Cistern to boost county water pressure up hill

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Rtbrannon

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I am running a line to a house that is 200’ higher in elevation than the water meter. I have 70-75 psi at the meter. I’m thinking of running a 1” pex line from the meter approximately 1500’ in length and approximately 150’ up to a 500 or 1000 gallon cistern using a float valve to fill the tank. Then installing a pump at the cistern to pump the water about 200’ in length and 70’ in elevation to the house where there’ll be a tank and pressure switch. I’m wondering what type of pump set up would be best for this application and if 1” pex would be feasible?
 

Valveman

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70 PSI at the meter will lift water 150' and still have 6 PSI for a float valve to work. It will work, but if the city starts delivering any less than 70 PSI, the cistern will not fill. You can install the booster anywhere along the line where you can get power. The higher up the hill you install the booster, the more of the city pressure you are taking advantage of, and the smaller the booster can be. But you could put a booster at the meter with or without a cistern and set the pressure to 130/150 to give you 40 to 60 up at the house.

But the way you are planning it will work fine and only needs a booster pressure setting of 70/90 with a constant pressure of 80 would give you strong constant 50 PSI up at the house. You can use a submersible pump in the cistern or a multi=stage booster pump connected to a pipe from the cistern.

Multistage Booster and PK1A.jpg

Cistern Storage Tank with Submersible Booster Pump.jpg
 

Reach4

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SIDR polyethylene is usually a better buy for the long haul. SIDR is bigger ID than the same nominal size, than is PEX.

While the nearest Menards is about 3 hours from you, https://www.menards.com/main/search.html?search=sidr can give an idea of what is available. They don't ship pipe to states where they don't have stores. But other stores can help you. I think Home Depot calls SIDR IPS, but I am not totally sure. SIDR is a constant ID for a given nominal size, to fit the barbs.

Pressure drop in a pipe is the sum of friction loss and head. http://irrigation.wsu.edu/Content/Calculators/General/Pipeline-Pressure-Loss.php tells you friction loss.
 
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