Biller name
Golden State Water Company
HQ: San Dimas, CA
Legal name
Golden State Water Company
Website
Deferit is unaffiliated with Golden State Water Company
Pay your Golden State Water Company bill with Deferit
Earn 2% cashback on every bill you pay with Deferit.
Financing Option
Deferit can pay your bill now, then you pay it back later.
How to pay Payment methods Support FAQ Split into installments
Golden State Water Company Account & Billing Support
| Department | Number / Channel |
|---|---|
| Customer Service Main | 800-999-4033 |
| Emergency / Outage | (909) 394-2272 |
| TTY | 877-933-9533 |
Retrieved June 2026 · Source: gswater.com/contact-us · current departmental phone numbers and hours of operation.
About Golden State Water Company
Golden State Water Company (GSWC) is a subsidiary of American States Water Co., which was founded in 1929 and is headquartered in San Dimas, California.
Golden State Water Company bills commonly include water usage charges, monthly service and meter fees, infrastructure improvement surcharges, and conservation program charges. Deferit is unaffiliated with Golden State Water Company.
How to Pay Your Golden State Water Company Bill
- Online: Register or log in to the MyGSWater online account portal via gswater.com/payment-options to view and pay your bill instantly.
- Phone: Call 1-800-999-4033 (Golden State Water customer service and billing) to pay by phone or ask about your account.
- Mail: Mail a check payable to Golden State Water Company to PO Box 51133, Los Angeles, CA 90051-1133.
- Auto-Pay: Enroll in automatic EFT payments from your checking or savings account by completing the form at gswater.com/sites/main/files/file-attachments/automatic-payment-applicaiton.pdf.
- In-Person: Pay cash at a participating retail location through the EZ-Pay network (small service fee applies); details at gswater.com/payment-options.
- App: Download the EZ-Pay mobile app for iPhone or Android to pay your Golden State Water bill from your phone.
- With Deferit: pay now and split into 4 installments, once every two weeks. Learn more →
Payment Methods & Addresses
Retrieved June 2026 · Source: gswater.com/payment-options ·gswater.com/pay-your-bill.
Need to split your Golden State Water Company bill into installments?
Retrieved June 2026 · Source: gswater.com.
| Golden State Water Company payment arrangement |  Deferit | |
|---|---|---|
| How to access | Check Golden State Water Company's online account, payment portal, or customer support team for available payment arrangement options. | Sign up, take a picture of your bill, and Deferit pays it on your behalf. Online or in app. |
| Maximum split | If Golden State Water Company offers payment arrangements, limits are set by Golden State Water Company based on your account status. We couldn't verify a published maximum split. | 4 installments, once every two weeks, up to your Deferit balance |
| Eligibility & approval | Decided by Golden State Water Company at request time based on account status | Monthly Deferit membership, no lock-ins. Cancel anytime. |
| Fees & interest | Fees and interest were not published in the sources reviewed. Check Golden State Water Company's payment portal or support team before setting up an arrangement. | Monthly Deferit membership plus a $0.99 processing fee per bill. No interest. No late fees on eligible Deferit memberships.* |
| If you miss a payment | Missed-payment consequences are set by Golden State Water Company and may include late fees, service interruption, or collection activity depending on your account. | You can reschedule a repayment date in the app before it's due. Late fees may apply depending on your Deferit membership.* |
| Works for | Golden State Water Company bills only | Golden State Water Company and most other US household bills |
| Learn more → |
*No late fees feature included with Max and Ultra memberships. Installments on the Lite membership may incur late fees if overdue. See Membership terms for details.
Pay your Golden State Water Company bill with Deferit
Earn 2% cashback on every bill, redeemed off your next payment. No subscription fee.
Common Questions About Golden State Water Company
Can I use Deferit to pay my Golden State Water Company bill? ›
Yes. Enter your Golden State Water Company bill amount in Deferit and we pay Golden State Water Company in full right away. You repay us in 4 bi-weekly installments.
What payment methods does Golden State Water Company accept? ›
Golden State Water Company typically accepts online payments via credit card, debit card, or bank transfer. Visit gswater.com or contact their support team for the most up-to-date options.
Does Golden State Water Company offer autopay? ›
Most billers offer automatic payment to help avoid late fees. Visit Golden State Water Company's website or app to check whether autopay is available and how to enroll.
What do I do if I can't pay my Golden State Water Company bill on time? ›
Contact Golden State Water Company directly to ask about payment arrangements or hardship assistance programs. Deferit can also help — split your bill into 4 payments to ease the immediate financial pressure.
Updated: June 2026