How deep must a well penetrate to provide a reliable supply of water?

Question

How deep must a well penetrate to provide a reliable supply of water?

Answer 1

I'VE HAD THIS PROBLEM AND FOUND THAT IN MOST AREAS ITS AT LEAST 150 FT TO 200 TO GET MORE WATER AND LESS DIRT.IT ALSO DEPENDS ON THE DISTANCE FROM YOUR WELL AND THE NEAREST WATER SOURCE(RIVER).

Answer 2

It will depend on where you are and the depth of the groundwater aquifer zone you are drilling in.

You can contact your local US Geological Survey office and request a water well survey for your county.

It will denote the location of the well, the depth of the top of the screened interval and the production of the water well itself.   From this, you can determine the depth of the well you want to drill and where to set your screened interval.

But to answer your question, it is about 20 feet into the aquifer - if the aquifer can sustain a 100 gpm pumping rate.

Answer 3

As for how many meters, this will vary from place to place because the aquifers are found at different depths.  The well must reach beneath the lowest depth the water table is expected to reach.  The water table is the upper limit of the aquifer.