Infiltration

Infiltration may refer to:

==Science, medicine, and engineering== Infiltration (hydrology), downward movement of water into soil Infiltration (HVAC), a heating, ventilation, and air conditioning term for air leakage into buildings Infiltration (medical), the diffusion or accumulation of substances or cells not normal to it or in amounts in excess of the normal Infiltration/Inflow, leakage of groundwater into sanitary sewers