The district may join and pay dues to an organization that enjoys tax-exempt status under Section 501(c)(3), (4), or (6), Internal Revenue Code of 1986, as amended, and perform services or provide activities consistent with the furtherance of the purposes of the district. An expenditure of public money for membership in the organization is considered to further the purposes of the district and to be for a public purpose.
Tex. Spec. Dist. Loc. Laws § 3829.106