Bill Payment

IMPORTANT UPDATE: As of September 1st, 2023, G&W Water Supply will be accepting ALL electronic payments through Nexbillpay. IF you are set up for auto-pay through PSN currently you will need to set up a new one through your new customer portal. Please see the below mailer we have sent out for details. 

Consumer Acct Setup



Customer account numbers are now six digits long due to new billing software. The number 1 and/or mulitple zeros have been added to your account number. Everything regarding your account is still the same. See examples below if you are trying to register on Ampstun:


Acct#1 is now Acct#100001

Acct#12 is now Acct#100012

Acct#123 is now Acct# 100123

Acct#1234 is now Acct#101234



G & W Water Supply mails out bills by the 1st of every month, and they are due on the 15th. If you do not receive your bill, please call the office. After the 15th, a $20.00 late charge will be added to your bill. Approximately ten days after the 15th, meters on past due accounts will be locked. To avoid your meter being locked, please pay before the 15th or call to make payment arrangements.

NOTE: If your meter has been locked and you make a payment after 3:00 PM, your meter will not be unlocked until the following morning.



G & W Water Supply Corporation offers a wide variety of convenient payment options for our customers. Simply choose the option that best suits your needs.

Online Bill Pay

At G & W Water, you may pay your bill 24/7.  We accept all major credit/debit cards. Just click the green "Pay Your Bill" button at the top or at the bottom of this page to get started.  

Payment By Mail

If paying by check or money order through the mail, please send all payments with your payment coupon. To avoid late fees, please mail your payment at least five-seven business days before the due date specified on your bill.

Payment Drop-off Location

You may pay your bill in person at our office address. Our business hours are 7:30 am to 4:00 pm Monday through Friday. We accept cash, check, or money orders. To avoid longer wait times, please note that the first day after a holiday is normally very busy.

Payment at These Locations
Just present your water bill stub with your payment.

  • Prosperity Bank in Waller
  • Prosperity Bank in Navasota

Payment Through Financial Institution Online Bill Pay

Many financial institutions such as major banks offer their customers the ability to pay their bills via an online bill payment service (through your bank's website). Normally, these services debit the customer's checking or savings account to pay the bill. Depending on the financial institution, they may or may not charge a fee for the service. Payments may take up to seven business days to post to the customer's account. Please consult with your bank for more information.

Payment By Automated Phone System

You may call toll free 888-409-2974 to pay your bill with a credit or debit card. You will need to have your water bill account # located on your bill stub, as well as your debit or credit card #, your card expiration date, and the security # located on the back of your card. We accept all major credit cards as well as debit cards with a Visa, MasterCard, Discover and American Express logo.


If you need assistance with viewing or paying online, please call Nexbillpay at 1-800-639-2435. If you have questions about the amount of your bill or need service, call the office at 936-372-9858.

Payment Address

G & W Water Supply Corporation
PO Box 1219
Waller, TX 77484