The Cal Water Difference
We believe everyone should have access to water that is safe, clean, reliable, and affordable. From Chico in the north to the Palos Verdes Peninsula in the south, that takes a proactive commitment to infrastructure investment, water quality, conservation, community safety, and equity.
2 million
Californians served
110+
communities up and down California
#1
largest water provider regulated by the California Public Utilities Commission
#2
largest retail water provider in the state
What sets us apart
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We prioritize upgrades and maintenance to keep water safe and reliable.
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We help customers save water while securing new supplies for the future.
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We were among the first to provide bill assistance for low-income customers.
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Our partnerships improve community safety and quality of life.
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Water Quality
Industry leader in water quality
We run an extensive water quality assurance program in every community we serve, and we identify and treat high-risk contaminants before regulators require it.
- More than 400,000 tests on 62,000 water samples for about 300 contaminants every year.
- Lab equipment sensitive enough to detect levels as low as 1 part per trillion.
- Among the first utilities in America to treat for chromium-6, and already treating for PFAS “forever chemicals” in Montebello, Oroville, and Visalia.
Proactive Investment in Infrastructure
Industry leader in reliability through responsible investment
We have invested more in infrastructure maintenance and upgrades in the last decade than any other regulated water provider in California.
- More than $1 billion invested in the past four years in pipes, wells, booster pumps, water tanks, and seismic and security upgrades.
- A proposed three-year Infrastructure Improvement Plan with $1 billion in projects.
- Two treatment plants built specifically to remove PFAS.
Conservation and Sustainability
Industry leader in conservation, sustainability, and climate resilience
We plan for climate-driven droughts, floods, and wildfires, and we take a holistic approach to water efficiency and conservation.
- Between 2000 and 2020, our customers reduced their water use by 30%.
- More than $65 million invested in conservation programs over the last 10 years, including free leak fixes, lawn and drip irrigation rebates, and free conservation kits.
- Programs since 2011 will save more than 20 billion gallons over their lifetime.
Low-Income Assistance
Passionate about affordability and equity for all customers
Water is a basic human need, so we continually look for ways to manage costs while keeping our systems reliable.
- One of the first California water suppliers with a customer assistance program for qualified low-income customers.
- No late fees, plus no-interest, penalty-free payment plans for anyone who falls behind.
- A Rate Support Fund that lowers monthly bills in our highest-cost districts.
Community Safety and Partnerships
Improving safety and quality of life in our communities
We pursue projects in high-risk fire areas so water keeps flowing for firefighters and customers, even during wildfire-related power shutoffs.
- Back-up generators and dozens of new mains, hydrants, and valves to keep water flowing during outages.
- More than $186,000 in grants to nine fire departments for hoses and life-saving gear (2025).
- More than $1.8 million donated to community organizations and $80,000 in scholarships to 13 students (2025).