In this subchapter:
(1) "District" means a district or authority created under Section 52, Article III, or Section 59, Article XVI, Texas Constitution, that has the authority to regulate the spacing of water wells, the production of water wells, or both.
(2) "Fund" means the leaking water wells fund created under Section 28.103.
(3) "Program" means the leaking water wells program established under Section 28.104.