S.C. Code § 31-3-1540
A housing authority may, notwithstanding anything to the contrary contained in this chapter and Chapter 11 or in any other provision of law, agree to any conditions attached to Federal financial assistance relating to the determination of prevailing salaries or wages, payment of not less than prevailing salaries or wages or compliance with labor standards in the development or administration of projects, and include in any contract let in connection with a project a stipulation requiring that the contractor and any subcontractors comply with the requirements as to minimum salaries or wages and maximum hours of labor and any other conditions which the Federal Government may have attached to its financial aid of the project.
S.C. Code § 31-3-1540