Inframark serves as a water/ wastewater utility operator for Harris County MUD 418
Katy Office
Attn: Mackenzie Johnson
2002 W Grand Pkwy N #100
Katy, TX 77449
Phone: (832) 467-1599
Email: CustomerService@inframark.com
For general phone inquiries, please contact Inframark Customer Service department Monday through Friday from 8:30 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.
If you are looking to signup for new service visit https://idologywebnet.azurewebsites.net/ServiceAddress/?district=HC418
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)
| $ 56.05 | Minimum Rate for Service |
West Harris County Regional Water Authority Groundwater Reduction Plan Fee
| $ 4.66 | Rate per 1,000 gallons of metered usage |