We have finished building two large mulch basins for our grey water system. Our kitchen sink drain feeds the mulch basin pictured below and a much larger mulch basin is for the shower and washing machine drains.
Our toothpaste, deodorant, soaps and cleaning supplies are made by us so they don’t contain the harsh chemicals of many store bought products.
The toilet waste is composted and is never introduced into the mulch basins.
Information on grey water benefits and system designs can be found here: http://oasisdesign.net/greywater