Subsurface soil absorption definition

Subsurface soil absorption means a process which utilizes the soil to treat and dispose of sewage effluent.
Subsurface soil absorption means a process which utilizes the soil to treat and dispose of effluent from a treatment works. (Also see "Subsurface drainfield" in § 32.1-163 of the Code of Virginia).
Subsurface soil absorption means a process which utilizes the soil to treat and dispose of effluent from a treatment works.