View and pay your bill online!

To Review or Pay your bill online...

Keep in mind that delinquent payments made online could take 24 hours to process and do not guarantee immediate reinstatement of service once disconnected.


Click Here!



  • Make payments through Pay-By-Phone by dialing 713-881-0675 Monday through Friday from 8:30am-4:00pm.
    • You will need your checking account information and water billing account information ($3.95 transaction fee) Will post next business day.


  • Make payments via the link above...
    • Visa/MasterCard/Discover (5% Convenience Fee*) – Will post next business day
    • Electronic Check ($1.00 transaction fee*) - Will post within 2-3 business days


  • Monthly Auto-draft (drafted on due date)
    • Credit Card (5% Convenience Fee*)
    • Bank Draft ($1.00 Per Transaction*)
    • Activation completion indicated by first invoice that states "DO NOT PAY"


  • All Walmart stores internationally
    • Standard processing (delivered in 3 business days) - $.88*
    • Next Day processing (delivered next business day) - $1.88*


  • Western Union Quickpay locations (various HEB, Kroger and Fiesta stores)
    • $1.50 Transaction Fee* - Will post within 2-3 business days


  • Bill-pay through your banking institution **
    • Please be sure to include your account number when setting up bill-pay through your banking institution (up to 10 days for processing from the date that the bank issues the payment)


  • Lockbox
    • Checks sent via the USPS
    • This includes online bill-pay through your banking institution
    • Remittance address:

PO Box 4824

Houston, TX 77210-4824


  • Drop Box

6420 Reading Road

Rosenberg TX 77471



* - These charges are third party transaction charges that are not associated or collected by Si Environmental, LLC. or your water utility district.

** - Online Bill-pay through your banking institution generally involves your bank utilizing a third party to create a check that is sent to the address that you specify.  Si Environmental, LLC. has no control over the check creation and mailing process for this service.  All payments are processed within 24 hours of receipt by Si Environmental, LLC.



Questions? Please feel free to contact us at;

832-490-1600 (local dialing)

1-877-382-7414 (toll free)