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Posted by M Q on July 25, 2007, 6:37 pm
The Reverend Natural Light wrote:
> I'm thinking about having a new well drilled to replace my old muddy
> well. The old one is 6" drilled with the pump at 70'. I think the
> casing is cracked or something. It's almost 40 years old. Any way,
> I'm tired of fighting it.
>
> Driller says they'll put in a new one for about $2500, 275' deep, PVC
> cased to 100' with 50' grout. Sounds like a good deal and the company
> is well known in the area.
>
That sounds like a good price to me: less than $10/foot. You must
live in a different area than I do. I paid about $25/foot for
a similar depth well.
> Questions:
>
> 1. I set the pump in the old well by myself. How much harder is it
> going to be to set a pump that much deeper? The pump, 70' of plastic
> pipe, and T handle was damn heavy, but manageable. When I've fed 250+
> feet of pipe down the new hole, am I going to be in big trouble trying
> to hold on?
I think that you want to use some sort of winch. You are now
adding both an extra 200' of plastic and an extra 200' of copper
(real heavy). While you could construct the apparatus to do it
yourself, there are plenty of pump & well guys with just the appropriate
truck for that. Ask your driller for recommendations or check the yellow pages.
>
> 2. Is 1" poly pipe and a normal pitless adapter suitable for the
> load? Will PVC casing hold the pitless adapter?
Don't know -- I have 1" sched 80 for a 300' deep pump.
>
> 3. The pump in the old well is almost new. Can I reuse it? No idea
> what size it is. What's the norm for a well that deep? The head will
> probably be about 75' away and 20' uphill from the house.
Yes, you can reuse the pump. Because of the extra 200' of wire,
you may need to go to a larger gauge wire. The pump controller (starter
cap and relay) should have some specs on it. Also if it is almost
new, I assume that you must have documentation. When figuring wire size
you have to consider the entire distance from the breaker to the well
head and down to the pump.
>
> 4. Is there a legal way to splice wire underground? The pipe and
> wire to the house are new and I'd like to reuse them as much as
> possible. It runs under a concrete patio.
Yes, but only with appropriate materials and methods.
Also do the wire size calculations as mentioned above.
>
>
> Thanks!
>
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