1) Groundwater is water located underground that is an essential natural resource for humanity. 2) It is replenished by precipitation infiltrating the ground and collects in aquifers, which are permeable underground layers of rock or sediment. 3) Groundwater management is important to prevent overexploitation of aquifers and pollution of this critical resource, as some aquifers have already been exhausted from overuse.

1. Groundwater, a natural ressource to preserve. NABYL Sarah DUCRET Camille PROMPT Jean-Matthieu BERNIGAUD Camille

4. Water Table Water table comes from water falling down from atmosphere and taking several ways to reach seas. A third of these precipitations reach seas. Another part infiltrates the ground and forms the groundwater. What we call the water tables is the ‘surface’ of the groundwater. They are areas saturated by water situated in low depth and accessible by drilling. It supplies drinkable water but it’s also the part of groundwater the most exposed to pollution