An aquifer is an underground layer of water-bearing permeable rock.

Aquifers are the first source of freshwater everywhere in the world.

Groundwater is more exposed to contamination than surface water.

The most important part of a well that allows for collecting water is:

In this Figure (1) is:

In this Figure (2) is:

In this Figure (4) is:

In this Figure (5) is:

A pump could be used for getting water out of the well. Do you think that there is a case where water can go up without pump?

In which well water can go to the surface without pump?

The unconfined aquifer is:

In confined aquifers groundwater is in direct contact with the atmosphere

Unconfined aquifers are more exposed to contamination due to human activities.

The figure presents some contamination sources of :

In this figure contamination 2 is related to:

In this figure contamination 1 is related to:

In this figure contamination 2 is related to:

In this figure contamination 3 is related to:

In confined aquifer groundwater is recharged by rainfall.

In confined aquifer water can come from very far areas

Groundwater flow can be more easily renwed in

In aquifers groundwater is usually at rest.

Contaminant transport occurs by