Who Are the Core Customers of California Water Service Group Company?

About 90 percent of the Cal Water Group customer base are residential customers, providing the most stable revenue stream and driving service planning, meter deployments, and rate cases.

Cal Water serves commercial customers, large-scale agricultural operations in California's Central Valley, and industrial users-including high-end resort communities in Hawaii-supplying bulk and specialty services tied to peak demand and seasonal variability.

California Water Service customer segments span consumers, businesses, and public institutions; the business is effectively mixed-market, contracting with municipalities through public-private partnerships to meet regulatory and infrastructure needs.

Residential customers remain the largest commercial driver in 2025/2026, while municipal and institutional customers grow in strategic importance due to aging infrastructure costs and federal water quality mandates-shaping capital spending and rate-case priorities. Read more: Why Customers Choose California Water Service Group Company

Silicon Valley and Los Angeles basins drive the core customers of California Water Service Group because dense residential and commercial clusters plus industrial users need sophisticated supply, treatment, and infrastructure investment.

Hawaii and New Mexico subsidiaries saw accelerated demand in 2025 from a tourism rebound and suburban migration; these Cal Water Group customer types now represent a meaningful incremental revenue stream.

The company is strongest in reach and revenue mix within California, with 93% of assets and revenue, deep municipal and institutional contracts, and scale in residential customers California Water Service serves across metro systems.

In 2025 demand is growing fastest in climate-stressed regions such as the Central Valley-where water banking and drought-resilient planning for agricultural, municipal and industrial customers is rising-and in Hawaii/New Mexico suburbs tied to tourism and relocation trends. See Product Growth of California Water Service Group Company for context: Product Growth of California Water Service Group Company

California Water Service Group expands through its non-regulated segment offering contract water system design, construction, and property management to external partners, creating fee revenue outside rates. This lets Cal Water Group monetize institutional expertise across residential customers California Water Service and commercial customers Cal Water without shifting focus from regulated delivery.

Cal Water preserves trust among primary customers of California Water Service Group by prioritizing safety, reliability, and regulatory compliance; capital spending ties directly to service standards. The Mission, Vision, and Values of California Water Service Group Company guides investments that affect residential customers California Water Service and municipal and institutional customers Cal Water.

Repeat demand is driven by essential service stickiness: household water usage, municipal contracts, and small business accounts show low churn. Cal Water customer types benefit from coordinated regional hubs that standardize maintenance, boosting renewals and lower outage frequency.

The key growth lever is a disciplined M&A and capital program: Cal Water is executing a $1.6 billion capital investment plan for 2025-2027 while targeting tuck-in acquisitions of smaller, distressed water systems to integrate into regional hubs and realize economies of scale, supporting expansion of service-based and geographic diversification.