involve risks and uncertainties, as well as assumptions that, if they
prove incorrect or never materialize, could cause the results of the
company to differ materially from those expressed or implied by such
forward-looking statements. Actual results may differ materially from
these expectations due to changes in regulatory, political, weather,
economic, business, competitive, market, environmental and other
factors. More detailed information about these factors is contained in
the company's filings with the Securities and Exchange Commission,
including under the caption "Risk Factors" in the company's 2006
Annual Report on Form 10-K. The company assumes no obligation to
update these forward-looking statements to reflect any change in
future events.




CONDENSED BALANCE SHEET INFORMATION
(unaudited and in thousands)

                                            September 30, December 31,
                                                2007          2006
                                            --------------------------

Current assets                                   $ 41,664     $ 48,257
Property, plant and equipment, net                421,850      389,625
Total assets                                     $519,737     $491,693

Current liabilities                              $ 33,827     $ 35,830
Long-term debt                                    143,090      128,624
Contributions in aid of construction              116,128      110,024
Stockholders' equity                              172,341      166,527
Total liabilities and stockholders' equity       $519,737     $491,693




CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(unaudited and in thousands, except per share amounts)

                                Three Months Ended  Nine Months Ended
                                  September 30,       September 30,
                                  2007      2006     2007      2006
Operating Revenues:
  Utility Group                  $26,456  $26,267  $ 70,934  $ 65,780
  Services Group                  37,723   40,869   108,439   120,000
    Less intersegment
     eliminations                 (6,821)  (8,192)  (18,966)  (22,946)
                                ------------------ -------------------
Total revenues                    57,358   58,944   160,407   162,834
                                ------------------ -------------------

Expenses:
  Utility Group operating
   expenses                       15,030   14,539    39,619    35,442
  Services Group operating
   expenses                       28,608   29,272    80,733    86,021
  Selling, general and
   administrative                  8,437    7,115    26,282    24,708
  Impairment of goodwill              --      261        --       929
                                ------------------ -------------------
Total expenses                    52,075   51,187   146,634   147,100
                                ------------------ -------------------

Operating income                   5,283    7,757    13,773    15,734

Other income (expense)
  Interest expense                (2,182)  (2,081)   (6,376)   (6,333)
  Interest income                    291      108       507       363
  Other, net                         (41)      11      (102)       --
                                ------------------ -------------------

Income before income taxes and
 change in accounting principle    3,351    5,795     7,802     9,764
Provision for income taxes        (1,276)  (2,123)   (2,890)   (3,575)
                                ------------------ -------------------

Income before change in
 accounting principle              2,075    3,672     4,912     6,189

Cumulative effect of change in
 accounting principle, net of
 tax                                  --       --        --        71
                                ------------------ -------------------

Net income                         2,075    3,672     4,912     6,260

Preferred stock dividends             (6)      (6)      (18)      (18)
                                ------------------ -------------------

Net income applicable to common
 holders                           2,069    3,666     4,894     6,242
                                ------------------ -------------------

Earnings per common share:
  Basic                          $  0.09  $  0.16  $   0.20  $   0.28
  Diluted                        $  0.08  $  0.16  $   0.20  $   0.27

Weighted average outstanding
 common shares (diluted)          24,472   23,422    24,357    23,184



    CONTACT: Southwest Water Company
             DeLise Keim, VP Corporate Communications, (213) 929-1846
             www.swwc.com
             or
             PondelWilkinson Inc.
             Robert Jaffe, (310) 279-5969
             www.pondel.com