Late to the game for this post, but has anybody worked out the grey water requirements? We were told that Snohomish county Wa State considers it black water, and you have to have the same requirements as a septic system. I was hoping they would allow a modified low use drain field of some kind. If so, then it negates any benefit other than composting itself. On our our property a septic system has to be a very expensive double mound system.
