Filtering water from deep well (700 feet)

[Midniteoyl]

My last home was in a village where they had to flush the mains for 12 hrs min. every month due to organics. Nastiest, rustiest water I have ever had..

 

[farmer2009]

Good questions, Jim. It's a 3HP Franklin Legend submersible that does 15gpm. We have 1.25" schedule 80 PVC for the well line, and that's what I ran down to the house as well. Reducing it to 1" just before hooking onto the house. I put a couple of valves in the water line along the way for future irrigation, etc. Our pressure tank is an 80-gallon Flexlite.

Judging from the few short times I've run the pump, I think it's doing more than 15gpm. I'll have to measure it whenever we get moved.

Got the water line to the house trenched and run 165' yesterday. The plumber is connecting it all and doing a valve / connection test today.

Wow sounds low on flow around here we get 40 gpm out of 2 hp pumps with 2" lines. The guys running 3 hp pumps also have a 3" line. Don't know their flow. We are using deep well pumps floated about 5' deep in lakes to water livestock. Some have over 1000' to control boxes. With 2 120 gallon pressure tanks (35 gallons of draw down on each). With chlorinator (gas or liquid). Some have kill tanks just big resin tanks to let water set in then filtered through large filters with meada tailored to water test. I have 2-21"x54" filters that regenerate every night. Pumps last us about 5-8 years.

 

[turnkey4099]

Number one TRUST NO ONE. Even if you get the well tested today and it perfect tomorrow something can drop into the well to contaminate it - no matter how well it's sealed.

Anyone that thinks ANY well water is safe is delusional. No well is 100% protected in a "clean room" environment. I don't worry about the water COMING UP - I worry about what has fallen DOWN the well to contaminate it. Anyone ever heard of the Hantavirus, just to mention one. And all of use have mice and rats in and around our wells.
Pay close attention to the EATING OR DRINKING part of this:
Hantavirus Pulmonary Syndrome - catch, body, viral, contagious, causes

For a few hundred bucks to get a great filter why wouldn't anyone do it.

That is over-the-top paranoid!! Great way to promote business for the people selling filters tho

Harry K

Harry K

 

[econometrics]

Wow sounds low on flow around here we get 40 gpm out of 2 hp pumps with 2" lines. The guys running 3 hp pumps also have a 3" line. Don't know their flow. We are using deep well pumps floated about 5' deep in lakes to water livestock. Some have over 1000' to control boxes. With 2 120 gallon pressure tanks (35 gallons of draw down on each). With chlorinator (gas or liquid). Some have kill tanks just big resin tanks to let water set in then filtered through large filters with meada tailored to water test. I have 2-21"x54" filters that regenerate every night. Pumps last us about 5-8 years.

Well, keep in mind that this thing is pumping water vertically 580 feet. It takes a lot of power just to get the water to the surface.

I have a 250' well further away that has a 2hp pump (1hp smaller than my deep well) that does 25gpm.

From what I read, most homes on city water have average around 8gpm flow. So I think we'll be a-okay.

 

[econometrics]

That is over-the-top paranoid!! Great way to promote business for the people selling filters tho Harry K Harry K

Haha, I think his concern is valid but yeah... Very low probability.

 

[Midniteoyl]

Well, keep in mind that this thing is pumping water vertically 580 feet. It takes a lot of power just to get the water to the surface.

I have a 250' well further away that has a 2hp pump (1hp smaller than my deep well) that does 25gpm.

From what I read, most homes on city water have average around 8gpm flow. So I think we'll be a-okay.

Ya.. 8-12gpm is the norm..

 

[dacoonz]

We're getting ready to drill a well just south of Seguin Tx. We've talked to a couple of drillers and have gotten one estimate. This is the first well we've drilled. Any suggestions on how to select a driller? How much should we expect it to cost? The estimate runs $7700 to $8200 depending on the size of the pump motor. We're also building an outbuilding and plan to have the well next to the building and the storage tank, filters etc inside. Our neighbor has a filter (don't know what kind) and has to change it every 2-3 weeks. Any kindly advice to the totally ignorant is welcome.

 

[turnkey4099]

Well, keep in mind that this thing is pumping water vertically 580 feet. It takes a lot of power just to get the water to the surface.

I have a 250' well further away that has a 2hp pump (1hp smaller than my deep well) that does 25gpm.

From what I read, most homes on city water have average around 8gpm flow. So I think we'll be a-okay.

It isn't how deep the well is or even how far the pump is down that determines the lift. The lift is from the static level of the well with a fudge factor for drawdown while it is pumping. My well is 65', pump at 50', static level 10' so my lift is only 10' (23gpm so no need to fudge the drawdown).

Harry K

 

[econometrics]

It isn't how deep the well is or even how far the pump is down that determines the lift. The lift is from the static level of the well with a fudge factor for drawdown while it is pumping. My well is 65', pump at 50', static level 10' so my lift is only 10' (23gpm so no need to fudge the drawdown).

Harry K

I see, thank you. But the idea is basically the same... the longer the lift, the higher the HP needed? My lift on the 700' well is 120 feet. My lift on the shallow well is 20 feet. I guess that's why I need a 3hp on the 700' well, and a 2hp will do on the 250 footer.

 

[econometrics]

We're getting ready to drill a well just south of Seguin Tx. We've talked to a couple of drillers and have gotten one estimate. This is the first well we've drilled. Any suggestions on how to select a driller? How much should we expect it to cost? The estimate runs $7700 to $8200 depending on the size of the pump motor. We're also building an outbuilding and plan to have the well next to the building and the storage tank, filters etc inside. Our neighbor has a filter (don't know what kind) and has to change it every 2-3 weeks. Any kindly advice to the totally ignorant is welcome.

Wells can be a scary thing to wade into. I know firsthand because I just had to do it! :laughing:

I would call 3-4 drillers in your area that you can get some references on. Ask around with realtors, or nurseries, or farmers - most all of them know well drillers and have worked with at least one in the area.

I called 4 different drillers and basically just went with the lowest price. However, my driller had drilled numerous wells for my grandfather, so I knew I could trust him.

The high side drillers were telling me $20-$25 per foot (depending on how deep you drill. The deeper, the cheaper they charge per foot as their higher fixed costs are marginalized as you go further down (pumps, pressure tanks, etc. - stuff ALL wells have to have)). I think my well was drilled for about $17 per foot.

Let me know if you have any other questions!