Pay your GPTX Water (City of Grand Prairie) bill quickly and securely — use the official portals and options below.
GPTX Water service is provided by the City of Grand Prairie Utilities in Texas. You can pay your water bill online (with or without registering an account), by phone, by mail, or in person at City Hall / Drive-Thru. A new Water Utility Customer Portal was launched in 2025 for easier access to statements, usage, and payments.
How to Pay Your GPTX Water Bill Online
The City of Grand Prairie offers a modern online portal where you can:
- Make one-time (guest) payments without creating an account (just enter your water account number)
- Login / Register for full access to view statements, payment history, usage, and set up paperless billing
- Enroll in Auto Pay (recurring payments from your bank account)
Direct Payment Link:
https://paywaterbill.gptx.org/login
You can also start from the official payment page:
https://www.gptx.org/Departments/Water-Service/Make-a-Water-Bill-Payment
Pay by Phone
Yes, you can pay your GPTX Water bill easily by phone using the automated system.
- Automated Payment Phone Number: 972-237-4545
Call this number 24/7 for one-time or recurring payments using your bank account or card.
For customer service and billing questions:
972-237-8200
Pay In Person or Drive-Thru
- Drive-Thru Payments: Available Monday – Friday, 8:00 a.m. to 5:00 p.m.
Location: Water Utilities Department, 300 W. Main Street, Grand Prairie, TX 75050 (Drive-thru lanes on Main and NW 3rd St.) - In-Person at City Hall: Same address and hours. Cash and check payments accepted.
Mail a Payment
Send your check or money order to:
City of Grand Prairie Water Utilities
PO Box 534045
Grand Prairie, TX 75053
Include your water account number on the check. Do not send cash.
Mobile App & Payment Assistant
- No dedicated mobile app is required. The new customer portal is fully mobile-friendly — you can pay anytime from your smartphone or tablet.
- After logging in, you can set up Auto Pay (electronic funds transfer) for hassle-free monthly payments with no extra fees.
Fees & Late Payments
- Bank account (ACH) payments: Usually free
- Credit/debit card payments: May include a small convenience/processing fee (disclosed at checkout)
- Late payments can result in additional fees and possible service interruption. Contact customer service promptly if you anticipate a delay.
Contact Information
- Water Billing Customer Service: 972-237-8200
- Automated Payment Line: 972-237-4545
- Email: [email protected]
- Physical Address: Water Services, 300 W. Main St., Grand Prairie, TX 75050
- Business Hours: Monday – Friday, 8:00 a.m. – 5:00 p.m.
For the fastest help, have your water account number ready when you call or email.
GPTX Water Bill Pay – FAQs
How do I pay my GPTX Water bill online?
Visit paywaterbill.gptx.org. You can make a guest/one-time payment or register for an account to manage everything online.
Can I pay by phone?
Yes. Use the automated system at 972-237-4545 or call customer service at 972-237-8200.
Is there a mobile app?
No separate app is needed. The official portal works great on mobile browsers.
Can I pay in person?
Yes — use the Drive-Thru or visit City Hall (300 W. Main St.) Monday–Friday 8 a.m.–5 p.m.
What is the mailing address for payments?
City of Grand Prairie Water Utilities, PO Box 534045, Grand Prairie, TX 75053.
Are there convenience fees?
Bank payments are typically free. Credit card payments may have a small processing fee.
How do I set up Auto Pay?
Log into the customer portal and follow the instructions to enroll in recurring bank payments.
Still need help?
Call 972-237-8200 or email [email protected]. Always check the latest instructions on your monthly bill.
Payment options and portal links can change. Always verify using the official City of Grand Prairie website or the contact information on your bill.