Thanks, Mike. When I was growing up in the 1930s in Mississippi, we had
a number of free-flowing Artesian wells around. We actually had one in
the barn lot, which had a good stream, and a number in our small town.
But they all dried up. So, I have no experience with your deep well
systems. I appreciate the details.
Jim Nichols
Tullahoma, TN USA
On 3/7/2016 11:34 AM, Mike Lazzari wrote:
I agree with your number, if it is Atesian. What is the pressure at the
surface? Will it require a pump?
Oh yes. The guys dropped a nice 1 1/4hp SS Grundfos in the hole after
the rig left.
<http://www.grundfos.com/products/find-product/sp.html>
The drilling is done in 20' steel sections + 5' with the bit. The pump
is connected to 20' lengths of schedule 80 PVC and so ends up just up
off the bottom. No cutting. The water level usually varies with the
time of year and the hole acts as a long skinny reservoir. My well has
been low priority since I do have water. Al (driller) has been
concentrating on wells that were sucking air during the last couple of
dry years. A lot of old wells need to be deepened. The pump is pushing
against 425' or so of head max (which is what you have to design for),
less whatever assist you get from the water column, up to the pressure
tank at the house set @ 70/50lbs. ~15lbs/30' + line loss. Hence the 1
1/4hp pump. I'm currently using a 3/4hp jet pump set at 60/40 now but
only pushing up about 35ft. Still that means only 25lbs dynamic
pressure at the house so I have a little centrifugal Davie booster
pump which gets us to about 80lbs. Too much really and I should have
installed a pressure reducer. But I like fire hose showers that hold
you up against the wall :)
We've had the winter that CA was supposed to get :( so the ground is
too wet to dig ditches yet. Well, actually I could dig the short ditch
for the water/electrical lines but I want to rent the excavator for a
week and do some other work around the place while I'm at it. We'll
probably share some hours with the neighbors too.
Mike
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