Contact Us

For water and wastewater related emergencies or questions about your bill please contact Si Environmental, LLC customer service at (832) 490-1600. For legal inquiries and public information requests contact Coats Rose. P.C. at 713-651-0111. To contact the board and for all other inquiries, you may use the form below.

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Customer Support

For billing and service requests from 8:00am–5pm Monday–Friday

(832) 490-1600
customercare@sienv.com

After-Hour Emergency

(832) 490-1601

Additional Contact Information:

Mailing Address
9 Greenway Plaza, Ste. 1000
Houston, TX 77046

Phone: (713) 651-0111

Email: hchiali@coatsrose.com