If you are on private property there may a bit more latitude in doing that. We camp on 100 acres that we own. We have buried 30 gallon plastic drums with holes drilled in them and drain into them. The drums are surrounded by rock which allows for a good absorption area, this is likened to what is called a cesspool. The soil is sandy clay with small rocks so drainage is quite good. If you're more ambitious you can do the same with 55 gallon drums. We inserted PVC fittings to allow for the stinky slinky hookup. We use tank treatment in our holding tanks so the discharge has already been broken down to a degree. We do not have any close-by sources of ground water supply to infiltrate.
