It depends on what is in your wastewater of course, but most toxin typically concentrates in the leaves rather than the beans/corn. From there, the toxin remaining concentrates mostly in organs which can be discarded, rather than the meat. Each step in the food chain acts as a filter. You do not want to consume the crop directly and have buildup in your organs.
Also, eating food irrigated with waste sludge is a great way to catch e-coli. Treated waste is aerated and anaerobic pathogens like that largely neutralized, but it could still happen. If a hog is sick/dies, it's not as big a deal as a human.
Steps in the food chain are concentrators for toxins, not filters. Discarding organ meat isn't a given, though I suppose throwing away the liver in a lot of cases would be a solution. It seems like it is a risky play for relatively little gain, but I'm not a food regulator.
It would certainly help if you explained why you feel the need to snark about something you can't really know about. That way the comment might serve as a vehicle for interesting conversation, instead of whatever this is.
Also, eating food irrigated with waste sludge is a great way to catch e-coli. Treated waste is aerated and anaerobic pathogens like that largely neutralized, but it could still happen. If a hog is sick/dies, it's not as big a deal as a human.