I highly doubt that every grocery chain uses it. All you have to do is ask the butcher at your local store. And you don't hve to go organic, you just have to find a supplier that doesn't use the process, which shouldn't be that hard.
You could also just buy your own meat grinder and make your own ground beef, you control the fat and cut of meat used (think brisket
). Can even use a food processor with chopping blade if you don't want to spring for a grinder, but the texture can very quickly go from firm to mush if you're not careful.