|
It
means she is drinking water from a well that taps an
aquifer that is "confined". This aquifer is water-bearing
rock below ground that is surrounded by other rock or
material that does not allow water to pass through. So,
the water in this aquifer is squeezed by the other rocks,
creating pressure in the water-bearing aquifer. When an
artesian aquifer is tapped by a well the pressure pushes
the water up the well, sometimes all the way to the
surface, creating a flowing well. Imagine it as a very wet
sponge contained in a closed plastic bag. Put a straw
through the bag into the sponge, hold the bag tightly
around the straw, and SQUEEZE - that would be artesian
water squirting you in the face. |
