 Okay. Okay. So you've got storm sewage or storm drains. Okay. And then you've got sewage, which is the dark. Yeah. Yeah. I got you. The dark water that you don't want mingling with the fresh water. Yeah. Yeah. So that makes sense. It's like if you go camping, you've got the gray water and the black water. Right. It's the same kind of system. Okay. Yeah. Well, see, you're teaching all of us something because that makes all the sense in the world. I guess I hadn't really thought about it. See, and then depending on your local laws, too, you can have gray water run off.