RESTATEMENT

SouthWest Water Company and its subsidiaries' ("SouthWest Water" or the "Company") condensed consolidated statements of operations for the three- and six-month periods ended June 30, 2008 and condensed consolidated statement of cash flows for the six-month period ended June 30, 2008 and related financial information have been restated to correct for certain accounting errors. For further details on the nature of the corrections and the related effects on the Company's previously issued consolidated financial statements, see Note 2 to our Condensed Consolidated Financial Statements, "Restatement of Condensed Consolidated Financial Statements." Restated balances have been identified with the notation "As Restated" where appropriate. Throughout this Quarterly Report, the term "as previously reported" will be used to refer to balances from the 2008 condensed consolidated financial statements as reported prior to restatement for the errors.

The corrections to the reports for the affected prior period are contained in this report on Form 10-Q, and we are not filing a separate amended report for such period.

SPECIAL NOTE ABOUT FORWARD-LOOKING STATEMENTS

Management's Discussion and Analysis of Financial Condition and Results of Operations ("MD&A") is intended to help the reader understand the results of operations and financial condition of SouthWest Water Company. This MD&A also contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements contained herein that are not clearly historical in nature are forward-looking, and the words "anticipate," "believe," "belief," "expect," "estimate," "project," "plan," "intend," "continue," "predict," "may," "will," "should," "strategy," "will likely result," "will likely continue," and similar expressions are generally intended to identify forward-looking statements. Forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from our historical experience and our present expectations or projections. A detailed discussion of these and other risks and uncertainties that could cause actual results and events to differ materially from such forward-looking statements is included in the section entitled "Item 1A. Risk Factors" in our 2008 Annual Report on Form 10-K. Caution should be taken not to place undue reliance on any such forward-looking statements since such statements speak only as of the date when made. Other than as required by applicable law, we undertake no obligation to publicly update or revise forward-looking statements whether as a result of new information, future events, or otherwise.

The MD&A is intended to help the reader understand the results of operations, financial condition and cash flows of SouthWest Water Company and is provided as a supplement to, and should be read in conjunction with, our condensed consolidated financial statements and the accompanying notes to the financial statements included in this report.

OVERVIEW

SouthWest Water's principal business activity is to operate and maintain water and wastewater infrastructure. Through our operating subsidiaries, we own 131 systems and operate hundreds more under contract to cities, utility districts and private companies. SouthWest Water was incorporated in California in 1954 and reincorporated in Delaware in 1988. We maintain our corporate offices in Los Angeles, California.

In the past ten years, we have completed over 19 acquisitions of both utility and contract service businesses. These acquisitions previously operated largely independent of each other, resulting in a complex business structure with varying business practices. In 2006, our Board of Directors appointed a new Chief Executive Officer to, among other things, review Company operations and plan for future growth. Beginning in 2007, we implemented changes to better integrate the various segments of the business. In 2007 and 2008, we made a major change to how we operate; we consolidated many of the departments that provide common support functions such as environmental health and safety, our financial and accounting services, information technology and our customer call center. These consolidated departments allocate their costs to each operating segment where appropriate. In 2008, our operations were divided into four operating segments to better focus the distinct strategies of each of our operating businesses. Each segment has imbedded in it the direct operating cost and infrastructure to deliver on its business plan, relying upon the allocated common support functions discussed above. Each operating segment is led by a Managing Director and a Financial Director. We believe this management structure brings both direct operational and financial accountability to each of the operations.

As a result of this reorganization, we now have four reporting segments. We separate our segments first by whether we own the utility or we provide contract services to others. Our owned water and wastewater utilities are referred to as our Utilities operations ("Utilities"). In our financial statements we report our Texas Utilities operations ("Texas Utilities") as a separate segment because of different economic characteristics. This is principally because the Texas Utilities predominantly under-recovered their current cost of service, which includes a reasonable return on equity, as we have made large investments in these operations since acquisition that are not yet being recovered through the rates we charge. Our contract operations are segmented by contract type into those that are generally larger, stand-alone operations ("O&M Services") and those that are small, full service contracts operated by a common team of personnel resulting in a model that proportions a fractional cost to each client ("Texas MUD Services").

Utilities consist of our owned water and wastewater utilities located in California, Alabama and Mississippi. Our New Mexico utility was part of this segment prior to its sale in May 2009 (see Note 6 to our Condensed Consolidated Financial Statements, "Legal Proceedings," for detailed information on the New Mexico utility sale). Residential customers make up the largest component of our Utilities customer base, with these customers representing approximately 91% of our water and wastewater connections. Substantially all of our Utilities customers are metered which allows us to measure and bill for each customer's water consumption. Each of the operations in this segment has a unique service territory that is subject to state and federal regulations regarding standards of water quality, safety, environmental and other matters. The rates that we can charge for water and wastewater service include the opportunity to earn a reasonable rate of return on investments in these utilities as approved by state regulatory agencies; except for some of our Alabama wastewater rates which are governed by our service agreements. Some of these governmental agencies approve a forward looking recovery of costs and some approve recovery of costs based on a historical test year (backward looking). Our Utilities operations are characterized by ongoing capital investments to maintain and enhance the reliability and quality of the service we provide, as well as routine growth from rate increases and new connections.

Texas Utilities consists of 120 small, mostly rural systems that are grouped into nine jurisdictional utilities across Texas. Residential customers make up the largest component of our Texas Utilities customer base, with these customers representing approximately 98% of our water and wastewater connections. Substantially all of our Texas Utilities customers are metered which allows us to measure and bill for our customers' water consumption. These systems are broadly dispersed geographically. The majority of the systems are organized as one utility with a single tariff, known as Monarch Utilities. The Monarch utilities, as well as two smaller systems acquired in 2007, were in various stages of disrepair at the time of acquisition and we continue to spend significant amounts of capital to maintain regulatory compliance and to improve the quality of service. We are not yet recovering all of these costs in our rates and as a result, we have a lower rate of return than typically expected from a utility. We intend to actively pursue recovery of these costs in the rate setting process. All other aspects of operations for these utilities are the same as our Utilities operations; therefore, as soon as we are recovering our costs, including a reasonable return on equity, we expect to aggregate this segment with our Utilities segment.

O&M Services generally consists of operations that are project-specific contracts with cities, public agencies and private owners. Most contracts are stand-alone operations staffed with project-specific personnel, with an average contract life of two to three years. Under a typical O&M contract, we charge a fee that covers a specified level of service that includes facility operations and maintenance and may include other water or wastewater related services. Services are typically provided evenly throughout the contract period and are billed on a monthly basis. If we provide services beyond the scope of a contract, we bill for the additional services on a time-and-materials basis or negotiate a unique price. These contracts are largely located in California, Colorado, Alabama, Mississippi, and Georgia.

Texas MUD Services is a full service provider of utility services to a large number of small utilities in Texas that are mostly owned by municipal utility districts ("MUD"). A MUD is created to provide water supply, wastewater treatment and drainage service to areas where municipal services are not available. We service over 270 MUD clients with a common team of client managers, operators, customer service and billing personnel. Therefore, these contracts are allocated a proportional amount of each cost center creating a business model that is significantly different from that of O&M Services. Under a typical MUD contract, we bill a monthly base fee to provide a specified level of service; usually water and/or wastewater facility inspections, routine operations, equipment maintenance, and utility customer service including meter reading, call center, dispatch, and billing and collection services. We bill for any additional services provided beyond the basic contract on a time-and-materials basis as such services are rendered. Most contracts provide for an increase in the monthly base fee as the number of customer connections increases and generally include inflation adjustments. The majority of our MUD contracts are cancelable with 30 to 60 days prior notice by either party, but tend to last for long periods due to the close working relationships between the operators and the clients. No one district represents more than 5% of the overall revenue of this segment.

Impacts to Results of Operations 2009 and 2008

Utilities & Texas Utilities: Our utilities segments' results of operations are generally influenced by a variety of factors that are similar between the two segments and the industry in general. A more complete understanding of these factors can be gained by reviewing this section along with the Risk Factors section in our Form 10-K. As we review and discuss performance, the general areas of impact we evaluate are as follows:

† Growth Related: Growth in our utilities segments is generally characterized by the following drivers; 1) growth in the number of connections served within existing utility certified service areas, or 2) acquisition of new service areas. In our Utilities segment, our largest utility is our California utility which is a substantially built out system that does not generally see much change in connection count. The majority of our other utilities are in markets that experienced significant new home construction in the past, but, as experienced by the market generally, saw this rate of growth significantly decline throughout 2008 and the first two quarters of 2009. Growth through acquisitions was most significant in 2008 with the acquisition of a 4,000 connection wastewater utility system in Alabama in late January 2008.

† Rate Related: Each of our utilities will increase rates from time to time as allowed by the regulator or governing contract, to recover expenses and realize a return on invested capital. Rate cases can take months or years to impact results due to the time needed to prepare, present and ultimately receive approval from the regulator. In each of our utilities, we have a long-term rate strategy that matches our expectation for growth, regulatory change and demand. In 2008, we were actively pursuing rate increases in our California, Texas and Alabama utilities. Our Texas Utilities benefited in 2008 from a full year impact of a proposed rate increase from our 2007 Monarch rate filing, which was resolved through an all-party settlement in December 2008. The settlement resulted in an 8% reduction from proposed rates collected in 2008 and required us to refund an estimated $0.5 million which was recorded in the fourth quarter of 2008. We will implement a step-rate increase of 8% in March 2010 per the settlement. We also implemented rate increases in three smaller Texas utilities and reached all-party settlements with two of them in late 2008 and the third in the second quarter of 2009. In Alabama we have a contractual agreement with the local government over our Shelby County wastewater utility that provides us with the ability to request rate increases annually, pursuant to the terms of the contract. Accordingly, we requested and received an 8% increase in January 2008.

Additionally, we were actively working with our regulators in 2009 on additional rate cases that will impact 2009 and future periods. Increases that impacted the first two quarters include rate increases in California and Alabama. In California we worked with the California Public Utilities Commission ("CPUC") on our 2009 general rate case which was settled in the first quarter of 2009 for an 11% increase over our rates at the beginning of 2008. In Alabama, we applied for a rate increase under our Shelby County and Riverview wastewater utility contracts and received permission to raise rates approximately 14% and 4.5% respectively, in January 2009.

† Demand Related: Our utility results are largely dependent upon the sale and distribution of water, the amount of which is dependent on seasonal weather fluctuations, particularly during the summer months when water demand will vary greatly with rainfall and temperature levels. Not only does rainfall vary from season to season, but from year to year. The uniform rate design that regulators require for our utilities can result in unrecovered fixed costs and lower earnings during periods of lower than expected water use. This can occur during abnormal weather conditions, such as when summer temperatures are cooler than normal or during mandatory restrictions on water use because of drought. Also, demand related changes can occur as a result of conservation and socio-economic impacts. In 2008 and the first six months of 2009, we saw increased demand in Texas due to drought conditions. We saw lower demand at our California utility in 2008 and in the first two quarters of 2009, largely due to conservation and general economic conditions.

† Supply Related: The cost of water and related commodities is a major driver of our results. Utilities that purchase water are subject to changes in operations due to the amount and cost of that water. Purchased water supply changes are typically driven by longer-term climate issues such as extended drought but can also be driven by short-term maintenance needs. In the first quarter of 2009, we saw increased cost of purchased water in Texas and California but these dynamics were somewhat mitigated in the second quarter. In Texas, we purchased more water in the first quarter than the comparable period of 2008 due to more severe drought conditions in 2009 than in 2008. In the second quarter of 2009 our purchased water costs were similar to those of the second quarter of 2008. In California, our average unit cost of water increased in the first quarter of 2009 due to lower water levels in our main aquifers, resulting in a need to purchase more water, as well as the higher costs of imported water. In the second quarter of 2009 the amount of purchased water in California was less than that purchased in the comparable prior year period due to our customers' conservation efforts.

† Operation & Maintenance Related: Our operation and maintenance costs include fuel, power, labor, labor benefits, facility costs, and other ordinary costs of producing or treating water. These costs are impacted by compliance with environmental and health safety standards. They are also typically subject to inflation effects and while we can file for recovery after inflation effects are incurred in backward looking rate making jurisdictions, we often experience a lag between the time we incur these costs and when we receive the rate increase to cover these costs. In California, which is a forward looking rate making environment, we estimate the impact of inflation in our rate filings and must absorb any costs that are higher than our estimates.

† General & Administrative Related: Our general and administrative costs include expenses directly incurred by the segment such as management expense as well as costs for services performed by consolidated support functions that are then allocated to each segment. These support costs include information technology ("IT"), shared financial services, customer service center and environmental health and safety. In 2008, we made large investments in our consolidated support functions that have driven costs higher, but we now have a foundation upon which to drive sustainable continuous improvement into the organization. As the efficiencies of these investments take hold, we have targeted objectives to reduce the fixed costs of supporting our operations.

† Other: Other is reserved for unusual items that may impact results from time to time. Most significantly in the first six months of 2009, we saw an increase in costs in our Mississippi utility due to a refund of sales tax in the comparable prior period and a reduction in costs in Texas due to a write-off of assets in the comparable prior period.

O&M Services Segment: Our O&M Services segment results of operations are generally influenced by a variety of events. As we review and discuss performance, the general areas of impact we evaluate are as follows:

† Contract Growth: Growth is generally due to new contracts, additional project work under existing contracts and contract price increases. Our primary driver of contract growth in the first two quarters of 2009 was from expanding the scope of work provided to existing customers.

† Lost Work: Lost work is generally driven by lost contracts or a reduction in project work for existing contracts. The primary driver in the first two quarters of 2009 was reduced project work as well as the cancellation of two of our contracts in California in 2008 due in part to the financial under performance of the contracts.

† General & Administrative Related: Our general and administrative costs include expenses directly incurred by the segment such as management expense as well as costs for services performed by consolidated support functions that are then allocated to each segment. These support costs include IT, shared financial services, customer service center and environmental health and safety. In 2008, we made large investments in our consolidated support functions that have driven costs higher but we now have a foundation upon which to drive sustainable continuous improvement into the organization. As the efficiencies of these investments take hold, we have targeted objectives to reduce the fixed costs of supporting our operations.

† Other: Other is reserved for unusual items that may impact results from time to time, such as legal fees, fines or the elimination of certain non-core service offerings. Most significantly in the first six months of 2009, we eliminated certain non-core service offerings in Colorado and reduced legal costs versus the comparable prior period.

Texas MUD Services Segment: Our Texas MUD Services segment's results of operations are generally influenced by a variety of events. As we review and discuss performance, the general areas of impact we evaluate are as follows:

† Contract Growth: Growth is generally due to new contracts, additional project work and contract price increases. In the first two quarters of 2009, our growth was primarily driven by increases in service order work.

† Lost Work: Lost work is generally driven by lost contracts, reduction in project work or a reduction in ancillary services, such as new taps and inspection services for new home construction. In the first two quarters of 2009, lost work was primarily driven by lost contracts and the sale of our environmental testing laboratory.

† General & Administrative Related: Our general and administrative costs include expenses directly incurred by the segment such as management expense as well as costs for services performed by consolidated support

functions that are then allocated to each segment. These support costs include IT, shared financial services, customer service center and environmental health and safety. In 2008, we made large investments in our consolidated support functions that have driven costs higher, but we now have a foundation upon which to drive sustainable continuous improvement into the organization. As the efficiencies of these investments take hold, we have targeted objectives to reduce the fixed costs of supporting our operations.

† Other: Other is reserved for unusual items that may impact results from time to time.

Corporate Segment: Our corporate segment represents costs related to executive management, investor relations, human resources, general legal and insurance, certain IT functions that support all operations and public company needs, audit costs, and other expenses generally related to the parent organization. Most of the costs are general and administrative in nature and not subject to much variation. A portion of these costs are allocated to utilities in rate filings as allowed costs in rates. In the first two quarters of 2009, costs were primarily impacted by $10.6 million of expenses associated with our restatement of historical financial results and a charge of $8.0 million related to the write-off of Cornerstone assets, net of recoveries from vendors.

On occasion, we do have other costs that flow through the segment. In 2008, the expenses associated with the Cornerstone internal-use software development project were largely supported by the corporate segment. This project upgraded our core IT infrastructure such as phones, servers and communications links. In addition, as of January 1, 2008 we are operating on a single company-wide financial ledger system. In the fourth quarter of 2008, the remaining portions of the project were put on hold and certain portions of the project were eliminated and in May 2009, based on additional information, we determined that it was not probable that the implementation of the remaining uncompleted software modules would be completed which generated the write-off discussed above.

Acquisitions

Our financial position, results of operations and cash flows have been affected by our history of acquisitions. Our most recent significant acquisition, which affects the comparability of the historical financial condition and results of operations described in the MD&A, is the acquisition of a Birmingham, Alabama-based wastewater collection and treatment system that serves approximately 4,000 residential and commercial connections in a service area directly adjacent to our existing Shelby County collection and treatment system, acquired in late January 2008 ("Riverview").

Assets Held for Sale and Dispositions

During 2007, we committed to a plan to sell our wholesale water and wastewater operations in Texas. In December 2008, we completed the sale of our wholesale wastewater business for net cash proceeds of $2.2 million and a receivable of $0.6 million. The wastewater treatment plant sold represents a portion of the combined water and wastewater operations' assets and liabilities. We are uncertain whether we can consummate the sale of the remaining business during 2009; accordingly, the business activity of the water component is reflected in consolidated continuing operations in 2009.

We entered into an agreement to sell the assets of our Southwest Environmental Laboratories, Inc. subsidiary in 2009 for cash consideration of $0.5 million paid at close and up to an additional $0.75 million of consideration consisting of 25% of the buyer's quarterly aggregate invoice amounts subsequent to the sale. The sale closed on April 1, 2009.

In January 2009 we reached a settlement in eminent domain proceedings against our New Mexico utility, New Mexico Utilities Inc. ("NMUI"). On May 8, 2009 we received $53.9 million in cash at closing ($60.0 million settlement and $0.9 million net cash settlement primarily related to accounts receivable, less $7.0 million retained by the condemning entity in settlement of sewer treatment fees). We used $12.3 million of the net proceeds to pay down NMUI bonds and related accrued interest, and the remaining cash proceeds of $41.6 million were used to pay the unassumed liabilities of NMUI and to pay down our revolving credit facility.

RESULTS OF OPERATIONS

Three months ended June 30, 2009 Compared to 2008 (as restated)

Consolidated operating revenue from continuing operations decreased $1.8 million, or 3.2%, to $52.4 million for the three-month period ended June 30, 2009 from $54.2 million for the same period in the prior year. Consolidated operating expenses increased $9.2 million, or 17.5%, to $62.0 million for the three-month period ended June 30, 2009 from $52.8 million for the 2008 period. Resulting operating income decreased $11.0 million to a loss of $9.6 million for the three-month period ended June 30, 2009, from operating income of $1.4 million for the same period in the prior year. The operating loss for the quarter ended June 30, 2009 includes the impact to operating income of

$5.2 million of costs associated with the restatement of historical financial results, and $8.0 million of impairment of assets related to the Cornerstone project, as well as other items as described below. The operations of our New Mexico utility are not reflected in the following results of operations as it was sold in May 2009 and is, therefore, part of discontinued operations.

                                    Three Months Ended June 30,
                                               2008           Increase        Percent of Revenue
. . .