Customer Support
For billing and service requests
8am – 5pm Mon – Fri
(832) 490-1600
CustomerCare@sienv.com
After-Hour Emergency
(832) 490-1601
Contact Information
Email: info@hcmud278.com
Phone: (713) 860-6400
Address:
3200 Southwest Freeway.,
Suite. 2600,
Houston, Texas 77027
For water and wastewater related emergencies or questions about your bill please contact Si Environmental customer service at (832) 490-1600. For legal inquiries and public information requests contact Allen Boone Humphries Robinson LLP at (713) 860-6400. For all other inquiries you may use the form below.