Planting Over Greywater Seep Area

The zoning for our salad leaves is all wrong and is too far from the house in a vegetable garden set up by the previous occupants. It works for bigger veg but not for that super fresh prepared-right-before-eating leaf salad.  However, right at the back of our house, right under the kitchen window, having a little shade from scorching dessicating sun, is where all our greywater goes through various gravel beds and seeps away.  In the past 3 years of drought this has been the only patch of green (what a surprise!!).  Currently it's covered by grass/plantain/other 'lawn' plants but I'd like to sheet mulch it over the winter and grow the salad bar there next year.

But I read recently that food crops should not be planted in these sort of areas - it should only be grass.  Any thoughts on that?

I guess it depends on what is in the grey water and whether there will be any filtering before edible plant roots start sucking it up. If you're happy that what goes down the drain isn't harmful then why not?

by accident we have a sour sop (guanabana here) near our grey water system. Since we are very careful what we put down the drain, there has been no issues. Huge fruits, like 10 lbs!

Now I am trying bananas.

But it is good to search for bio-friendly soaps, etc.

Raised beds over the greywater drainfield should be no problem IN MY OPINION (and I'm not a pathologist).    Personally I would not plant directly on grade.

I wonder if a soil test would answer the question?

Depends on whats in the greywater but if its biodegradable and non-toxic and there is no greywater to plant contact then you should be fine

Also of note, fruits won't contain any soil contaminants, only the plant itself

Thanks all, I'm gonna go with it then.  We have only ever used earth-friendly products (to the great annoyance of guests who are not allowed to use their non-environmentally friendly 'normal' products when staying here) so that's no change for us.

bikemandan, that's interesting about fruit. I wonder why that is?