Tex. Water Code § 7.202

In determining whether a defendant who is an individual knew that the violation placed another person in imminent danger of death or serious bodily injury under Section 7.168, 7.169, 7.170, or 7.171, the defendant is responsible only for the defendant's actual awareness or actual belief possessed. Knowledge possessed by a person other than the defendant may not be attributed to the defendant. To prove a defendant's actual knowledge, however, circumstantial evidence may be used, including evidence that the defendant took affirmative steps to be shielded from relevant information.