LOL ... your question reminds me of a Erma Bombeck's book, The Grass is Always Greener Over the Septic Tank. The answer is really, I don't know. Can't honestly say that I've ever heard of anybody doing so. I do remember that my Granny's kitchen sink drained directly out of the house into a kinda trench that went across the side yard. She had the most beautiful Tiger lilies that grew along there, but that was way back before they started banning phosphates in detergent.
Heh - the consensus seems to be, maybe not.
Thanks, folks.