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# Artesian

(Redirected from Artesian well)
Geological strata giving rise to an Artesian well

An artesian aquifer is a confined aquifer whose water is pressurized. Water will thus flow out of an artesian water well without pumping.

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## Why is a well artesian?

Because the water table at its recharge zone is at a higher elevation than the head of the well.

Pascal's Law predicts the hydrostatic pressure:

$P = \rho \cdot g \cdot (z_{recharge}-z_{wellhead})$

where ρ is the density of the fluid, g the acceleration due to gravity, and z is the elevation.

## Origin

Artesian wells are named after the town of Artois in France, where the first one was drilled by Carthusian monks in 1126. [1] (see also )