Another water line question

[Limecuda]

We will be building a house over the next few months. I will be having to run 900' of waterline. The main utility line is a new 8"-10" and about 1/4 mile from one of the water towers. A residential meter is 3/4". Obviously getting to the end of a 900' line could lose a lot of pressure and volume. I'm thinking a 1.25" line collared down to the 3/4" at the meter should keep the pressure and volume at a decent rate. Would I be wrong in that assumption?

[cmuncy]

You should be fine, but I bet that your meter is only 5/8".
I have 1400' of 1.5" running from my meter to my house and I have plenty of flow and pressure.

[wushaw]

I used 1/1/4" sch 40 350' and I get plenty of flow and pressure and the main line is only 2".

[sunspot]

I have a measured 3/4" meter at or near the main that is coupled to a 1" line running 300' to the house. Once inside the house it goes back to 3/4". I have 65 PSI at the house but I wish I had more volume.

[pemad]

I think my meter box at the road is 5/8 but not 100% sure. I ran 1 1/2" pvc pipe to my house roughly 500'. Water pressure gauage runs around 70 to 80 psi.

[EddieWalker]

Originally Posted by Limecuda

We will be building a house over the next few months. I will be having to run 900' of waterline.

The biggest factor in determing preasure is going to be elevation change. If the pipe goes uphill, you will lose preasure. If it goes downhill, you will gain preasure. Sometimes allot of preasure!!!!!

900ft is a long ways. I've read where you can put in a larger pipe to improve the volume, but for the jobs that I've done, I always stay with the same size water line as the tap. My farthest run was 1,200 feet and it went down a hill. I had 120 pounds at the house!!!! It was a problem that I solved with a preasure reducer.

One thing to be worried about when running a larger pipe then your tap is that you will never use the water in the pipe. It becomes a sort of storage tank that will get stagnant over time.

My water main into my place is 6 inches. I have a 1 1 /2 tap into my house, but only have two bathrooms. Twice a year, we have to flush the lines out to get rid of the wate when it starts to taste bad. In time, I'll use the water capacity that I have available, but until then, it's another thing that I get to do.

Eddie

[Western]

Eddie,
Once you get that fire Hydrant in it will be alot more fun!

[saltman]

I ran about 700 feet of 2' from my water tank that sits about 100 feet high. You get a little less than .5lb per foot of drop minus any uphill runs no matter what size you use. For me it was more about volume and that's why I went with the 2' inch so I could irrigate and never have to worry about taking or shower or flushing the toilet when the sprinklers were on.

[ray66v]

Not all water mains are the same. You need to consider the pressure and volume your starting out with at the street. You should "up size" the pipe if either are already low too start with.

That way is the pressure is low, you will at least have volume, and if the volume is low, you will at least have pressure. Having neither, really sucks!

[Limecuda]

Pressure from the main lines near the road is good. The water supply recently put in fire hydrants every mile or so.