I’m purchasing a property which will not perc for a conventional septic system. There are alternative septic systems that are possible, but also I’m wondering, what about an alternative system altogether? Does anyone have experience with handling greywater and waste separately (say composting for waste) in a home with several members?
If you have time to dive down a rabbit hole, check out what the huts and shelters do along the Appalachian Trail. They manage a lot of waste for a lot of hikers using a mix of composting and septic techniques, depending on the location and type/quantity of waste they’re managing.
Backcountry sanitation manual
AMC hut operations info
Edit: These facilities are generally on public lands, not near towns, so I assume the permitting requirements are very different than what normal homeowner would face.