Si Environmental LLC serves as a water/ wastewater utility operator for Windfern Forest UD.
SiEnvironmental, LLC
Available 24 hours for emergencies. To report an issue click here.
Office Near You
9431 Rio Grande Dr
Houston, TX 77064
Phone: 281-807-9500
Email: customercare@sienv.com
Bill Payment
To register your account or to pay your bill online, click here
To Pay by phone: 281-849-3545
To Pay by mail: Windfern Forest UD, P.O. box 173 Dept 55036 Houston, TX 77001-0173
To Pay by drop off: 9431 Rio Grande Dr Houston, TX 77064. Drop-off is Available Monday- Friday from 7:30 am-5:00 pm or Drop box is available 24/7 (Will be posted within 1-2 days. Check or money order only).
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 |