Well Pump Question

tyler94 · Mar 15, 2014

Hey guys, I need a well pump and a way to power it in a 600 ft-deep well that is located 150 feet away from the house to supply water for six people. The pump should be capable of creating a pressure of at least 80 PSI on the upper level of the house. I am the amateur of all amateur's when it comes to this kind of stuff so all help and input is greatly appreciated.

Thank you,
Tyler

LLigetfa · Mar 15, 2014

What is the the static water level? What is the GPM the well can produce and what level does it draw down to?

Sponsor · 2022-01-29T12:20:58-0800

tyler94 · Mar 15, 2014

LLigetfa said:
What is the the static water level? What is the GPM the well can produce and what level does it draw down to?

This is for a school project so nothing is really specified except for the information I have given. The project is to heat and power a house and give water that is completely off the grid. And we are given this predug well and we have to get it to the house.

NHmaster3015 · Mar 16, 2014

tyler94 said:
This is for a school project so nothing is really specified except for the information I have given. The project is to heat and power a house and give water that is completely off the grid. And we are given this predug well and we have to get it to the house.

Don't know the static or recovery? Toss. 1/2hp. 7 gpm down there. Be fine.

Reach4 · Mar 16, 2014

Search for "pump curves". Learn to convert 80 PSI to "head" to add to the other factors. nhmaster3015
was joking. Search for "solar powered pump"

NHmaster3015 · Mar 16, 2014

No I wasn't.

tyler94 · Mar 25, 2014

Okay, so I have converted PSI to feet of head and I got about 184.5. So where do I go from here? How do I know which well pump will give me this?
Thanks.

Valveman · Mar 25, 2014

184' is the same as the 80 PSI that you need. But you have to add the depth to the pumping level of the well. If you don't have a well test and know the pumping level, you will need to add 600' to the 184', because your well is 600' deep. If that is the case you need a pump that will produce 784' of head. I would say you need about 10 GPM for a house with 6 people, so you need a pump that can do 10 GPM from 784'. A 3 horsepower, 10 GPM pump will deliver about 8 GPM from that depth and pressure. A 7 GPM, 2HP will give you about 6 GPM from that depth.

tyler94 · Mar 27, 2014

valveman said:
184' is the same as the 80 PSI that you need. But you have to add the depth to the pumping level of the well. If you don't have a well test and know the pumping level, you will need to add 600' to the 184', because your well is 600' deep. If that is the case you need a pump that will produce 784' of head. I would say you need about 10 GPM for a house with 6 people, so you need a pump that can do 10 GPM from 784'. A 3 horsepower, 10 GPM pump will deliver about 8 GPM from that depth and pressure. A 7 GPM, 2HP will give you about 6 GPM from that depth.

The well is also located 150 ft away from the house, does that needed to be accounted for also? so would I need a pump that will produce 934' of head?

Valveman · Mar 27, 2014

Horizontal distance only adds friction loss depending on the size of the pipe. Unless it is really small pipe you shouldn't need to add more than 10' or 20' to the total head. So that would make your TDH or total dynamic head about 800'.

If you knew the actual pumping level you might be able to set the pump much more shallow and use a smaller pump. Sometimes the pump may only be set at 200' or so in a 600' deep well.

Well Pump Question

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