AMERICAN STATES WATER CO

AWR’s subsidiaries are subject to stringent environmental regulations. GSWC is required to comply with the safe drinking water standards established by the United States Environmental Protection Agency (“USEPA”) and the Division of Drinking Water (“DDW”), under the SWRCB. The USEPA regulates contaminants that may have adverse health effects that are known or likely to occur at levels of public health concern, and the regulation of which will provide a meaningful opportunity for health risk reduction. The DDW, acting on behalf of the USEPA, administers the USEPA’s program in California. Similar state agencies administer these rules in the other states in which Registrant operates.

GSWC currently tests its water supplies and water systems according to, among other things, requirements listed in the Federal Safe Drinking Water Act (“SDWA”). GSWC works proactively with third parties and governmental agencies to address issues relating to known contamination threatening GSWC water sources. GSWC also incurs operating costs for testing to determine the levels, if any, of the constituents in its sources of supply, and additional expense to treat contaminants in order to meet the federal and state maximum contaminant level standards and consumer demands. GSWC expects to incur additional capital costs as well as increased operating costs to maintain or improve the quality of water delivered to its customers in light of anticipated stress on water resources associated with watershed and aquifer pollution, drought impacts, as well as to meet future water quality standards and consumer expectations. The CPUC ratemaking process provides GSWC with the opportunity to recover prudently incurred capital and operating costs in future filings associated with achieving water quality standards. Management believes that such incurred and expected future costs should be authorized for recovery by the CPUC.

Drinking Water Notification Levels

In July 2018, DDW issued drinking water notification levels for certain fluorinated organic chemicals used to make certain fabrics and other materials, and used in various industrial processes. These chemicals were also present in certain fire suppression agents. These chemicals are referred to as PFAS. Notification levels are health-based advisory levels established for contaminants in drinking water for which maximum contaminant levels have not been established. The USEPA has also established health advisory levels for these compounds. Notification to consumers and stakeholders is required when the advisory levels or notification levels are exceeded. Assembly Bill 756, signed into law in July 2019 and effective in January 2020, requires, among other things, additional notifications by water systems when they detect levels of PFAS above response levels.

GSWC is in the process of collecting and analyzing samples for PFAS. GSWC has removed some wells from service, and expects to incur additional costs to treat impacted wells. GSWC has provided customers with information regarding PFAS detection and provides updated information via its website. In February 2020, DDW established new response levels for two of the PFAS compounds: 10 parts per trillion (“ppt”) for perfluorooctanoic acid (“PFOA”) and 40 ppt for perfluorooctanesulfonic acid (“PFOS”). In March 2021, DDW issued drinking-water notification and response levels of 0.5 parts per billion (“ppb”) and 5 ppb, respectively, for perfluorobutane sulfonic acid (“PFBS”). In June 2022, the USEPA issued interim updated drinking-water health advisories for PFOA and PFOS, and also issued final health advisories for PFBS and other compounds known as GenX chemicals. In October 2022, DDW issued drinking-water notification and response levels of 3 ppt and 20 ppt, respectively, for perfluorohexane sulfonic acid (“PFHxS”). Lower MCL levels are expected to be promulgated in 2024 and depending on how low the levels are set, these new requirements will likely increase GSWC’s water treatment and other operating costs.

Drinking Water Proposed Maximum Contaminant Levels

In March 2023, the USEPA proposed maximum contaminant levels (“MCLs”) for six PFAS compounds in drinking water. When finalized, the proposed regulation will require public water systems to monitor and treat water for these chemicals. It will also require water systems to notify its customers and reduce the levels if it exceeds the regulatory standards. The USEPA anticipates finalizing and adopting this rule in early 2024. Once the rule is finalized, water systems will be required to comply with the MCLs after a specified implementation period, which is currently anticipated to be three years from the rule-adoption date. These proposed MCLs, once finalized, are expected to increase GSWC’s water treatment and other operating costs. The CPUC has authorized GSWC to track incremental costs, including laboratory testing and monitoring costs, customer and public notification costs, and chemical and operating treatment costs, incurred as a result of PFAS contamination in a memorandum account to be filed with the CPUC for future recovery.

Matters Relating to Environmental Cleanup

GSWC has been involved in environmental remediation and cleanup at one of its plant sites that contained an underground storage tank which was used to store gasoline for its vehicles. This tank was removed from the ground in July 1990 along with the dispenser and ancillary piping. Since then, GSWC has been involved in various remediation activities at this site.

As of December 31, 2023, the total amount spent to clean up and remediate GSWC’s plant facility was approximately $6.3 million, of which $1.5 million has been paid by the State of California Underground Storage Tank Fund. Amounts paid by GSWC have been included in rate base and approved by the CPUC for recovery. As of December 31, 2023, GSWC has a regulatory asset and an accrued liability for the estimated remaining cost of$1.3 million to complete the cleanup at the site. The estimate includes costs for continued activities of groundwater cleanup and monitoring, future soil treatment, and site closure related activities. The ultimate cost may vary as there are many unknowns in remediation of underground gasoline spills and this is an estimate based on currently available information. Management also believes it is probable that the estimated additional costs will continue to be approved in rate base by the CPUC.

Lead and Copper Rule Revisions

On December 16, 2021, the USEPA announced the Lead and Copper Rule Revisions under an executive order with a compliance date of October 16, 2024. Additionally, the USEPA announced its intention to develop a new proposed rule, the Lead and Copper Rule Improvements (“LCRI”) that will further strengthen the regulatory framework prior to the October 2024 compliance date. There are still many unknowns regarding the implementation of the rule. The details of the requirements will be better understood over the next year once the LCRI is published and a final rule is approved.

Matters Relating to Military Base Contracts

Each of the ASUS’s subsidiaries is responsible for testing the water and wastewater systems on the military bases on which it operates in accordance with applicable law.

Each of the ASUS’s subsidiaries has the right to seek an equitable adjustment to its contract in the event that there are changes in environmental laws, a change in the quality of water used in providing water service or wastewater discharged by the U.S. government, or contamination of the air or soil not caused by the fault or negligence of ASUS’s Subsidiary. These changes can impact operations and maintenance and renewal and replacement costs under the contracts. The U.S. government is responsible for environmental contamination due to its fault or negligence and for environmental contamination that occurred prior to the execution of a contract.

Security Issues

We have physical and information security policies throughout our operations. Training on these matters begins during employee orientation and is ongoing through a series of training courses in addition to periodic, unannounced training exercises. We collaborate with various agencies, associations and third parties regarding information on possible threats and security measures for our operations. Risk assessments are conducted periodically to evaluate the effectiveness of existing security controls. These assessments provide areas for additional security focus, new controls, and policy changes.

Both GSWC and BVES have security systems and infrastructure in place intended to prevent unlawful intrusion, service disruption and cyber-attacks. GSWC and BVES utilize a variety of physical security measures to protect their facilities. These measures consider advances in security and emergency preparedness technology and relevant industry developments in developing their respective capital-improvement plans, and both intend to seek approval of the CPUC to recover any additional costs that either may incur in enhancing the security, reliability and resiliency of their utility systems.

On October 23, 2018, America’s Water Infrastructure Act (“AWIA”) became law. GSWC must now conduct additional risk and resilience assessments and develop emergency response plans for each of its water systems. These assessments and plans include natural hazards as well as malevolent acts. The first such assessments were completed in 2020. They will be reviewed and must be resubmitted every five years.

ASUS’s subsidiaries operate facilities within the boundaries of military bases, which provide limited access to the general public. To further enhance security, in prior years, certain upgrades were completed at various military bases through contract modifications funded by the U.S. government.

Registrant has evaluated its cyber-security systems and continues to address identified areas of improvement with respect to U.S. government regulations regarding cyber-security of government contractors. These improvements include the physical security at all of the office and employee facilities it operates.

Despite its efforts, Registrant cannot guarantee that intrusions, cybersecurity incident or other attacks will not cause water, wastewater or electric system problems, disrupt service to customers, compromise important data or systems or result in unintended release of customer or employee information.

Water Supply

GSWC

During 2023, GSWC delivered approximately 54.3 million hundred cubic feet (“ccf”) of water to its customers, which is an average of about 342 acre-feet per day or 111 million gallons per day (an acre-foot is approximately 435.6 ccf or 326,000 gallons). Approximately 53% of GSWC’s supply came from groundwater produced from wells situated throughout GSWC’s service areas. GSWC supplemented its groundwater production with wholesale purchases from MWD member agencies and regional water suppliers (roughly 43% of total demand) and with authorized diversions from rivers (roughly 4%) under agreements with the United States Bureau of Reclamation and the Sacramento Municipal Utility District. GSWC also utilizes recycled water supplies to serve recycled water customers in several service areas. GSWC continually assesses its water rights and groundwater storage assets to maximize use of lower cost groundwater sources where available.

Groundwater

GSWC has a diverse water supply portfolio which includes adjudicated groundwater rights, surface water rights, and a number of unadjudicated water rights to help meet supply requirements. The productivity of GSWC’s groundwater resources varies from year to year depending upon a variety of factors, including natural replenishment from snow-melt or rainfall, the availability of imported replenishment water, the amount of water previously stored in groundwater basins, natural or man-made contamination, legal production limitations, and the amount and seasonality of water use by GSWC’s customers and others. GSWC actively participates in efforts to protect groundwater basins from over-use and from contamination. In some periods, these efforts may require reductions in groundwater pumping and increased reliance on alternative water resources. GSWC also participates in the implementation of California’s Sustainable Groundwater Management Act.

From time to time, GSWC may purchase or temporarily use water rights from others for delivery to customers. GSWC has contracts to purchase water or water rights for an aggregate amount of $2.7 million as of December 31, 2023. Included in the $2.7 million is a remaining commitment of $1.3 million under an agreement with the City of Claremont to lease water rights that were ascribed to the City as part of the Six Basins adjudication. The initial term of the agreement expires in 2028. GSWC may exercise an option to renew this agreement for ten additional years. The remaining $1.4 million is for commitments for purchased water with other third parties, which expire through 2038.

Imported Water

GSWC also manages a portfolio of water supply arrangements with water wholesalers who may import water from outside the immediate service area. For example, GSWC has contracts with various governmental entities and other parties to purchase water through a total of 59 connections for distribution to customers, in addition to numerous emergency connections. MWD is a public agency organized and managed to provide a supplemental, imported supply to its member public agencies. There are 26 such member agencies, consisting of 14 cities, 11 municipal water districts and one county water authority. GSWC has 45 connections to MWD’s water distribution facilities and those of member agencies. GSWC purchases MWD water through six separate member agencies aggregating 43,810 acre-feet annually. MWD sources its supplies from Northern California via the State Water Project and the Colorado River through the Colorado River Aqueduct, which it owns and operates, and from local programs and transfer arrangements.

MWD currently has supply levels of 1.14 million acre-feet (“MAF”) with annual demands of approximately 1.54 MAF resulting in a supply gap of 399 thousand acre feet. MWD has available access to store more than 1.65 MAF of water in Lake Mead as part of an intentionally created surplus program developed under a 2007 Interim Shortage agreement and is available for use during dry years. In addition, MWD, along with the seven other Basin states which use water from the Colorado River, developed and agreed to the Drought Contingency Plan in 2019 where each lower Basin state which diverts water from the Colorado River below Lees Ferry agrees to store defined amounts of water in Lake Mead to prevent both Lake Mead and Lake Powell from reaching critically low levels. California is a lower Basin state. On December 1, 2023, the Department of Water Resources set the initial allocation for the water year to 10% due to the possibility that 2024 may be a dry year.

Drought Impact

In May 2018, the California Legislature passed two bills that provide a framework for long-term water-use efficiency standards and drought planning and resiliency. The initial steps in implementation of this legislation have been laid out in a summary document by the California Department of Water Resources (“DWR”) and SWRCB. A notable milestone is the establishment of an indoor water use standard of 55 gallons per capita per day (“gpcd”) until 2025. Legislation signed by the Governor into law in September 2022 has set more stringent indoor standard targets than initially set forth in the 2018 legislation. The indoor standard will now be set at 47 gpcd in 2025 and then reduced to 42 gpcd in 2030 (previously had been set at 52.5 gpcd and 50 gpcd, respectively). The SWRCB released a draft of the Conservation Regulation in mid-year 2023.

The SWRCB is expected to consider the adoption of the regulation by October 2024. Water suppliers including GSWC have provided extensive comments to date on the draft regulation and will work with state agencies on the final regulation and its implementation.

California’s recent period of multi-year drought has resulted in reduced recharge to the state’s groundwater basins. GSWC utilizes groundwater from numerous groundwater basins throughout the state. Several of these basins, especially smaller basins, experienced lower groundwater levels because of the drought. Several of GSWC’s service areas rely on groundwater as their only source of supply. Given the critical nature of the groundwater levels in California’s Central Coast area, GSWC implemented mandatory water restrictions in certain service areas in accordance with CPUC procedures. In the event of water supply shortages from the locally available supply, GSWC would need to transport additional water from other areas, increasing the cost of water supply.

After a very wet 2023, California could still potentially be entering into a dry 2024 even with the recent storm events in California in January and February 2024. Since the start of the water year, both the Sierra snowpack and precipitation has been below normal. The southern Sierra snowpack was at 52% of normal and the 5-station precipitation index was at 71% of normal on February 12, 2024. However, a series of atmospheric storm events in late January and early February are providing a promising outlook to the State’s supply conditions. As of February 13, 2024, the U.S. Drought Monitor reported that none of California was in drought with only 7% identified as “abnormally dry” as compared to a year ago when 85% was in “moderate drought.”

Prolonged drought conditions also exist on the Colorado River System, which is experiencing historically low reservoir levels in Lake Mead and Lake Powell. Urgent action to reduce water demand on the lower river by 2 to 4 million acre feet annually has been requested by the US Bureau of Reclamation (the “Bureau”). In December 2023, several California water agencies signed agreements with the Bureau to conserve up to 643,000 Acre-feet of water in Lake Mead through 2025. This includes contracts with the Coachella Valley Water District, the Quechan Indian Tribe and the Imperial Irrigation District. Additional contracts are expected to be signed by Palo Verde Irrigation District in cooperation with MWD in 2024. GSWC will continue to monitor developments related to the Colorado River System and assess its impact on GSWC.

Military Base Operations

The U.S. government is responsible for providing the source of supply for all water on each of the bases served by ASUS’s subsidiaries at no cost to ASUS’s subsidiaries. Once received from the U.S. government, ASUS’s subsidiaries are responsible for ensuring the continued compliance of the provided source of supply with all federal, state and local regulations. Furthermore, ASUS’s subsidiaries are responsible for ensuring compliance with the reduction and/or removal of all constituents required under its wastewater treatment plant operating permits. ASUS works closely with state regulators and industry associations to stay current with emergent issues and proactively addresses any change in wastewater treatment regulation to ensure permit compliance.

New Accounting Pronouncements

Registrant is subject to newly issued accounting requirements as well as changes in existing requirements issued by the Financial Accounting Standards Board. See Note 1 of Notes to Consolidated Financial Statements.