CALIFORNIA WATER SERVICE GROUP

Our physical properties consist of offices and water and wastewater facilities to accomplish the production, storage, treatment, and distribution of water and the collection, treatment, and discharge of wastewater. These properties are located in or near the geographic service areas listed above in Item 1, “Business—Geographical Service Areas and Number of Customer Connections at Year-end.” Our headquarters, which houses accounting, engineering, information systems, human resources, legal, purchasing, regulatory, water quality, and executive staff, is located in San Jose, California.

The real properties owned are held in fee simple title. Properties owned by Cal Water are subject to the lien of an Indenture of Mortgage and Deed of Trust dated October 1, 2025, October 22, 2024, May 11, 2021, June 11, 2019, November 22, 2010, and April 17, 2009 (the California Indenture), securing Cal Water’s First Mortgage Bonds, of which $1,305.0 million was outstanding at December 31, 2025. The California Indenture contains certain restrictions common to such types of instruments regarding the disposition of property and includes various covenants and restrictions. At December 31, 2025, our California utility was in compliance with the covenants of the California Indenture.

Cal Water owns 588 wells. There are 410 owned storage tanks with a capacity of 291 million gallons, 18 managed storage tanks with a capacity of 32 million gallons, and three surface water reservoirs with a capacity of 241 million gallons. Cal Water owns and operates six surface water treatment plants with a combined capacity of 46 million gallons per day. There are 6,803 miles of supply and distribution mains in the various owned and managed systems.

In the leased City of Hawthorne and City of Commerce systems that are operated under contract for municipalities or private companies, title to the various properties is held exclusively by the municipality or private company.

Hawaii Water owns 29 wells. There are 38 storage tanks with a storage capacity of 35.8 million gallons. There are 246 miles of supply and distribution mains. Hawaii Water operates seven wastewater treatment facilities with a combined capacity to process approximately 4.8 million gallons per day. There are 89.7 miles of sewer collection mains including force mains.

Washington Water owns 468 wells and manages 5 wells. There are 194 owned storage tanks with a storage capacity of 20.3 million gallons. There are 774 miles of supply and distribution mains. Washington Water operates one wastewater treatment plant with 1.3 miles of sewer collection mains.

New Mexico Water owns 29 wells. There are 29 storage tanks with a storage capacity of 11.0 million gallons. There are 210 miles of supply and distribution mains. New Mexico operates two wastewater treatment facilities with a combined capacity to process 0.62 million gallons per day. There are eight lift stations and 35 miles of sewer collection mains.

Texas Water, through its majority ownership of BVRT, owns and operates seven wastewater treatment plants. The plants have a treatment capacity of 1.175 million gallons per day.