Artesian wells are located 1.confined aquifers2.unconfined aquifers3.perched aquifers4.impermeable aquifers

1. confined aquifers

Explanation:

Artesian well is a type of deep tubular well that is dug underground to collect water for consumption. This type of well is located in confined aquifers.

What distinguishes the artesian well from the others is that it is not necessary to use a pump to make the water rise, as in the case of the cistern. The type of underground reservoir makes the water that passes through the tube spurts on the surface naturally.

The underground reservoir that has the necessary characteristics for drilling an artesian well is the result of very specific geological conditions. The confined aquifer, as this type of deep groundwater is called, results in gushing wells. This type of reservoir is located between impermeable layers of the subsoil.