Payment channels

Pay Golden State Water Company - Southwest 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 MyGSWater customer account portal; Golden State Water also authorizes KUBRA EZ-PAY for one-time web, telephone, and participating-retailer cash payments.. 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 should have the account number and account telephone number available. 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Golden State Water's current Southwest materials do not publish a separate SMS keyword, short code, or text-to-pay enrollment sequence. The company may use customer contact information for reminders and service notices, but customers should enroll in MyGSWater or use the published KUBRA/IVR channels rather than following an unsolicited payment link in a text message.

Mail-in address

Golden State Water Company, P.O. Box 51133, Los Angeles, CA 90051-1133. Make checks payable to Golden State Water Company and mail several days before the due date. The Southwest physical contact is 1600 West Redondo Beach Blvd., Suite 101, Gardena, CA 90247, while mailed bill payments go to the Los Angeles lockbox.

Counters, drop boxes, and office hours

No staffed Southwest customer-service cashier or fixed walk-in hours are identified in the current payment materials. Customers can pay cash through participating KUBRA EZ-PAY retail agents by using the authorized locator, selecting cash payment, generating an EZ-Payslip, and taking the slip and cash to the selected retailer. Retailer hours and fees vary, payments after 5:00 p.m. may post the next business day, and customers should confirm the location before traveling. Golden State Water's telephone customer and emergency service is available 24 hours a day, 7 days a week.

Accepted digital instruments

What you can use online

MyGSWater supports online account access, paperless billing, payment history, scheduled payments, and account management. KUBRA EZ-PAY supports checking/electronic check, debit or credit card, and cash at participating retailers. Golden State Water's tariff identifies ATM, Visa, Mastercard, Discover, and electronic check for telephone payment; utility EFT AutoPay can draw from checking or savings on the due date. Apple Pay and Google Pay are not identified in the reviewed Southwest 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; each account transaction is assessed separately. KUBRA cash payments carry a small retailer service fee. Bank AutoPay has no utility enrollment charge, although 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 - Southwest 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.

Return to utility profile →Review shut-off rules →