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Private company

California Water Service

Logo: The logo is from the following website: www .calwatergroup .com /about-us /subsidiaries /, Non-free logo, via Wikipedia3

Utility company in California

California Water Service, commonly known as Cal Water, is an American company providing drinking water and wastewater services to a number of regions within the state of California. It was founded in 1926 and is based in San Jose, California, and provides service across multiple local districts, reaching more than 484,900 customers.2 It is part of California Water Service Group.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1926Founded1

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California Water Service at work in Chico-L1001065
Photo: Frank Schulenburg, CC BY-SA 4.0, via Wikimedia Commons4

California Water Service, commonly known as Cal Water, is an American company providing drinking water and wastewater services to a number of regions within the state of California. It was founded in 1926 and is based in San Jose, California, and provides service across multiple local districts, reaching more than 484,900 customers.2

Corporate structure

California Water Service is part of a group headed by California Water Service Group. 8 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

  • California Water Service Group San Jose
    • California Water Service San Jose
    • CWS Utility Services Subsidiary · California, United States
    • Hawaii Water Service Company, Inc. Subsidiary · Hawaii, United States
    • HWS Utility Services LLC Subsidiary · Hawaii, United States
    • New Mexico Water Service Company Subsidiary · New Mexico, United States
    • TWSC, Inc. Subsidiary · Texas, United States
    • Washington Water Service Company Subsidiary · Washington, United States

Built from subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Subsidiaries and ownership

Parent company

From Wikidata.1

Timeline

  1. 1997Acquired Acquired by California Water Service Group1
  2. 1926Founded Founded1

Funding

Where the company's money came from, by calendar year: private offerings filed with the SEC, federal grants, loans, contracts and other assistance from USAspending.gov, and PPP loans from the SBA. Each bar links to the records below.

Money received by year$24.4M 2009–2025
Money received by yearMoney received by year, 2009–2025: $24.4M in all. Federal grants $235.2K; Federal contracts $24.1M.$0$2M$4M$6M2009 · Federal contracts: $15.8K20092010 · Federal contracts: $125.9K2011 · Federal contracts: $17.6K20112012 · Federal contracts: $470.9K2013 · Federal contracts: $18.8K20132014 · Federal contracts: $25.6K2015 · Federal contracts: $489.7K20152016 · Federal contracts: $474.9K2017 · Federal contracts: $17.1K20172018 · Federal contracts: $13.4K2019 · Federal contracts: $2.5M20192020 · Federal contracts: $1.8M2021 · Federal contracts: $3.4M20212022 · Federal contracts: $2.2M2023 · Federal grants: $235.2K2023 · Federal contracts: $4.3M20232024 · Federal contracts: $4.7M2025 · Federal contracts: $3.6M2025
Without federal contracts$235.2K 2023–2023
Without federal contractsWithout federal contracts, 2023–2023: $235.2K in all. Federal grants $235.2K.$0$100K$200K$300K2023 · Federal grants: $235.2K2023
Figures by year
YearFederal grantsFederal contractsTotal
2025–$3.6M$3.6M
2024–$4.7M$4.7M
2023$235.2K$4.3M$4.5M
2022–$2.2M$2.2M
2021–$3.4M$3.4M
2020–$1.8M$1.8M
2019–$2.5M$2.5M
2018–$13.4K$13.4K
2017–$17.1K$17.1K
2016–$474.9K$474.9K
2015–$489.7K$489.7K
2014–$25.6K$25.6K
2013–$18.8K$18.8K
2012–$470.9K$470.9K
2011–$17.6K$17.6K
2010–$125.9K$125.9K
2009–$15.8K$15.8K

Federal awards

Obligated amounts from USAspending.gov5, by calendar year, 2009–2025, for its registration. Obligations are what agencies committed, not always what was paid out. Contracts pay for goods and services; grants, loans and direct payments are assistance. Loans are charted at the face value of the loans listed here. An award’s amount below is its lifetime total, and some began before the years charted.

Largest grants

  1. Aug 15, 2023$235.2K from Bureau of Reclamation: Watersmart (Sustain And Manage America’S Resources For Tomorrow)6 To CALIFORNIA WATER SERVICE CO Award R23AP00453

Largest contracts

  1. Feb 1, 2019$22.7M from Defense Logistics Agency: Igf::ct::igf utility service contract for privatization of the water distribution system infrastructure at travis afb, ca7 To CALIFORNIA WATER SERVICE CO Award SP060016C8315
  2. Feb 26, 2015$474.5K from Public Buildings Service: Igf::ot::igf ca water service fy158 To CALIFORNIA WATER SERVICE CO Award GS09P15KSC0023
  3. Apr 1, 2005$460.6K from Public Buildings Service: Water service to usgs menlo park, bell fsc (bell ca), stockton fb (stockton ca)9 To CALIFORNIA WATER SERVICE CO Award GS09P05KSM0064
  4. May 29, 2010$120.8K from Bureau of Land Management: Creekside terrace fort ord water system10 To CALIFORNIA WATER SERVICE CO Award INL10PX03240
  5. Sep 1, 2015$107.9K from Defense Contract Management Agency: Igf::ot::igf utility water service11 To CALIFORNIA WATER SERVICE CO Award S5105A15P0020

Sources

The numbers on this page point here. Each one links to the record it came from.

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