Your Source for Quality Water & Utility Services

Water Payment Options

Make payments online Click Here

Visa/MasterCard/Discover/AMEX (3% Convenience Fee*) – Will post next business day
Electronic Check ($1.00 transaction fee*) - Will post within 2-3 business days

Paperless Billing

Sign up for Paperless Billing via the link above and have the option of paying your bill directly from your email by clicking PAY NOW.
Visa/MasterCard/Discover/AMEX (3% Convenience Fee*) – Will post next business day

Automatic Monthly Payments

Login online or contact First Billing at 855-270-3592 to signup for auto payments. You can select your payment method, pick your date, and payment amount. Each month you will receive emails confirming the payment was successful.
Visa/MasterCard/Discover/AMEX (3% Convenience Fee*)
Electronic Check ($1.00 Per Transaction*)

Pay by Phone

Make payments through Pay-By-Phone by dialing 888-944-2578.
You will need your Customer Account Number and payment information.
Visa/MasterCard/Discover/AMEX (3% Convenience Fee*) – Will post next business day
Electronic Check ($1.00 transaction fee*) - Will post within 2-3 business days

Text and Pay using your mobile device

Register your account via the online portal to sign up for Text and 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)

Pay by Mail

Checks sent via the USPS
This includes online bill-pay through your banking institution

PO Box 4824
Houston, TX 77210-4824


6420 Reading Road
Rosenberg TX 77471

Questions About your Bill

Contact Si Environmental
832-490-1600 (local dialing)
1-877-382-7414 (toll free)

* 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.

Latest News

Katy Area Economic Development Council - Fall 2019 Educational Event
Posted: Sep 14, 2019 4:27pm

Join the free seminar on Harris County Emergency Services District No. 48 safety programs on Thursday, September 26th, 2019 from 6:00 PM till 7:30 PM. This event will be held at the Fry Road MUD Facility, 20111 Saums Road, Katy, TX 77449.

Click here for more details.

Smoke Alarm Blitz (Video)
Posted: Jul 15, 2019 8:42pm

Harris County ESD 48 in partnership with the American Red Cross and Cimarron MUD plan to conduct additional smoke alarm blitz' in targeted subdivisions throughout Cimarron MUD for the next two years. Remember to replace smoke and carbon monoxide alarms older than 10 years. The manufacture date is typically printed on the back of the alarm.

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WHCRWA Fee increase
Posted: Dec 14, 2018 11:04am

Effective January 1st, 2019 the WHCRWA fee for ground-water pumpage will be increased to $2.95/1000 gallons while the surface-water fee will be increased to $3.35/1000 gallons.

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