Si Environmental LLC serves as a water/ wastewater utility operator for Mission Bend MUD 1.
Si Environmental, LLC
Available 24 hours for emergencies. To report an issue click here.
Office Near You
6420 Reading Road
Rosenberg TX 77471
Phone: 281-490-1600
Email: customercare@sienv.com
Bill Payment
To register your account or to pay your bill online, click here
To Pay by phone: 888-946-0856
To Pay by mail:
- PO Box 4824, Houston, TX 77210-4824
- NO CASH ACCEPTED (Cashier’s or Personal Checks and Money Orders only)
To Pay by drop off:
- 6420 Reading Road, Rosenberg TX 77471
- Drop-off is Available Monday - Friday from 7:30 am-5:00 pm or Drop box is available 24/7
- NO CASH ACCEPTED (Cashier’s or Personal Checks and Money Orders only)
Service Rates:
Water Rate (Single Family Residential)
| $ 7.00 | Minimum Rate for Service |
| $ 0.65 | Rate per 1,000 gallons metered for usage between 5,001 gallons and 10,000 gallons |
| $ 1.00 | Rate per 1,000 gallons metered for usage between 10,001 gallons and 20,000 gallons |
| $ 1.50 | Rate per 1,000 gallons metered for usage between 20,001 gallons and 40,000 gallons |
| $ 2.00 | Rate per 1,000 gallons metered for usage above 40,001 gallons |
Sewer Rate (Single Family Residential)
| $ 14.00 | Flat Rate for Service |