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Water Bill and Service

***Attention***Si Environmental, LLC is the Operator of your District's water system effective Monday, December 15, 2014. The first billing that Si Environmental will perform will be in January 2015. Customers will be MONTHLY billed with a due date of February 10, 2015.

Payment Options


PO BOX 4824
HOUSTON, TX 77210-4824

In Person

Si Environmental, LLC
6420 Reading Rd
Rosenberg, TX 77471
8:00 – 5:00
Monday – Friday



Billing Inquiries

Contact Customer Service @ Si Environmental, LLC
(832) 490-1600
For After Hour Emergency 24/7 Repair
(832) 490-1601

Request for New Residential Service

New Residential Service

Request for New Commercial Service

New Commercial Service Application


 Water Rate Order

Rate Order 2018

Water Quality Reports

Water Quality report 2017
Water Quality report 2014
Water Quality report 2013
Water Quality report 2012
Water Quality report 2011
Water Quality report 2010
Water Quality report 2009
Water Quality report 2008
Water Quality report 2007
Water Quality report 2006

Groundwater Reduction Plan Agreement

GRP Agreement with City of Houston


The content contained in this website is provided by Northwest Park Municipal Utility District for informal informational purposes only. The district provides no warranty as to the accuracy, reliability, completeness or timeliness of the information on this site or on any site which is linked, referenced or otherwise accessible via this website, and shall not be liable for damages of any kind which may be incurred by the use or access of any such information. This website and the information contained herein should not be relied upon or used as current information for the purposes of securities disclosure about the district, its financial condition, the bonds of the district, or property in the district. Persons should not rely upon information in this website when considering whether to buy, sell, or hold bonds issued by the district or whether to buy, sell, or hold property within the district. The district files official continuing disclosure information in accordance with the rules and regulations of the Securities and Exchange Commission. The district assumes no duty to update any information in this website at any time.