So I'm not a chemist or a doctor, but I would think there would be a way to test water for a protein. It seems like having a lab work would be a lot better way of giving proof to a theory. Getting water samples would be easy. I didn't really see any of that in the presentation. https://byjus.com/biology/test-for-protein/#:~:text=Add%201%2D2ml%20of%20ninhydrin,presence%20of%20protein%20is%20confirmed. Snake venom toxins are usually named either after the snake venom that they were first identified in or after their primary pharmacological effect on the victim. Snake venoms are approximately 90% water and, in addition to enzymatic and nonenzymatic proteins, can contain lipids, carbohydrates, and biogenic amines. Can't say for sure butI think it would show up . Then to find out what the protein is you might use this route. The most common method used to study protein structures is X-ray crystallography. With this method, solid crystals of purified protein are placed in an X-ray beam, and the pattern of deflected X rays is used to predict the positions of the thousands of atoms within the protein crystal. Also the copper pipes most water goes through might break down proteins as well https://pubmed.ncbi.nlm.nih.gov/15784956/#:~:text=Copper%20%5BCu(II)%5D%20is,DNA%2C%20proteins%2C%20and%20lipids.