Which is least likely to be impacted by runoff from a factory?

Groundwater

Groundwater flows through rock with a high porosity and a high permeability at a fast rate. The denser and less permeable  the rock is, the slower the groundwater moves. The greater the permeability of a rock, the faster the groundwater flows through it. Groundwater is water that is found in spaces and fractures in rocks, as well as in the sediment between the earth's surface. 

The first statement is