Tex. Educ. Code § 45.101

The proceeds of bonds issued by school districts for the construction and equipment of school buildings in the district and the purchase of the necessary sites for school buildings may be used, among other things, to pay the cost of acquiring, laying, and installing pipes or lines to connect with the water, sewer, or gas lines of a municipality or private utility company, whether or not the water, sewer, or gas lines adjoin the school, so that the school district may provide its public school buildings the water, sewer, or gas services.