Subsidiaries

California Water Service (Cal Water) is the largest subsidiary of the California Water Service Group. Cal Water is the largest investor-owned American water utility west of the Mississippi River and the third largest in the country. Formed in 1926, the San Jose-based company serves more than 492,600 customers through 28 Customer and Operations Centers throughout the state.

CONTACT INFORMATION

Customer Support Services
(Corporate headquarters)
1720 North First Street
San Jose, CA 95112-4508
(408) 367-8200
infoGO@calwater.com
www.calwater.com

Hawaii Water Service (Hawaii Water) was formed in 2003 with the acquisition of Ka’anapali Water Corporation. Hawaii Water’s Ka’anapali District serves 700 customers on Maui, including several large resorts and condominium complexes.

In 2008, Hawaii Water acquired the Pukalani Sewerage Treatment Works, a wastewater system serving 800 customers in Pukalani, located approximately 30 miles from Ka’anapali, along with Waikoloa Water Company, Waikoloa Sanitary Sewer Company, and Waikoloa Resort Utilities, which provide water and wastewater services to homes, condominiums, hotels, golf courses, and shops at Waikoloa Beach Resort and in Waikoloa Village, both on the Big Island of Hawaii. Also in 2008, Hawaii Water formed Kona Water Service Company on the Big Island to provide water and wastewater services to residences and businesses on the Kukio Resort.

In 2020, Hawaii Water expanded its service onto Oahu with the acquisition of Kalaeloa Water Company, a water and wastewater utility located in the growing Kapolei area of the City and County of Honolulu on Oahu.

Today, Hawaii Water serves 5,300 regulated accounts on Maui and Hawaii, many of which are large users.

CONTACT INFORMATION

68-1845 Waikoloa Road, Unit #216
Waikoloa, HI 96738
(808) 883-2046
(877) 886-7784 toll-free
www.hawaiiwaterservice.com

In 2002, New Mexico Water Service (New Mexico Water) was formed with the acquisition of the Rio Grande Utility Corporation, which added 2,265 water and 1,600 wastewater customers. The 2003 acquisition of National Utility Company added another 1,600 customers to the New Mexico subsidiary. Since then, New Mexico Water has made four additional acquisitions: Cypress Gardens Water Users, Independent Utility Company, Indian Hills Water Company, and Animas Valley Water System .

New Mexico Water now serves about 21,000 people through 10,500 water and wastewater service connections in its Rio Communities, Rio Del Oro, Meadow Lake, Indian Hills, Squaw Valley, Elephant Butte, Sandia Knolls, Juan Tomas, Cypress Gardens, and Morningstar systems. It is headquartered in Rio Communities, N.M., south of Albuquerque, and also has Customer Centers in Elephant Butte, Cedar Crest, and Farmington.

CONTACT INFORMATION

401 Horner St.
Rio Communities, NM 87002-6322
(505) 864-2218
www.newmexicowater.com

Texas Water Service (Texas Water) owns the majority of BVRT Utility Holding Company (BVRT), a Texas-based utility development company owning and operating five wastewater utilities serving growing communities outside of Austin and San Antonio. Austin and San Antonio are among the five fastest growing cities in the United States, and communities surrounding them are also experiencing high growth.

Texas Water Service initially invested funds to enable BVRT to continue to build wastewater infrastructure, and in 2021 converted its investment to equity, with the intention of continuing to invest in BVRT’s existing infrastructure and new developments. Texas Water has the right to eventually acquire all of BVRT’s growing portfolio of wastewater systems.

BVRT’s five wastewater utilities currently serve or are under contract to serve over 2,500 connections, with a potential total build-out of more than 61,000 connections. Texas Water, through its partnership with BVRT, is actively and aggressively pursuing additional opportunities to build and enhance wastewater infrastructure.

CONTACT INFORMATION

TWSC, Inc.
1912 E. 21st Street
Austin, TX 78722
www.twscinc.com