Payment channels

Pay California Water Service Company - Chico System

Use the provider’s verified online, telephone, mail, or counter instructions. Check the final confirmation screen for the amount, processing date, and any transaction fee before submitting.

Primary online route

Use the official payment portal

The direct portal is the fastest route when it is available. The provider identifies its payment gateway as Cal Water customer portal (vendor not publicly identified). Never enter account credentials into a lookalike site reached through an unsolicited message.

Open payment portal ↗

Telephone payment

Phone IVR

1-888-598-9824

Have your account number and payment instrument ready. Follow the provider’s recorded prompts and retain the confirmation number.

Alternative channels

Mail, text, and in-person payment instructions

Pay by text

Cal Water does not publish a general keyword-based text-to-pay enrollment path for Chico. Eligible residential customers with past-due balances of at least $50 may be offered PromisePay enrollment and text reminders through calwater.promise-pay.com; use the account-specific invitation or enrollment link, verify the premise and balance, select an approved installment arrangement, and authorize the requested payment method. Emergency and billing alerts depend on current mobile-contact information in the account rather than a universal SMS keyword.

Mail-in address

California Water Service, P.O. Box 7229, San Francisco, CA 94120-7229. Include the payment stub or account number, do not mail cash, and allow postal time for the payment to post.

Counters, drop boxes, and office hours

The Chico District customer center is at 2222 Dr. Martin Luther King Jr. Parkway, Chico, CA 95928. Posted office hours are Monday through Friday, 7:00 a.m. to 7:00 p.m., but Cal Water explicitly states that in-person service is not available at this location. Customers should use the office drop box if available, online or telephone payment, mail, Walmart Bill Pay, or a participating Western Union location. Walmart and Western Union operate on retailer hours, may charge their own fee, and may restrict accepted instruments; bring the Cal Water account number and confirm current drop-box and holiday arrangements before visiting.

Accepted digital instruments

What you can use online

Cal Water accepts Visa, Mastercard, and Discover credit or debit cards and payments from a bank account/e-check through the customer portal or automated phone system. Cash, check, and money order are accepted through specified non-digital channels such as Walmart Bill Pay, Western Union, mail, or an authorized drop box. Apple Pay and Google Pay were not confirmed as supported payment instruments in the reviewed Chico materials.

2026 transaction pricing

Convenience fees

The reviewed Cal Water 2026 payment-options materials do not state a routine utility-imposed convenience fee for the myaccount.calwater.com portal or automated phone payments and do not advertise a percentage surcharge for ordinary card or e-check payments. Third-party retail channels can impose their own service fee, and postage is separate from the water charge. Confirm the final amount on the payment confirmation screen.

Fees can vary by payment type, channel, account class, and processor terms. The checkout screen is the final fee disclosure.

Payment guidance

Choose the payment channel that fits your deadline

The safest payment path is the one published by California Water Service Company - Chico System and matched to the account information on your bill. Online portals are convenient, but telephone, mail, counter, and drop-box options may follow different posting schedules and may use different fees.

For a routine payment, save the final confirmation page or IVR number and check when the transaction will post. For a same-day shut-off notice, do not assume that submitting a card payment automatically stops a field order; ask the provider what amount and confirmation are required.

Never send your account number, password, card details, or bank information to Water Ledger. Those details belong only on the provider’s verified payment channel or at an authorized counter.

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