Inframark serves as a water/ wastewater utility operator for Harris County MUD 489.
Inframark Corporate Office
Attn: Mackenzie Osborne
2002 W Grand Pkwy N #100
Katy, TX 77449
Phone: (281) 579-4500
Email: MUDCustomerService@inframark.com
Mailing Address
Harris County MUD #489
PO Box 4728 DEPT 60489
Houston, TX 77210-4728
**Please make all payments payable to Harris County MUD 489**
If you are looking to signup for new service visit https://idologywebnet.azurewebsites.net/Welcome/?district=HC489
Customer Support
For billing, service requests and other inquiries us the following:
General Customer Service Number: (281) 579-4500
Customer/Billing Inquiries Email: MUDCustomerService@inframark.com
For general phone inquiries, please contact Inframark Customer Service department Monday through Friday from 8:00 a.m. to 5:00 p. m., with the exception of holidays.
Our payment window hours are Monday through Friday from 8:00 a.m. to 5:00 p.m.
For after-hour emergencies, please contact Inframark Dispatch team at (281) 398-8211.
Service Rates:
Water Rate (Single Family Residential)
| $ 18.00 | Minimum Rate for Service |
| $ 1.75 | Rate per 1,000 gallons metered for usage between 5,001 gallons and 10,000 gallons |
| $ 2.00 | Rate per 1,000 gallons metered for usage between 10,001 gallons and 20,000 gallons |
| $ 2.50 | Rate per 1,000 gallons metered for usage above 20,001 gallons |
Sewer Rate (Single Family Residential)
| $ 63.29 | Minimum Rate for Service |
West Harris County Regional Water Authority Groundwater Reduction Plan Fee
| $ 4.66 | Rate per 1,000 gallons of metered usage |