In this subchapter:
(1) "Contaminant" includes:
(A) solid waste;
(B) hazardous waste;
(C) a hazardous waste constituent listed in 40 C.F.R. Part 261, Subpart D, or Table 1, 40 C.F.R. Section 261.24;
(D) a pollutant as defined in Section 26.001, Water Code; and
(E) a hazardous substance:
(i) as defined in Section 361.003; or
(ii) subject to Subchapter G, Chapter 26, Water Code.
(2) "Potable water" means water that is used for irrigating crops intended for human consumption, drinking, showering, bathing, or cooking purposes.
(3) "Response action" means the cleanup or removal from the environment of a hazardous substance or contaminant, excluding a waste, pollutant, or substance regulated by or that results from an activity under the jurisdiction of the Railroad Commission of Texas under Chapter 91 or 141, Natural Resources Code, or Chapter 27, Water Code.