Extra Water and Grey Tank
We camped in a campground near Yellowstone for a week, with no water or sewage connectons, and no dump station. I had a 30 gallon tank for water in the back of the truck, and another 30 gallon tank for gray water. I would fill the 30 gallon tank at the one campground spigot, and use it to fill the trailer tank. I hooked a pump to the grey water outlet and pumped it into the truck grey tank. I would drive somewhere away from water sources and dump the grey water. My darling sister-in-law would use almost 30 gallons for a shower.
I know I'll get people telling me that dumping gray water iis unacceptable, but I've had State EPA employees tell me it was o.k. I just didn't want to dump it near a lake or stream. When I worked for the Forest Service in AZ, we got a permit to spray sewage effluent out in the forest. In third world countries, they call human waste "fertilizer". Detergents contain phosphates, which are also fertilizer. That is sometimes a problem in lakes and streams because it causes algae blooms. In Lake Powell, all of the houseboats dump their grey water into the lake. Desert lakes tend to have a lack of nutrients. The fishing got much better once the number of houseboats increased. At Lake Mead, the fishing club used to dump fertilizer into the lake to make the fishing better.
At one campground in Montana, they had a hookup for the grey water that watered the trees.
All that said, hundreds of campers dumping in the same place all the time, can be a problem, so I don't add to that.
2009 Roo 21ss + 2007 Superduty 6.0