not sure what you mean by artesian well. around here, it is a well
where the water comes to the surface naturally. only occurs on very
specific sites. also in minnesota, the health department regulates
wells. i believe shallow wells aren't even legal, since they draw on
shallow groundwater which can be contaminated. (i believe they have to
be at least 50' deep).
Artesian wells flow freely without a pump. They are not necessarily
shallow though. The source could be several hundred feet underground
and comes to the surface due to fractures in the bedrock.
In many areas, but not all, of the country, artesian wells are water
wells that have pressure behind them. A pump may or may not be
required, although one is usually installed to get the flow rate and
pressure high enough for typical household use.
For instance much of Southeast texas sits on an aquifer, an artesian
source. To tap into the aquifer, wells must be dug to a minimum of 250
ft, and to be safe, 300 feet
Hi. Here in Newfoundland, Canada and Artesian well is drilled down at
usually around 200', a casing is put in the drilled hole and water is
pushed up through the ground using a pump in most cases.
Marson's definition is the correct one. To be accurately called an
"artesian" the water must reach the surface on its own, no pump. What
you are referring to is a "drilled well".
Back to your original question. Shallow, dug wells are risky for two
reasons (both already mentioned.
Unreliable flow unless you luck out and hit a very shallow aquifer.
The equipment needed for both wells is the same. Pump, pressure tank,
control equipment, pipe, wire. Of course the deep drilled well will
use more pipe and wire but that is the only difference (other than
I was speaking to a well driller and he said that the water at 300'
could be just as good or just as bad as the water at 25'. He really
couldn't give me the "this is why you should go with a drilled well"
On 16 May 2006 07:31:27 -0700, email@example.com
dug well - most of the contaminants are what you and your neighbor
dump on the ground.
drilled well - contaminant source expands to unknown distance and into
It is generally, but not always, the case that deeper drilled wells
get into older, less contaminated by man water. OTOH, they are more
likely to pick up mineral contamination because of the longer path to
where you tap it.
Deeper you go, yes the longer its has been there and the more likely it
has dissolved limestone and other minerals in it. Hard water, foul
tasting/smelling water are all possible. bacterial contamination
unlikely. Salt intrusion is possible in areas close to salt water.
Water at 300 feet is much less likely to be contaminated with bacteria
from animal waste products (including humans) than water at 25 feet.
Water at 300 feet is much less likely to be contaminated with
agricultural waste products (fertilizers) than water at 25 feet.
Iron, Sulfur, and Calcium Carbonate content are what the driller was
talking about. How does the water TASTE was the driller's concern.
On 16 May 2006 04:42:20 -0700, firstname.lastname@example.org
If it is pumped, it is not an artesian well... An artesian well can be
drilled or natural, but the key ingredient is that it must be under
enough natural pressure for the water to come to the surface on its
According to the US Geological Survey, any subsurface water that is
under pressure underground is artesian, even if the pressure is not
strong enough to cause the water to flow to the surface.
The artesian surface needs only to be moderately above the confining
rock layer in order to be classified as artesian. Wells in Brunswick
Georgia in the 1880s were so strongly artesian that they could supply
multistory buildings without pumping, however today, almost all of these
wells require pumping to get the water to the surface as there has been
so much depletion of the aquifer.
Out at my cabin, I have a drilled well. Plenty of water all season, next
door neighbor has an artesian well plenty of water most of time. His
water is better quality than mine. Both work very well.
drilled wells can be artesian wells if a well is drilled to a 300 ft
depth and the static water level is at 200 feet it is a artesian well
the water is pressurized enough to bring it up to 200 ft. a well that
has water running out the top is a flowing artesian just my 2 cents
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