The use of microorganisms for the degradation of contaminants.

In Situ Bioremediation Page
Information about the biological treatment of contaminants in the subsurface, typically in groundwater.

A Systematic Approach to In Situ Bioremediation in Groundwater (ISB-8)
Section 1.3 (What is In Situ Bioremediation?) and Figure 1-1
Describes the application of biological treatment to the cleanup of contaminants of concern.