The present paper describes some theoretical aspects concerning the transport of liquid pollutants in the soil and in the aquifer. The pollution of the geological environment represents the modification of the physical, chemical and biological properties of the soil, altering and restraining the soil's usage properties for its constituent elements (soil, geological formations, phreatic aquifers, deep aquifers). The pollution of the geological environment uses water as its main transport agent, in its entire global circuit: in the atmosphere (vapors and precipitation), at the level of the topographical surface (surface water flowing) and in deep levels of hydrostructures (subterraneous flowing).
