Yes on the frost free lines. I'm interested in this dry riverbed idea - but don't know enough about it. I still think it might be fairly easy to tie into the current sewer line based on location - but I'm no plumber. Thanks for your input.
Sure thing, and sorry for the typos.
Tying into your main drain is an option, but you'll really only be putting soapy water in it. This is called greywater, and you can either make your own greywater drywell drain system, setup a basic irrigation system, or a number of other options. (Not sure what can be permitted down here for greywater systems)
This may help:
http://sfwater.org/modules/showdocument.aspx?documentid=55
http://greywateraction.org/content/about-greywater-reuse
The dry riverbed is basically a pit with a rubber liner (like making a pond), but filled with stone. There's never any "pooling" water when you install a drain from the dry riverbed to whatever type of water disposal system you choose.
Keep in mind things like leaves, those little helicopter thingys, and other small plant matter when building one, as they can "fill" the drainage gaps in the stone if not upkept (of course, this can happen if you choose to install a typical shower drian). They do look very nice and natural though.
Here's an example of a dry riverbed. Now imagine a wooden structure over top of it and some large, leafy bushes around the shower.
View attachment 102495
Now you've got me interested in one, and I'm scoping out my house for a place to put one.
