Online Billpay
To register your account online or to pay your bill, click here
Customer Support
For billing, service requests and other inquiries use the following:
General Customer Service Number: (832) 490-1600
Customer/Billing Inquiries Email: customercare@sienv.com
For general phone inquiries, please contact our Customer Service department Monday through Friday from 8:00 a.m. to 5:00 p. m., with the exception of holidays.
Our payment hours are:
Main Office
6420 Reading Road
Rosenberg, TX 77471
Phone: 832-490-1600
Monday through Friday from 8:00 a.m. to 5:00 p.m.
For after-hour emergencies, please contact our dispatch team at 832-490-1601.
