Separating toilet waste from bath water.

[kartking]

Currently, I have the clothes washing machine, dish washer, and kitchen sink piped into my greywater system. The house is on a concrete slab. How can I pipe the bath water drain to the greywater system, but continue using the septic tank for the toilet? Thank you.

[markgrossman]

in brad lancasters rainwater harvesting book, volume 2, he has a neat solution to use a mini siphon pump device one can easily build to get the water outside to a tree. the tub should be near an outside window for this to work