Cal Water Payment Help for Online Bills, Past-Due Accounts, AutoPay and Local District Support
This guide is for California Water Service customers who need to pay a Cal Water bill, use guest pay, sign in to the customer portal, set up automatic payment, find a local Customer Center, handle a past-due notice, apply for assistance, or report a leak or outage.
Because Cal Water serves many districts, your local office phone, after-hours number, rates and service-area details depend on your district. Use the payment tools for bills, and use the district lookup for local emergency or service questions.
Fast answer: Cal Water customers can pay online through myaccount.calwater.com, pay as a guest, enroll in online account management and paperless billing, set up AutoPay, use Automatic Payment Service from a bank account, pay by phone at 888-598-9824, mail a check or money order to California Water Service, P.O. Box 7229, San Francisco, CA 94120-7229, or pay in person through Cal Water office drop boxes, Walmart Bill Pay, or Western Union locations.
Past-due warning: if your account is delinquent, do not wait for mail posting. Cal Water’s disconnection policy gives notice before discontinuance, offers payment arrangements and extensions, and lists re-establishment fees after disconnection. Contact your local Customer Center or use the assistance options before the account reaches final notice.
Cal Water Bill Pay Quick Facts
Cal Water Bill Pay Action Board
Choose your situation. Each action gives the official Cal Water path, phone number, or document you need.
I need to pay now
Use the Cal Water customer portal. You can log in, sign up, or pay a bill as a guest.
Pay / loginI want to pay by phone
Call Cal Water’s automated bill payment line at 888-598-9824 using a bank account or accepted card.
Call 888-598-9824I need an emergency number
Emergency and after-hours numbers are district-specific. Use District Phone Numbers or Find My District.
District phone numbersI am past due
Check assistance first: PromisePay, alternative payment arrangements, payment extensions and CAP may help avoid disruption.
Assistance optionsI need to start or stop service
Use Cal Water’s Start/Stop Service page. Requests through the contact form may require up to two business days for processing.
Start / stop serviceI see a leak or no water
For emergencies such as no water, gushing water, hydrant damage, main break or tampering, call your local district immediately.
Contact Cal WaterHow to Pay a Cal Water Bill Online
Open myAccount
Use Cal Water’s official customer portal at myaccount.calwater.com. Avoid search ads or third-party bill sites for urgent payments.
Open portalChoose login, sign up or guest pay
Registered customers can manage account tools; guest pay is useful when you only need to make a one-time payment.
Payment instructionsUse the right payment method
Cal Water lists online payment options using bank account, Visa, Mastercard or Discover, depending on the online path.
Continue to paySave confirmation
Keep the confirmation number, account number, payment date and amount. If the bill is past due, contact your local Customer Center after paying.
Find local officeAutoPay, Paperless Billing and Automatic Payment Service
| Option | What it does | Best for | Important note |
|---|---|---|---|
| Portal AutoPay | Recurring payments through the customer portal using bank account, Visa, Mastercard or Discover. | Customers who want online account management, bills and payment history. | Confirm each account if you manage multiple addresses. |
| Paperless billing | Online statements instead of paper bills; past bills can be viewed online if enrolled. | Customers who need bill history and reminders. | New online accounts may be enrolled in paperless billing unless opted out. |
| APS | Automatic Payment Service deducts the amount owed from checking or savings each month. | Customers who want a bank-draft style payment. | Contact your local Customer Center or use the application form. |
| Payment arrangements | Portal and assistance tools may help with past-due payment plans. | Customers who need to spread out a balance. | Do not wait until final disconnection notice. |
Pay by Phone, Mail, Walmart, Western Union or Office Drop Box
| Method | Official detail | Best for | Watch out for |
|---|---|---|---|
| Phone payment | Call 888-598-9824 toll-free with bank account or accepted card. | Quick payment without portal login. | Save confirmation; call local district if the account is urgent. |
| California Water Service, P.O. Box 7229, San Francisco, CA 94120-7229. | Non-urgent check or money order payment. | Include account number. Do not mail cash. | |
| Walmart Bill Pay | Go to MoneyCenter or Customer Service Desk, provide full account number and ask for WMBP same-day processing. | Cash or debit-card in-person payments. | FAQ lists a $1,500 transaction limit. Keep receipt. |
| Western Union | Cal Water lists Western Union pay stations; fee is temporarily suspended on the payment-options page. | In-person retail payment when available locally. | Confirm the location and posting time before relying on it for urgent service. |
| Cal Water office drop box | Use your district/local office address. Find it through district selection or Find My District. | Local drop-off for non-cash payment. | Call your local Customer Center if service is near disconnection. |
Past-Due Bill, Disconnection Policy and Restoration Fees
Cal Water has a formal disconnection policy. If you are behind, act before the final notice stage.
Delinquent notice
Cal Water’s policy states that upon delinquency, it sends a notice stating service will be discontinued after 60 days.
Disconnection policyPayment arrangements
Customers unable to pay in the normal period may request arrangements, including splitting payments up to six months or a payment extension up to two weeks.
Assistance optionsFinal notice
For certain missed payment-plan or current-charge failures lasting 60 days or more, a final notice door hanger is delivered at least five business days before shutoff.
Final notice ruleRestoration fee
Policy lists a re-establishment fee of $50 during business hours and $90 after normal business hours after non-payment disconnection.
Restoration detailPromisePay
Residential customers with a past-due balance of $50 or more may be able to enroll in interest-free PromisePay payment plans.
Enroll in PromisePayCall local office
If you dispute a bill or need payment options, contact your local Customer Center by district phone or contact form.
District phone numbersPast-due call script
CAP, PromisePay, Payment Extensions and Other Help
Customer Assistance Program
CAP offers a monthly discount on water bills for eligible low-income households or customers enrolled in qualifying public assistance programs.
Apply for CAP2026–2027 income limits
Effective June 1, 2026 through May 31, 2027, CAP income guidelines begin at $43,280 for 1–2 people and increase by household size.
Check eligibilityCAP questions
Cal Water lists CAP questions by email and toll-free phone at 877-419-1701.
Call 877-419-1701PromisePay
Residential customers with $50 or more past due can use PromisePay for customizable, interest-free plans with reminders.
Open PromisePayPayment extension
Cal Water’s assistance page says eligible customers may be able to defer payment by up to two weeks.
Request helpPayment arrangement
Alternative arrangements may split payments among several months when a past-due balance is difficult to manage.
Arrangement optionsStart, Stop or Transfer Cal Water Service
Start service
Cal Water’s Start/Stop page says you must be 18 or older to start service, and someone 18 or older must be present when water is turned on.
Start serviceTransfer service
If transferring from an existing Cal Water account to a new address, use Contact Us and send a message to the district you want service in.
Contact districtProcessing time
Cal Water’s contact form says requests may require up to two business days for processing.
Submit requestFind Your Cal Water District Before Calling About Service
Cal Water has different districts and rate regions. Payment phone is centralized, but local emergencies, office drop boxes, water quality alerts, rates and outages are district-specific.
Use Find My District
Enter your property address to find your district, water system and rate region when you are not sure which Cal Water office serves you.
Find districtCheck district phone numbers
Use the District Phone Numbers page for urgent local service, after-hours and district support information.
Phone listCheck current alerts
If there is a service issue, check Cal Water’s alerts before calling; if it is not listed and urgent, call by phone.
Outage infoUse contact form for non-emergency
Cal Water says not to use the form for emergencies; it expects a reply within one business day for non-urgent messages.
Contact formHigh Cal Water Bill: Check Usage, Leaks and Billing Units
Know the unit
Cal Water’s FAQ says a CCF is 748 gallons. Compare usage units, not only the dollar amount.
Customer Care FAQIndoor leaks
- Check toilet flappers with a dye test.
- Listen for a toilet that refills when not used.
- Inspect faucets, showerheads and water heater.
- Look for damp spots, slab issues or crawlspace leaks.
Outdoor usage
- Review irrigation timers and seasonal watering.
- Check broken sprinkler heads and hose bibs.
- Look for pool fill, pressure washing or new landscaping.
- Compare this bill to the same season last year.
High-bill call script
Report leak on Cal Water’s side
Cal Water says to call your local Customer Center for leaks on Cal Water’s side of the meter, street leaks, emergencies, damaged hydrants, main breaks or sinkholes.
Report leaks / wasteRates, Tariffs and Service-Area Maps
Cal Water rates are not one statewide price. Your district, rate region, meter, service type and tariff decide the bill.
CPUC-regulated tariffs
Cal Water says rates and tariffs for regulated systems are set by the California Public Utilities Commission.
Rates and tariffsService-area maps
Tariff lists include service-area maps showing a district or system’s service area boundaries.
Find service-area mapPick your district first
Select your district on the rates page to see current adopted documents for your specific area.
Find districtScam and Shutoff-Call Warning
Hang up if unsure
Cal Water warns that scammers may demand immediate payment to avoid disconnection. If unsure, hang up and call your local Cal Water office.
Assistance and scam warningUse official payment routes
Start from calwater.com or myaccount.calwater.com for payments. Do not give card data to a caller you cannot verify.
Official portalVerify locally
Use District Phone Numbers or Find My District to confirm your local Customer Center before making an urgent payment.
Verify phone numberOfficial Cal Water Bill Pay Links
Cal Water Bill Pay FAQ
How do I pay my Cal Water bill online?
Use Cal Water’s official customer portal at myaccount.calwater.com. You can log in, sign up or pay a bill as a guest.
What is the Cal Water phone payment number?
Call 888-598-9824 to pay by phone using a bank account or accepted card.
Where do I mail a Cal Water payment?
Mail a check or money order to California Water Service, P.O. Box 7229, San Francisco, CA 94120-7229. Include your account number and do not send cash.
Can I pay Cal Water at Walmart?
Yes. Visit a Walmart MoneyCenter or Customer Service Desk, say you want to pay Cal Water through Walmart Bill Pay using WMBP, provide your full account number, and ask for same-day processing.
Does Cal Water offer AutoPay?
Yes. Customers can use portal AutoPay or Automatic Payment Service. APS deducts the amount owed from a checking or savings account each month.
What is Cal Water PromisePay?
PromisePay offers customizable, interest-free payment plans for residential customers with a past-due balance of $50 or more. Both property owners and tenants can qualify.
Does Cal Water have a low-income discount?
Yes. The Customer Assistance Program provides a monthly discount for eligible households or customers enrolled in qualifying public assistance programs.
What happens when a Cal Water bill becomes delinquent?
Cal Water’s policy says a delinquent notice is issued stating that service will be discontinued after 60 days. Customers who cannot pay during the normal period may request arrangements or extensions.
How do I find my local Cal Water office or emergency number?
Use Find My District or the District Phone Numbers page. Local phone numbers, after-hours support and office details vary by district.
What is a CCF on a Cal Water bill?
A CCF means one hundred cubic feet. Cal Water’s FAQ says one CCF equals 748 gallons.