Just beware of the Borden Environmental Preservation Enforcement Bureau and the Colorado River Watershed Authority. You don't want them to come down hard on you.
If you decide to put in a gray water "Dry Well", just dig a hole about 8 feet deep and 5 or so feed square. We lined ours with concrete cinder blocks and poured a slab of concrete over it with a small access hole in in. The bottom was just sand/gravel. The gray water pipe came in through the side right below the top.
