California Water Service, commonly known as Cal Water, is a leading provider of water utility services in the United States. Headquartered in San Jose, California, the company operates across several major regions, including the San Francisco Bay Area, Southern California, and the Central Coast. Founded in 1926, Cal Water has established itself as a key player in the water industry, focusing on delivering high-quality water and wastewater services to residential and commercial customers. With a commitment to sustainability and innovation, Cal Water offers a range of core services, including water distribution, treatment, and conservation programmes. The company is recognised for its proactive approach to water management and customer service, positioning itself as a trusted resource in the communities it serves. Notable achievements include its efforts in water conservation and infrastructure improvements, which have solidified its reputation as a leader in the water utility sector.
How does California Water Service's carbon action stack up? DitchCarbon scores companies based on their carbon action and commitment to reducing emissions. Read about our methodology to learn more.
Mean score of companies in the Steam and Hot Water Supply industry. Comparing a company's score to the industry average can give you a sense of how well the company is doing compared to its peers.
California Water Service's score of 36 is higher than 61% of the industry. This can give you a sense of how well the company is doing compared to its peers.
In 2024, California Water Service reported total carbon emissions of approximately 1,382,000,000 kg CO2e, with significant contributions from Scope 3 emissions, which accounted for about 1,372,440,000 kg CO2e. The company’s Scope 1 emissions were approximately 8,543,000 kg CO2e, primarily from mobile combustion (about 5,627,000 kg CO2e) and fugitive emissions (about 117,000 kg CO2e). Scope 2 emissions totalled around 32,859,000 kg CO2e. California Water Service has set ambitious climate commitments, including a long-term goal to develop a company-wide electric vehicle strategy, aiming for 100% zero-emission passenger vehicles in California by 2035. This initiative is part of their broader strategy to achieve net-zero emissions in Scope 1 by the target year of 2035. The company’s emissions data is sourced directly from California Water Service Group, with no cascaded data from parent organizations. The commitment to sustainability is evident in their ongoing efforts to reduce carbon emissions and transition to cleaner energy sources.
Access structured emissions data, company-specific emission factors, and source documents
| 2020 | 2021 | 2022 | 2023 | 2024 | |
|---|---|---|---|---|---|
| Scope 1 | 5,953,000 | 0,000,000 | 0,000,000 | 0,000,000 | 0,000,000 |
| Scope 2 | 29,093,000 | 00,000,000 | 00,000,000 | 00,000,000 | 00,000,000 |
| Scope 3 | 52,693,000 | 000,000,000 | 000,000,000 | 000,000,000 | 000,000,000 |
Climate goals typically focus on 2030 interim targets and 2050 net-zero commitments, aligned with global frameworks like the Paris Agreement and Science Based Targets initiative (SBTi) to ensure alignment with global climate goals.
California Water Service has not publicly committed to specific 2030 or 2050 climate goals through the major frameworks we track. Companies often set interim 2030 targets and long-term 2050 net-zero goals to demonstrate measurable progress toward decarbonization.

Common questions about California Water Service's sustainability data and climate commitments