Bill Payment Information

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.

Water Rate Info

Use the chart below to estimate your water bill.
Note: Legend items can be toggled by clicking on them.

Rate Schedule

Below shows the water rate schedule.
A copy of the current rate order is available from the Public Documents page.

20.50Minimum monthly charge per Equivalent Single Family Residential equivalent connection for water as determined by the District's engineer (includes first 1,000 gallons usage per User)
1.25Water rate per 1,000 gallons metered water for usage between 1,001 gallons and 5,000 gallons
2.25Water rate per 1,000 gallons metered water for usage between 5,001 gallons and 10,000 gallons
3.25Water rate per 1,000 gallons metered water for usage between 10,001 gallons and 20,000 gallons
4.25Water rate per 1,000 gallons metered water for usage over 20,000 gallons