California Water Service Group is the parent company of several water utility companies in the United States. Through its subsidiaries, the Group provides water utility and other related services in California, Washington, New Mexico, and Hawaii. The Company engages in the production, purchase, storage, treatment, testing, distribution, and sale of water for domestic, industrial, public, and irrigation uses, as well as for fire protection. California Water Service is also involved in the non-regulated water-related services, including operating water and waste water systems; providing operating and maintenance, meter reading, and billing services to private companies and municipalities; leasing communication antenna sites on its properties to telecommunication companies; billing of third-party insurance programs to its residential customers; operating recycled water systems; providing lab services; and selling surplus property.