California Water Service - Stockton System
Stockton and vicinity, San Joaquin County
Population reference
176,266 people; 40,104 residential, 4,180 commercial, and 75 industrial service connections reported for active PWS CA3910001
Billing detail
Broad public detail found
Official destination
Open provider website ↗Provider-specific findings
Billing and account research from public material
Provider-specific research notes are displayed separately from fields that contain only an unavailable-information marker. Read qualifiers in each note and verify current account terms with the provider.
- Billing frequency
- Monthly metered billing is used for Cal Water customer accounts; the Stockton district page provides the district payment and account channels, and Cal Water's customer materials tie statements to meter readings and service periods. The issued statement controls the exact due date and billing period.
- Rate structure
- Increasing-block conservation pricing for residential metered customers under CPUC Schedule ST-1-R, Stockton Tariff Area. Effective July 1, 2026, the 5/8 x 3/4-inch monthly readiness-to-serve charge is $37.42; usage is $1.5972 per CCF for 1–6 CCF, $6.4330 per CCF for 7–13 CCF, $8.0228 per CCF for 14–18 CCF, and $9.5987 per CCF above 18 CCF. One CCF is approximately 748 gallons. Bills can also include CPUC, Rate Support Fund, CAP, and other approved surcharges or surcredits.
- Residential cost reference
- Using the July 2026 ST-1-R 5/8 x 3/4-inch schedule, a 5,000-gallon month is about 6.68 CCF and produces approximately $51.38 in basic water charges before approved surcharges, surcredits, taxes, or separate sewer service. A 7,000-gallon month is about 9.36 CCF and produces approximately $68.62 because usage above 6 CCF moves into the second tier. The exact bill depends on meter size, days in the billing period, usage, and line-item adjustments; this is a tariff calculation rather than a guaranteed average bill.
- Wastewater and sewer calculation
- The active CWS record and Cal Water Stockton tariff cover potable water service. The reviewed Cal Water materials do not publish a Stockton wastewater formula, winter-average method, or percentage tie-in. Sewer charges, if applicable, are billed or administered separately by the responsible local sewer agency or property arrangement; customers should use that agency's sewer account rules rather than infer wastewater charges from the Cal Water meter bill.
- Meter reading
- The Stockton system uses customer meters and Cal Water's billing process relies on periodic meter readings; the district page does not publish a fixed local AMI deployment percentage or route day. Cal Water's planning materials and company-wide information describe AMR/AMI pilots in several districts, but do not establish that every Stockton account has an advanced meter. Customers should use the bill's read dates, meter number, and current/previous reads; the portal provides usage history, while Cal Water can confirm the exact meter technology and leak-alert capability for an individual premise.
- New-account deposit
- Cal Water Rule 6 allows a cash deposit or other approved credit security when an applicant does not establish credit, while Rule 7 governs deposit return. The exact deposit is account- and credit-specific rather than a universal Stockton flat amount. After 12 consecutive months in which at least 10 bills were paid within 15 days after presentation and service was not discontinued for nonpayment, Cal Water automatically refunds the deposit as an account credit with applicable interest; a customer may also establish credit by another approved method and request return. A prior delinquency can require payment of the unpaid balance, reconnection charges, and a deposit to re-establish credit.
- Activation or transfer fee
- No single universal 2026 routine name-transfer fee is stated on the reviewed Stockton district or payment pages. Cal Water's operating rules and tariffs separately govern new service, connections, meters, deposits, construction, inspections, and special facilities. A customer should obtain the premise-specific activation, connection, or deposit amount from Cal Water rather than assume that a routine account transfer has no possible charge.
Context, not a score
How documentation coverage compares
This profile
100%
overview fields with research notes
California
67%
records with any overview detail
National index
50%
records with any overview detail
Coverage measures what this directory documented. It does not measure service quality, affordability, or regulatory compliance.
Research record
Broad public detail found
7 of 7 fields in this section contain provider-specific public detail in dataset August 1, 2026.
Documented
100%
Primary verification routes
- California Water Service - Stockton System public website ↗
Provider-controlled destination used to confirm current customer instructions.
- EPA SDWIS / ECHO lookup (CA3910001) ↗
Search the federal drinking-water database using public water system ID CA3910001.