OK. 90% of the septic fields I put in were 'mound' type fields. This puts the field above the surrounding area, surrounded by sand. The liquid soaks into the sand and disperses. I'm sure some of it soaks 'down' as well as up and out. The theory here is that it disperses (since it is often hard clay and the sand mound lets it spread out and evaporate up while the clay holds it from seeping down). Different areas different issues.
Still, if it *does* seep down, is distance really an issue?
And the 'fool who does the well' is a totally different guy than the guy who does the septic field. At least up here it is. Well guy has a drill truck. Septic is more an excavation guy with heavy equipment.


Make your sound your own!
.. I do not work here, but the benefits are still awesome