Pump and treat, bioslurping

These are physical methods to treat and capture contaminated groundwater, rather than air.

They are especially used when there are floating or dissolved contaminants that can either be decanted into wells, or need to be brought to the surface and put through a water treatment system in order to be cleansed.

Dual Phase Extraction (DVE) is a high-vacuum technique that extracts both air and water residue.