Payment channels

Pay Golden State Water Company – South San Gabriel Customer Service Area

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 MyGSWater customer account portal; Golden State Water also authorizes KUBRA EZ-PAY for one-time web/mobile, telephone, and retail cash transactions.. Never enter account credentials into a lookalike site reached through an unsolicited message.

Open payment portal ↗

Telephone payment

Phone IVR

1-844-706-7690, Golden State Water’s 24/7 automated payment service. Customers need the account number and account telephone number. General customer and emergency support is available 24/7 at 1-800-999-4033 or local 909-394-2272.

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

Golden State Water sends past-due and planned-disconnection reminders by mail, email, text, and outbound calls when customers maintain contact details in MyGSWater. The reviewed current materials do not publish a separate SMS keyword, short code, or text-to-pay authorization flow, so customers should use the authorized MyGSWater/KUBRA portal or IVR and not pay through an unsolicited text link.

Mail-in address

Golden State Water Company, PO Box 51133, Los Angeles, CA 90051-1133. Make checks payable to Golden State Water Company and mail several days before the due date. The San Dimas corporate address, 630 E. Foothill Blvd., San Dimas, CA 91773, is not the lockbox address specified for mailed payments.

Counters, drop boxes, and office hours

No staffed South San Gabriel cashier or satellite counter is identified on Golden State Water’s current payment page. Cash payment is available through participating KUBRA EZ-PAY retail agents: use the authorized locator, choose cash payment, generate an EZ-Payslip, and take the slip and cash to the selected retailer. A small retailer service fee applies and payments after 5:00 p.m. post the next business day. Telephone customer service and emergency support are available 24 hours a day, 7 days a week; no separate walk-in hours were published.

Accepted digital instruments

What you can use online

MyGSWater provides paperless billing, account history, payment history, and scheduled online payments. KUBRA EZ-PAY supports checking/electronic check, debit or credit card, and cash at participating retailers; Golden State’s tariff identifies ATM, Visa, Mastercard, Discover, or electronic check for the telephone channel. Utility electronic-funds-transfer AutoPay draws the total bill from checking or savings on the due date without a utility enrollment charge. Apple Pay and Google Pay are not identified in the reviewed materials.

2026 transaction pricing

Convenience fees

CPUC Rule 9 identifies a non-refundable $1.45 convenience fee for credit/debit-card transactions up to $800, charged by the payment vendor rather than Golden State Water; separate transactions are assessed per account. KUBRA cash payments carry a small service fee. Bank AutoPay has no utility charge, though a financial institution may charge its own fee and rejected payments can incur additional charges.

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 Golden State Water Company – South San Gabriel Customer Service Area 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.

Return to utility profile →Review shut-off rules →