Water

Water Operator

Si Environmental, LLC
6420 Reading Rd.
Rosenberg, TX 77471

Office and Call Center Hours
Monday – Friday: 8:00 a.m. – 5:00 p.m.
Phone: (832) 490-1600
Emergency: (832) 490-1601
Email: CustomerCare@sienv.com

Set Up New Water Service

If you wish to set up water and sewer service with Northwest Park MUD, please contact the district operator Si Environmental, LLC at (832) 490-1600. The operator can determine if your address is within the service area and help complete the application process. The form below contains the information collected for application; it can either be filled out over the phone, sent in by mail, or emailed to CustomerCare@sienv.com. There is a connection fee and deposit required at the time of service request, and it must be collected prior to service being connected. This can be submitted by mail or by stopping by the Si Environmental, LLC office.

New Residential Service Application (PDF)
New Commercial Service Application (PDF)

Bill Viewing and Payment

Pay-By-Phone

• Make payments through Pay-By-Phone by dialing (888) 946-6702 for Northwest Park MUD
• 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.

Online Bill Pay

• Make Payments Via Our Online System
• 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.
Pay Online

Text and Pay

• Text and Pay Using Your Mobile Device
• Sign up for Paperless Billing and have the option of paying your bill directly from your email by clicking PAY NOW using Visa/MasterCard/Discover/AMEX (3% Convenience Fee*)– Will post next business day.

Auto-Draft

• Monthly Auto-Draft (drafted on due date)
• Credit Card (3% Convenience Fee*).
• Bank Draft ($1.00 Per Transaction*).
• Activation completion indicated by first invoice that states “DO NOT PAY”.

Walmart

• All Walmart Stores Internationally
• Convenience fee varies – see store for details*.

Western Union

• Western Union Quickpay Locations (various HEB, Kroger and Fiesta stores)
• Convenience fee varies – see store for details*- Will post within 2-3 business days.

Bank Bill Pay

• 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

• Lockbox Payments
• Checks sent via the USPS.
• This includes online bill-pay through your banking institution.
• Remittance address:
• P.O. Box 4824
  Houston, TX 77210-4824

Drop Box

• Drop Box Payments
• Drop-off location:
• 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.

Water Information

The Northwest Park Municipal Utility District, with the help of our Consultants, has the responsibility to maintain quality water supply to our customers, keep facilities well maintained and ensure system capacity meets demand.

The District currently has four (4) main water wells in the district along with partial ownership of another water plant outside the district. Water storage at these plants includes two elevated storage tanks and three ground storage tanks along with hydro pneumatic storage tanks. A fifth well is under construction to satisfy the growth and demand for water supply in the district.

Wastewater

Northwest Park Municipal Utility District owns and operates the wastewater collection system serving the district. The sanitary lines and sewage lift stations located throughout the district transport the sanitary waste to the regional sewage treatment plant located in Willowood. The District owns 70% of the capacity of this plant. The District is subject to the continuing supervision of the Texas Commission on Environmental Quality and the regulations of the Harris-Galveston Subsidence District.

Storm Water

Part of the infrastructure of a developed area is the inclusion of storm water drains and lines. This network of lines allows for rain water to drain to the appropriate flood control outfall system maintained by the Harris County Flood Control District. Any new development requires storm water detention facilities to be provided so as not to impact the downstream areas.

In the District there are several detention ponds that were included in the residential developments. In most cases the developers of the neighborhoods were responsible for the maintenance of the detention facilities until the neighborhoods were built out and then maintenance was turned over to the Home Owner’s Associations.

Recently, the District has assumed responsibility to maintain these detention facilities because of issues that arose due to lack of maintenance or improper maintenance in some of these detention ponds. Motorized vehicles such as three-wheelers and motorcycles are not allowed in these facilities as they can damage the turf which leads to erosion and costly repairs. The District has contracted with Champions Hydro-Lawn to maintain the District’s detention ponds. For more information on detention pond maintenance go to their website www.championshydrolawn.com.