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Rate schedule for services are available in the Rate Order.

Customer Service Agreement

You may submit the agreement via the following:
Email: CustomerCare@SiEnv.com
Fax: (832) 490-1502
U.S. Mail: Si Environmental 6420 Reading Rd. Rosenberg, TX 77471

Latest News

Never Forget to Pick Up Your Pet Waste!
Posted: Apr 24, 2023 1:52pm

Visit CleanBayous.org

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Subfreezing Temps Beginning Thursday, December 22nd
Posted: Dec 22, 2022 8:05am

Forecast indicates subfreezing temps beginning at 6pm and lasting up to 44 hours. Avoid exposure and protect your pipes. For water and wastewater related emergencies please contact Si Environmental customer service at (832) 490-1600. After-hours emergency service can be reached at (832) 490-1601.

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Water Service Update
Posted: Nov 29, 2022 3:23pm

Cimarron Municipal Utility District does not receive water from the City of Houston. Water provided by the District is safe to drink and is not affected by the City's boil water notice. Any official notices about changes in the District's water system will come directly from the District and the District's operator, Si Environmental.