 So blue-green algae is bad for livestock, of course, right? And we also don't want any humans in contact with that. If you're looking at an underground well on your farm, there's a possibility of leaching. Maybe you've had some fertilizer or herbicide contamination, something like that, or pesticide, I should say, that's somehow moved through the groundwater into your well system, or you've had a spill. That could be the concern.