Please note that third party websites may post inaccurate or outdated information about Golden State Water Company’s payment options. Golden State Water recommends that customers use the authorized payment options outlined on this page and navigate to external links listed on our website. If you have additional questions, please contact the Customer Service Center at 1-800-999-4033.

To learn more about the various payment options Golden State Water Company offers, please click on the tabs below.

Pay Online

Pay Online

MyGSWater Customer Account Portal

Sign up for MyGSWater, a self-service web portal where customers are enrolled in paperless billing, can access payment history, schedule online payments and manage a personalized online profile.

MyGSWater – Sign In /Enroll


Make one-time payments online or by mobile device using your checking account, debit or credit card, check or even cash with KUBRA EZ-PAY Click on the link below or download the mobile application available for both iPhone and Android.

Payments made after 5:00 pm will be posted the next business day.

Make a One-time Payment


Customers enrolled in Check free can access their account and pay their bill online.

CheckFree – Sign In

Automatic Payments

Automatic Payments

Enroll in Golden State Water’s Electronic Funds Transfer or Automatic Payment System. Each billing period, Golden State Water will automatically deduct the total amount due from your checking or savings account on the due date shown on your bill.

To sign up, click here to download and complete the application form.

Pay by Phone

Pay by Phone

Call our 24/7 automated payment service at 1-844-706-7690. To better serve our customers, please have the following information accessible:

  • Golden State Water account number
  • Phone number

Pay by Mail

Pay by Mail

Mail checks to:

Golden State Water Company
PO BOX 9016
San Dimas, CA 91773-9016

Helpful Reminders:

  • Please make checks payable to Golden State Water Company
  • Don’t forget to send your payment in a few days before the due date, to allow for mail delivery

Pay In-Person

Pay In-Person

Pay in-person any local Golden State Water office using cash, check, or money order. Click here to locate your local office.

Visit any of the participating retailers through KUBRA EZ-PAY™ to make a cash payment. To get started, click here, select the cash payment option and generate an EZ-Payslip to bring with you at time of payment.

*A small service fee will apply. Payments made after 5:00 pm will be posted the next business day.

After Hours

Payments can also be made after business hours by placing the deposit in the local office drop box. Acceptable payment methods include:

  • Check
  • Money Order

NOTE: Payments made after 5:00 pm will be posted the next business day.