Online Billpay
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Customer Support
For billing, service requests and other inquiries use the following:
General Customer Service Number: 281-807-9500
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 281-807-9500.
Service Rates:
Water Rate (Single Family Residential)
| $ 15.25 | Minimum Rate for Service |
| $ 2.30 | Rate per 1,000 gallons metered for usage between 5,001 gallons and 15,000 gallons |
| $ 2.92 | Rate per 1,000 gallons metered for usage between 15,001 gallons and 20,000 gallons |
| $ 4.27 | Rate per 1,000 gallons metered for usage between 20,001 gallons and 30,000 gallons |
| $ 4.75 | Rate per 1,000 gallons metered for usage above 30,001 gallons |
Sewer Rate (Single Family Residential)
| $ 20.25 | Minimum Rate for Service |
| $ 0.61 | Rate per 1,000 gallons metered for usage above 5,001 gallons |