[ishoot308]

Originally Posted by Descant

The amount of soil filtration depends on the type of soil. To the extreme, if you drain the shower onto ledge, no filter. The same would essentially apply if the ledge is only a foot down, etc. If you have lots of sand and grvel, that's a huge filter.
I think, officially, even gray water is supposed to go into an approved septic or sewer. While you may be conscientious, if you ever want to sell, or have a building inspection for some other project, the inspector may not be happy. It may be that for the low volume and the type of discharge, the "approved" system could be very simple, as described in earlier posts, i.e. a DIY system.
If you're relocating, can you discharge into your existing septic somehow?

How is this worse than an outhouse with a dug hole??... Serious question...

Dan