Online Billpay
To register your account online or to pay your bill, visit sienv.firstbilling.com
Customer Support
For billing, service requests and other inquiries us the following:
General Customer Service Number: (832) 490-1600
Customer/Billing Inquiries Email: CustomerCare@sienv.com
For general phone inquiries, please contact Si Environmental Customer Service department Monday through Friday from 8:00 a.m. to 5:00 p. m., with the exception of holidays.
For after-hour emergencies, please contact Si Environmental Dispatch team at 832-490-1601.
Service Rates:
A copy of the current rate order is available from the Documents page.
Water Rate (Single Family Residential)
| $ 25.10 | Minimum Rate for Service |
| $ 1.25 | Rate per 1,000 gallons metered for usage between 1,001 gallons and 5,000 gallons |
| $ 2.25 | Rate per 1,000 gallons metered for usage between 5,001 gallons and 10,000 gallons |
| $ 3.25 | Rate per 1,000 gallons metered for usage between 10,001 gallons and 20,000 gallons |
| $ 4.25 | Rate per 1,000 gallons metered for usage above 20,001 gallons |
Sewer Rate (Single Family Residential)
| $ 35.10 | Flat Rate for Service |
GRP Fee
| $ 2.96 | Rate per 1,000 gallons of metered usage |