There is also "metabolic water", produced by our own metabolic processes.
And behind Pollack there was Gilbert Ling. There was a buried interview video of Ling made before his death, where he described what had been done to him to attempt to silence him, but it is now gone from the Internet, disappeared sometime in 2024-5. I learned about it and watched it as a contributor to a Kickstarter for a documentary, years ago. Pollack was interviewed as well, as I recall. All gone now.