Private Investor-Owned Utility (not-for-profit mutual water company)
California Domestic Water Company
Serving Wholesale transmission and treatment system from El Monte through Industry, Whittier, La Habra Heights, La Habra, and Brea; active PWS CA1910199
Population served
California Drinking Water Watch lists 290,814 people for active community water system CA1910199, with 20 commercial and 1 industrial listed service connection and no residential connections in the state registry. The Company's public 2023 regional description says its potable water is delivered through Suburban Water Systems, the City of La Habra, and the City of Brea to about 222,000 people; that figure describes downstream customers rather than a direct retail customer count. The Company's current operating profile is primarily wholesale, so both official population descriptions are retained with that distinction.
State system code
FIPS 06
Billing frequency
Monthly for wholesale water-service invoices. The rules state that meters are read at or near the end of each month as operationally feasible and invoices are prepared, processed, and rendered during the first week of the following month for the consumption month. Each invoice includes a Shareholder Water Entitlement and Consumption Report showing monthly deliveries, annual consumption, and credits against water entitlements.
Provider briefing
How this utility’s billing works
California Domestic Water Company operates as a private investor-owned utility (not-for-profit mutual water company) serving Wholesale transmission and treatment system from El Monte through Industry, Whittier, La Habra Heights, La Habra, and Brea; active PWS CA1910199. Customers should use the provider’s current account-specific bill and official customer-service instructions as the final authority for deadlines, balances, and service requests.
The published water-rate framework is described as Wholesale shareholder cost-of-service structure rather than a retail household tier schedule. The Board annually establishes ready-to-serve rates from each wholesale shareholder's prior three-year rolling average system demand, with quantity rates by delivery lift, watermaster assessments, common-stock assessments, preferred-stock entitlements, excess-water charges, and other approved shareholder charges. The most recently publicly posted wholesale schedule covers July 1, 2024–June 30, 2025: ready-to-serve $0.218/CCF, quantity rates by LIFT 1W, LIFT 1E, and LIFT 2E, plus $100 per common-stock share billed in three installments. A separate 2026 rate schedule was not exposed in the reviewed public documents, so exact 2026 wholesale prices are not publicly stated rather than inferred.. Bills are generated monthly for wholesale water-service invoices. the rules state that meters are read at or near the end of each month as operationally feasible and invoices are prepared, processed, and rendered during the first week of the following month for the consumption month. each invoice includes a shareholder water entitlement and consumption report showing monthly deliveries, annual consumption, and credits against water entitlements., and a typical residential cost reference is A dedicated this detail was not publicly posted. . CA1910199 is principally a wholesale mutual-water-company system, and California Domestic no longer maintains retail water facilities for ordinary residential billing. The latest posted retail schedule is historical for FY 2024–25 and was designed for a small number of former retail shareholders; a current residential 5,000–7,000-gallon household cost cannot be calculated reliably from the wholesale three-year-demand and shareholder-entitlement formulas. Downstream retail customers should use the City of La Habra, City of Brea, or Suburban Water Systems bill and tariff applicable to the premise.. These descriptions are useful planning benchmarks; actual charges can change with meter size, usage, sewer averaging, local taxes, drought stages, or account-specific fees.
Wastewater and sewer calculation
A dedicated this detail was not publicly posted. For the California Domestic wholesale water invoice. The Company supplies potable water to shareholder providers and does not publish a retail sewer or wastewater charge, winter-average formula, or percentage tie-in. Downstream sewer charges are administered by the retail water/sewer agency, municipality, sanitation district, or property arrangement serving the customer's premise.
Meter and infrastructure notes
The current rules state that California Domestic meters are read at or near the end of each month as operationally feasible, with re-reads for billing accuracy, newly installed meters, closing bills, and other operational purposes. Wholesale invoices report delivered and consumed water by month and entitlement credits. The Company operates seven active groundwater wells, treatment facilities, pumps, and approximately 30 miles of pipeline, but the reviewed public materials do not identify an AMI/AMR vendor, hourly customer telemetry, remote-read frequency, or a fixed retail route calendar. The documented method is periodic monthly operational meter reading and shareholder reporting.
Emergency water support
Report a leak or water emergency
(562) 947-3811 is California Domestic's published office contact. The Company's reviewed website does not identify a separate 24/7 emergency IVR or after-hours water-break number. Its operating system includes wells, treatment facilities, pumps, and long-distance transmission pipelines; shareholders and successor retail providers should use this number during office hours and their own retail provider's emergency line for a customer-side or downstream emergency.
Official starting point
Choose the right next step
Reading this profile
A practical reference for Wholesale transmission and treatment system from El Monte through Industry, Whittier, La Habra Heights, La Habra, and Brea; active PWS CA1910199
California Domestic Water Company is listed here as a private investor-owned utility (not-for-profit mutual water company). The profile separates account actions—such as paying a bill or requesting service—from explanatory material about rates, meters, wastewater, leaks, and delinquency.
Because utility rules can vary by account class, meter size, service address, billing date, and local ordinance, treat the published bill and current provider website as the final authority. Use this profile to locate the correct channel and prepare better questions for customer service.
If your issue is urgent, start with the provider’s emergency number or official payment route rather than waiting for an email response. Keep a written record of calls, confirmation numbers, notice dates, and documents you submit.