Boil the ever living piss out of it. Ever seen "BEER WARS"? in it. Not sure who. Doesn't say in film. But, they took water out of a duck pond that had no filtration. But high in. well, piss, crap, bugs & other nasties. Cholera, E-coli. They boiled the hell out of it. Served it. All was well. Plus,Me sister in law has to take a food server class every year, for the last 15 yeras or so for her business. I think by the Gov. They tell her 165° kills everything. Disclaimer. 25518. Is not a licensed anything. Do what you will with yer grains. They be your grains. And get a. Cat.