Contra Costa Water District (CCWD)
Central and eastern Contra Costa County, including Concord, Martinez, Pleasant Hill, Walnut Creek, Pittsburg, Antioch, Brentwood, and neighboring communities served by the District’s treated-water system
Population reference
198,000 people (California active CWS registry, PWS ID CA0710003; the District also reports wholesale and untreated-water relationships that serve additional communities through separate retail systems)
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
- Bimonthly. CCWD’s EasyPay page calls the water bill bimonthly, and the open-account page says a new customer should expect the first bill within two months.
- Rate structure
- Uniform usage charge by unit with meter-size daily service charge and an elevation-zone energy charge, rather than increasing residential consumption blocks. Effective February 1, 2026, treated-water usage is $6.98 per unit, where one unit is 748.05 gallons or 100 cubic feet. A typical 5/8-inch meter has a $1.01 daily service charge; 3/4 inch is $1.52/day unless the qualifying inside-sprinkler configuration receives the $1.01 rate. Energy is added per unit by zone, from $0.13 in Zone 1 through $2.37 in Zone 8. Applicable backflow-prevention daily charges and special untreated-water, municipal, irrigation, or demand charges are separate.
- Residential cost reference
- Approximately $78–$98 per month for a typical treated-water 5/8-inch residential account using 5,000–7,000 gallons monthly, assuming the lowest Zone 1 energy charge and no backflow device, special service, or drought charge. At 5,000 gallons (about 6.68 units), the estimated water-only total is about $77.80/month: $30.30 daily service charge, $46.64 usage, and about $0.87 energy. At 7,000 gallons (about 9.36 units), it is about $96.80/month: $30.30 service, $65.32 usage, and about $1.22 energy. CCWD is a water supplier and does not bill one universal District sewer charge; local wastewater agencies or cities may send a separate sewer bill.
- Meter reading
- CCWD’s treated-water accounts are generally read manually every other month for billing; a District staff report describes approximately 61,000 treated-water meters historically read bimonthly, with only a limited AMI pilot/electronic-register deployment rather than universal hourly AMI. The current My Water Report portal provides detailed usage history, household-occupant updates, high-use alerts, and a step-by-step leak-resolution guide. Customers can also purchase a discounted Flume smart-home monitor through CCWD’s 2026 rebate program for minute-level usage visibility, but Flume is a customer-side monitoring device and not the District’s billing meter. Billing remains based on the District meter read and the published unit conversion of 748.05 gallons per 100 cubic feet.
- New-account deposit
- Under CCWD’s current open-account page, residential customers normally do not owe a security deposit other than the non-refundable new-account fee. If service was discontinued for nonpayment and the customer is reestablishing credit, CCWD may require a $50 minimum deposit, refundable after one year of satisfactory credit, in addition to all outstanding balances and the $74 collection fee. The current public page does not identify a credit-check waiver or a separate deposit amount for ordinary residential account opening. New construction has separate facility-reserve, service-line, meter, and backflow-prevention charges that are not ordinary customer deposits.
- Activation or transfer fee
- CCWD states that a fee is charged whenever a customer opens an account or changes addresses within the District, but the current public open-account page does not display the ordinary residential account-opening/transfer fee amount. Opening requires a call to 925-688-8000 during business hours, the customer’s full name and date of birth, new service address, owner/renter status, contact information, and at least 24 hours’ notice. Closing an account is free with 24 hours’ notice. If CCWD must turn water on after hours, a weekend, or a holiday, an overtime charge applies, but the current account page does not publish the amount. New-construction connections have separate 2026 facility-reserve, service-line, meter, and backflow charges.
Context, not a score
How documentation coverage compares
This profile
86%
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
6 of 7 fields in this section contain provider-specific public detail in dataset August 1, 2026.
Documented
86%
Details not confirmed in the reviewed public material
- Wastewater and sewer calculation
“Not confirmed” means the directory did not identify a dependable public statement. It does not mean the provider has no policy or option.
Primary verification routes
- Contra Costa Water District (CCWD) public website ↗
Provider-controlled destination used to confirm current customer instructions.
- EPA SDWIS / ECHO lookup (CA0710003) ↗
Search the federal drinking-water database using public water system ID CA0710003.