Fort Bend County Municipal Utility District No. 151 (the "District") is a municipal utility district that was created in 2004 by order of the Texas Commission on Environmental Quality. The District contains approximately 1,405 acres of land and is located in northern Fort Bend County approximately 30 miles west of downtown Houston. The District is located wholly within the exclusive extra-territorial jurisdiction of the City of Fulshear.

The District has constructed and operates water, sanitary sewer, drainage, park, and fire protection facilities to serve Firethorne, a master planned community.