My GWW and credit card payments will be offline from 8pm Saturday 10 October to 1pm Sunday 11 October 2026 while we complete scheduled updates. During this time, you can still pay your bill using BPAY or Post Billpay. Call 13 44 99 for billing support on Sunday between 9am-5pm, or to report a fault or emergency anytime - 24/7.
Important customer update
Billing updates and customer privacy
We’re here to help with billing issues and potential privacy incidents. Learn more.
As part of an enforceable undertaking, we’re improving how we manage billing to better support you. Learn more.
Download the Department of Families, Fairness and Housing's concession application and send it to: Greater Western Water Locked Bag 350 Sunshine VIC 3020
Processing your application
Once we receive your application, it can take up to five working days to process.
When your application is approved, we will apply the concession to your next bill.
For more information
For help with your concession application, we're available Monday to Friday between 8:30am and 5pm, except public holidays.
We’ve temporarily extended our call centre hours. You can reach us by phone Monday to Friday 8am to 7pm, and Saturday and Sunday 9am to 5pm (closed public holidays).