Tex. Spec. Dist. Code § 8848.151
The district may impose an ad valorem tax at a rate not to exceed 20 cents for each $100 of assessed valuation to pay any part of the bonds or notes issued by the district if a majority of the voters approve:
Added by Acts 2009, 81st Leg., R.S., Ch. 1139 (H.B. 2619), Sec. 1.05, eff. April 1, 2011.