The project involves the installation of approximately 3,100 feet of new 8-inch water main in central Selma. These upgrades are designed to strengthen the local water system and provide long-term reliability for the Selma community.

“Our top priority is providing safe, clean, reliable drinking water to our customers' homes and businesses, and this upgrade will help us continue to do that,” said Mike Andrada, Cal Water's Selma Operations Manager.

The project started this week and will take approximately three months to complete. Crews will work 7:30 a.m. to 4 p.m., Monday through Friday along Merced, Wright, Logan, Lee, and Stillman streets.

The main replacement project is part of Cal Water's broader commitment to proactive, ongoing maintenance and upgrades that support safe, high-quality drinking water. As part of these efforts, the Selma District also recently brought a well that was offline for three years back into service to help meet peak demands for water this summer.

To restore the well, the district added granular-activated carbon (GAC) treatment, one of several treatment methods that Cal Water uses to clean the water to make it safe to drink. It's a cost-effective, environmentally safe treatment method that removes contaminants from water.

"Bringing this well back online definitely helps us support Selma's every day and emergency water needs," Andrada said. "Restoring this well is an important addition for the community."

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"Our crews take a proactive approach in our water infrastructure improvements because that allows us to continue providing a reliable source of drinking water for our customers' every day and emergency needs," said Tavis Beynon, Willows District Manager. "We're proud to serve our community-24/7."

Crews are working on:

• West Oak Street between South Shasta Street and South Tehama Street
• South Butte Street between West Oak Street and West Ash Street
• West Laurel Street between South Butte Street and South Tehama Street

Work is happening Monday through Friday from 7 a.m. to 5 p.m. Crews are working to minimize any traffic disruptions. The project is expected to take about three months, beginning this month and finishing by the end of November. Temporary asphalt will be applied until permanent paving is completed, which can be up to 30 days after project completion.

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With summer in full swing, now is a perfect time to think about how we can all do our part to conserve water. Every drop saved helps build a more resilient water future for our communities, especially as we navigate the impacts caused by our changing climate. For California Water Service (Cal Water), this means conservation is not a reactive measure, but rather a foundational pillar of our commitment to provide safe, reliable water to more than two million Californians each day.

Cal Water is here to help both residential and commercial customers save water every day through our conservation programs, especially during summer-when water use and demand can spike. From our Smart Landscape Tune-Up program to residential conservation kits, we provide tools and information to support our customers' conservation goals. We also engage directly with the communities we serve through events such as our Plant Local Adopt-A-Plant pop-ups, where we share valuable water-saving knowledge and highlight programs like Lawn-to-Garden, a turf replacement rebate-ideal for reducing summer watering needs. Direct interactions with our customers are crucial for us to understand their unique needs and provide the resources necessary to help them make water-wise decisions.

Investing in conservation and rebate programs is part of our core strategy in achieving climate resiliency. In 2024, we invested over $2 million to directly benefit our customers through programs such as indoor and outdoor rebates, conservation kits, and our Smart Landscape Tune-Up program. Through these programs, we estimate customers will save more than 450 million gallons over the lifetime of the devices and support provided. This is a testament to all of our communities working together to save water every day.

While our customers' summer conservation efforts are vital, Cal Water is also working diligently behind the scenes to support the reliable delivery of safe, clean water and implement water-wise internal processes-key efforts amidst our unpredictable climate.

• Diversifying Water Sources: We're committed to increasing the use of recycled water in our operations, aiming for no less than 5% of total water supply by 2035. In 2024, we reported 2.5% usage of recycled water for landscaping, irrigation, and industrial uses.
• Meeting State Targets: We completed our compliance assessment in 2024 and are implementing our plan to meet water-use targets mandated by the State of California for our communities, through the continuation and expansion of our ongoing conservation programs.
• Investing in Resilient Infrastructure: We're also continuously investing in infrastructure and reducing water loss within our own systems. In 2024, Cal Water replaced 36 miles of water main across our districts. Additionally, our robust asset management, proactive leak detection, and repair efforts help make every drop count.

These are just some of our efforts to mitigate the effects of climate change and build a sustainable water future for California. Our continued investment in climate solutions helps protect our planet and positions Cal Water to keep delivering safe, clean, reliable tap water for years to come.

To learn more, visit calwatergroup.com/sustainability.

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"Infrastructure improvements like these are crucial. Not only do they help us continue to deliver a reliable source of water for everyday needs, but they also allow us to keep supporting our firefighters as they protect our communities," said Ross Moilan, Bayshore District Manager. "For Cal Water, it's all about providing quality, service, and value to the communities we serve."

The project is expected to take three months, beginning in August and culminating by the end of November. Work will take place south of Mills Montessori School, Monday through Friday from 7 a.m. to 5 p.m. Construction will begin near the intersection of Ridgeview Court and La Montagne Place, continue through the apartment complex nearby, then toward the intersection of Hemlock Avenue and Lincoln Street, and continue north until reaching Hillside Boulevard. Crews will work to minimize impact to traffic and will notify customers when there are any traffic disruptions. Temporary asphalt will be applied until permanent paving is completed, which can be up to 30 days after project completion.

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As part of its mission to provide sustainable water utility services, Cal Water has signed a 20-year power purchase agreement with EDPR NA Distributed Generation LLC (EDPR NA DG) for a 2.35-megawatt direct current (MWdc) / 1.75-megawatt alternating current (MWac) solar photovoltaic array to be installed at Cal Water's Northeast Bakersfield Treatment Plant. The partnership between Cal Water, the largest subsidiary of California Water Service Group (Group), and EDPR NA DG, a subsidiary of EDP Renewables North America LLC, is designed to reduce the water utility's long-term environmental footprint while providing lower-cost energy and helping to keep water costs affordable.

Cal Water and EDPR NA DG expect the system to generate about 3,800 megawatt-hours of renewable energy annually. The renewable energy generated by the solar array is anticipated to reduce grid energy costs by about $1.7 million over the term of the agreement, based on current electric rates for customers in the Bakersfield District, one of Cal Water's largest service areas.

"At Cal Water, we are dedicated to being a responsible environmental steward, and partnering with EDPR NA DG will help us reduce traditional power costs, reach our science-aligned greenhouse gas emissions reduction targets, and increase sustainability," said Marty Kropelnicki, Group Chairman and CEO. "We look forward to bringing this new onsite solar array online, which is an important step for us to continue providing safe, reliable, and affordable water service to our customers for decades to come."

"California is a national clean energy leader because of organizations like Cal Water, which prioritize supporting renewable energy investments," said João Barreto, EDPR NA DG CEO. "This partnership demonstrates the ever-increasing convergence of the water-energy nexus, and the importance of investment in vital infrastructure throughout California."

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"This important water system upgrade will help us continue to provide a reliable supply of high-quality water for customers' every day and emergency needs in Stockton," said Craig Stevens, Stockton District Manager. "Our infrastructure improvements are all about providing quality, service, and value to the communities we serve."

This single-phase project is expected to be completed by January 2026, weather permitting. Crews will work Monday through Friday, 7 a.m. to 4 p.m., starting near the intersection of East Stevenson Avenue and Newton Road, and continuing east of Highway 99 to Wilcox Road. To help avoid road closures and minimize impact to traffic, crews will be working on either side of Highway 99 to install the water main horizontally underneath the freeway.

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"This year, nine of our 13 recipients are the first members of their families to attend college. We applaud all of the recipients for their academic drive, as well as their commitment to their communities," said Marty Kropelnicki, Cal Water Chairman and CEO. "We are pleased that they shared their stories with us and have given us the opportunity to invest in their education."

From almost 500 applications, four students were each awarded a $10,000 grand-prize scholarship based on academic achievement, community service, and financial need, while seven others received $5,000 scholarships and two others received $2,500 awards. The top scholarship winners include:

• Princess A., of Bakersfield, Calif., a first-generation college student who will study molecular and cellular biology at the University of California, Berkeley, and aspires to become a physician. Princess hopes to return to Bakersfield to open a clinic where she can provide accessible, compassionate care to patients in a medically underserved area.
• Robert B., of Redondo Beach, Calif., who was accepted to Princeton University, where he will pursue a bachelor's degree in applied and computational mathematics and economics, as well as study political science. After witnessing firsthand how legislative policy decisions impacted his family's ability to access healthcare and financial support when his father was in a 107-day coma, Robert's long-term goal is to improve decision-making in healthcare policy and educational equity as a U.S. Senator.
• Kassandra G., of Kernville, Calif., who will study biochemistry at the University of Colorado, Boulder. She hopes to become a crime scene investigator to help find justice for those who have lost someone to violent crime. Kassandra is the first in her family to attend college.
• Chloe S., of Visalia, Calif., who is a first-generation college student, has been accepted to the University of Pennsylvania, where she will study economics, before heading to law school. Her goal is to become a sports contract lawyer and represent the Las Vegas Raiders, a team that has inspired her since childhood.

The remaining scholarship recipients include:

• Priscilla D., of Bakersfield, Calif., a first-generation college student who is attending Bakersfield College to become a radiologic technologist.
• Maaz D., of Hawthorne, Calif., the first in his family to pursue higher education, who is in his second year at the University of California, Berkeley, where he is studying electrical engineering and computer science.
• Daniel D., of Rancho Palos Verdes, Calif., a third-year college student at the University of California, Los Angeles, where he is studying psychology. He hopes to become a doctor in clinical psychology to help people through difficult life circumstances.
• Landon D., of Graham, Wash., who is entering his second year double-majoring in economics and political science at Loyola Marymount University. He wants to be a voice for marginalized groups and help improve communities.
• Gustavo I., of Bakersfield, Calif., who will head to the University of California, Berkeley, and study mechanical engineering as a first-generation college student. He aspires to work at NASA and earn an advanced degree in aeronautics and astronautics and pave the way for asteroid mining.
• Riley T., of Waikoloa, Hawaii, a second-year college student at the University of Hawaii at Manoa. She hopes to complete a master's degree in social work and one day open her own practice in Hawaii to work toward improved mental health in her community.
• Matias V., of Carson, Calif., who will study computer science and engineering at the University of California, Irvine. He is the first member of his family to attend college and aspires to improve the percentage of Hispanics working in engineering.
• Cooper W., of Farmington, N.M., a second-year college student studying industrial technologies at Oklahoma Panhandle State University. He is a member of the university's rodeo team and hopes his studies will help him with ranching and community services. He is a first-generation college student.
• Ashley Z., of Redwood City, Calif., who will be the first member of her family to attend college when she heads to Santa Clara University this fall to study public health sciences. Having experienced what it is like to be in the hospital with family members diagnosed with cancer, she hopes to pursue a career in surgical oncology.

The annual scholarships are part of Group's stockholder-funded philanthropic giving program and do not affect customers' rates. The program is administered by Scholarship America, a 501(c)(3) non-profit organization.

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"The average person does not think about the fact that we need power to provide water," said Kellen Boyce, Operations Manager of Cal Water's Kern River Valley District, which provides safe, clean, reliable water utility services to about 5,200 people through 4,200 service connections in the valley. "We go to great lengths to create redundancy in our system including backup power, so that in the event of a power outage or shutoff, we're prepared and can help better provide water to our customers."

Installing generators at key facilities and positioning portable, backup generators is just one of the many ways that Cal Water proactively prioritizes emergency preparedness to help maintain reliable service during natural disasters or challenges such as power outages or shutoffs. With shutoffs expected to continue over the summer in Lake Isabella, Cal Water has spent tens of thousands of dollars and many hours filling 23 generators with diesel to keep water flowing to the homes of its Lake Isabella customers.

Also, during these power shutoffs, Cal Water has asked its customers to conserve water any time there is one in effect. When power has been shut off, Cal Water asks customers in the area to turn off or limit irrigation and use only as much water as absolutely needed indoors for health and safety purposes. Customers' conservation efforts will help maintain sufficient resources for fire protection and still meet necessary customer needs and help prevent potential interruptions in water service, Boyce said.

“We're working all day and night so we can keep water flowing for our customers, our neighbors, and even our own families,” Boyce said.

Other ways that Cal Water takes action to help keep water service reliable and support firefighting efforts include:

• Collaborative planning and training through annual Emergency Operations Center exercises.
• Proactively upgrading infrastructure-water mains, pump stations, hydrants, storage tanks, etc.
• Finding ways to get water from its facilities to where it's needed.
• Managing vegetation around its facilities for fire prevention.
• Specialized training for employees who can quickly support water system needs during local emergencies.
• Providing annual firefighter grants that support the purchase of life-saving equipment and training for first responders.
• Inspecting and maintaining hydrants regularly.
• Securing mutual support agreements with neighboring utilities and cities to coordinate support during emergencies.

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Under the agreement, upon completion of the community's wastewater treatment plant, Cal Water will begin serving approximately 500 wastewater connections initially being served by the City of Hesperia. At full buildout of the development, Silverwood is expected to have more than 15,000 customer connections. Cal Water will take ownership of the wastewater collection system and recycled water distribution system in phases as they are completed and ready to accommodate new connections.

"We look forward to our partnership with DMB Development to serve the new Silverwood community and help sustain the environment," said Martin A. Kropelnicki, Cal Water Chairman and Chief Executive Officer. "As families seek to put down roots in this area, we are dedicated to helping improve their quality of life by focusing on the same high standard of quality, service, and value that we provide to customers throughout our service areas."

The phased transfers of ownership are subject to satisfactory closing conditions. The Silverwood system will become a new Cal Water district, with oversight from the California Public Utilities Commission.

This news release contains forward-looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 (PSLRA). The forward-looking statements are intended to qualify under provisions of the federal securities laws for "safe harbor" treatment established by the PSLRA. Forward-looking statements in this news release are based on currently available information, expectations, estimates, assumptions and projections, and our management's beliefs, assumptions, judgments and expectations about us, the water utility industry and general economic conditions. These statements are not statements of historical fact. When used in our documents, statements that are not historical in nature, including words like will, would, expects, intends, plans, believes, may, could, estimates, assumes, anticipates, projects, progress, predicts, hopes, targets, forecasts, should, seeks, commits or variations of these words or similar expressions are intended to identify forward-looking statements. Examples of forward-looking statements in this news release include, but are not limited to, statements describing the anticipated transfer of ownership pursuant to, expected benefits resulting from, and closing conditions related to the Silverwood acquisition. Forward-looking statements are not guarantees of future performance. They are based on numerous assumptions that we believe are reasonable but are subject to uncertainty and risks. Actual results or outcomes may vary materially from what is contained in a forward-looking statement. Factors that may cause actual results or outcomes to be different than those expected or anticipated include, but are not limited to: ability to integrate the business and operate the Silverwood systems in an effective and accretive manner; the outcome and timeliness of regulatory commissions' actions concerning rate relief and other matters, including with respect to the 2024 California GRC filing; changes in regulatory commissions' policies and procedures; our ability to invest or apply the proceeds from the issuance of common stock in an accretive manner; federal governmental and state regulatory commissions' decisions; consequences of eminent domain actions relating to our water systems; increased risk of inverse condemnation losses as a result of the impact of weather, climate change, and natural disasters; our ability to renew leases to operate water systems owned by others on beneficial terms; changes in California State Water Resources Control Board water quality standards; changes in environmental compliance and water quality requirements, such as the EPA's finalization of a National Primary Drinking Water Regulation in 2024; electric power interruptions; housing and customer growth; the impact of opposition to rate increases; our ability to recover costs; availability of water supplies; issues with the implementation, maintenance or security of our information technology systems; civil disturbances or terrorist threats or acts; the adequacy of our efforts to mitigate physical and cyber security risks and threats; the ability of our ERM processes to identify or address risks adequately; labor relations matters as we negotiate with the unions; changes in customer water use patterns and the effects on conservation, including as a result of drought conditions; our ability to complete, in a timely manner or at all, successfully integrate, and achieve anticipated benefits from acquisitions; the impact of weather, climate change, natural disasters, including wildfires and landslides, and actual or threatened public health emergencies on our operations, water quality, water availability, water sales, and operating results and the adequacy of our emergency preparedness; restrictive covenants in or changes to the credit ratings on our current or future debt that could increase our financing costs or affect our ability to borrow, make payments on debt, or pay dividends; risks associated with expanding our business and operations geographically; the impact of stagnating or worsening business and economic conditions, including inflationary pressures, general economic slowdown, or a recession, changes in tariff policy and uncertainty regarding tariffs and other retaliatory trade measures, the interest rate environment, changes in monetary policy, adverse macroeconomic conditions as a result of geopolitical conflicts, and the prospect of a shutdown of the U.S. federal government; the impact of market conditions and volatility on unrealized gains or losses on our non-qualified benefit plan investments and our operating results; the impact of weather and timing of meter reads on our accrued unbilled revenue; the impact of evolving legal and regulatory requirements; the impact of the evolving U.S. political environment that has led to, in some cases, legal challenges and uncertainty around the funding, functioning, and policy priorities of U.S. federal regulatory agencies and the status of current and future regulations; and other risks and unforeseen events described in our most recent Annual Report on Form 10-K and our other SEC filings. In light of these risks, uncertainties and assumptions, investors are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date of this news release. We are not under any obligation, and we expressly disclaim any obligation to update or alter any forward-looking statements, whether as a result of new information, future events, or otherwise.

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"This important water system upgrade will help us continue to provide a reliable supply of high-quality water both for our neighbors in Oroville and for fire protection in emergencies," said Loni Lind, Oroville Local Manager. "Our infrastructure improvements are all about providing quality, service, and value to the communities we serve."

The well will be built in two phases, the first of which is scheduled to begin on Monday, June 16, and will include drilling and testing the new well. This work is expected to take approximately three months, with crews typically working 8 a.m. to 6 p.m. Monday through Friday. There will be a period of round-the-clock drilling required to preserve the integrity of the well hole. This critical infrastructure work will take place at the intersection of Bird Street and Feather River Boulevard. Crews will work hard to minimize any traffic disruptions and will be installing sound walls to keep noise to a minimum as well.

The second phase will include construction of distribution pipes and a new pump house, along with installation of fencing and landscaping. There will be a delay between the two phases to accommodate planning and permitting, but Cal Water will provide updates to the community on the schedule for completion. Crews will also help improve the curb appeal of this property by landscaping with low-water-use plants, paving, and gravel to eliminate weeds.

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