Need help with water supply pipe sizing over ~2,000ft

[aumfc]

My father-in-law's 2-story house is about 2,000 ft from the meter, with a rise of about 80 ft over the last 500 ft. They have good flow and pressure at their house. The pipe from the meter to the house is 1.5" PVC. The line was run about 20 years ago by the previous owner (non-plumber) with standard connections, and springs leaks along it once or twice a year. They would like to run a new line.

The water company says they have a 1-inch meter with 70 GPM and 150 PSI at the meter.

Online calculators I found say that running the same size line would reduce the pressure to less than 0, so I'm sure I'm doing something wrong.

We are thinking of replacing with 1.5" schedule 80 pipe for the entire length with bell ends. Any issues with that?

 

[Reach4]

Online calculators I found say that running the same size line would reduce the pressure to less than 0, so I'm sure I'm doing something wrong.

Do the calculation at 10 gpm , or at least not more than 20 gpm. Expect to use a PRV at the house. 80 ft of rise will lose less than 40 psi.

We are thinking of replacing with 1.5" schedule 80 pipe for the entire length with bell ends. Any issues with that?

When you use PVC, it is important to allow for thermal effects.

I would use 250 psi polyethylene pipe. SIDR uses hose clamps and barbs. CTS pipe is smaller ID and uses special connectors. With poly pipe, do not pull the pipe tight. Snake the pipe in the trench.

 

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[aumfc]

Do the calculation at 10 gpm , or at least not more than 20 gpm. Expect to use a PRV at the house. 80 ft of rise will lose less than 40 psi.

When you use PVC, it is important to allow for thermal effects.

I would use 250 psi polyethylene pipe. SIDR uses hose clamps and barbs. CTS pipe is smaller ID and uses special connectors. With poly pipe, do not pull the pipe tight. Snake the pipe in the trench.

So the 70 GPM isn't really what it is coming out of the meter?

I can't find anyone to do PE around here. Everyone I've talked to will only do PVC.

 

[Reach4]

So the 70 GPM isn't really what it is coming out of the meter?

The same gpm comes out of the meter that is used at the house. I am not sure what the 70 gpm means, but I think it is a number that I would ignore.

At the house you will seldom use more than 7 gpm, unless you are filling a swimming pool.