The water cycle
Water moves constantly around the earth. But it can take up to ten years to replenish our groundwater naturally.
When rain falls to the ground, the water does not stop moving. Some of it is used by plants, trees, animals and humans. Some evaporates and returns to the atmosphere. Some flows along the land surface and down to streams and lakes and ends in the oceans.
And some water will take the long journey and slowly trickle down through the layers of soil, sand and clay; meeting in rock formations called aquifers, replenishing our groundwater.