This subchapter does not apply to:
(1) a private water well drilled:
(A) on a parcel of land that:
(i) is 10 acres or more in size; or
(ii) is qualified open-space land, as defined by Section 23.51, Tax Code;
(B) within the boundaries of a groundwater conservation district;
(C) within the boundaries of a subsidence district other than the Harris-Galveston Subsidence District; or
(D) incident to the exploration, development, or production of oil, gas, or other minerals; or
(2) a public water system that has been permitted under rules adopted by the Texas Commission on Environmental Quality.