You will want at least 1" pipe from the water meter.
Here is a nice chart and explantion
Water Sizing Table
I'd greatly appreciate some input regarding water distribution pipe sizing. I'm installing water pipes from my meter in the basement to the 2.5 baths plus a laundry room & kitchen sink. I've been vacilating between using a 3/4" and 1" distribution pipe. Here are the stats: The distance from the street to the meter in the basement is 54'. The pipe from the street is 5/8" in diameter. From the meter to the hot water heater near the rear of the basement where the chimney is located is 34'. And the distance from the street to the furthest faucet in the system comes in at 125 feet. In the attached plans 1 block = 1 foot.
Last edited by Terry; 07-02-2009 at 06:32 PM.
WE would use 1" to the house, in case you decide to install an irrigation system, then 3/4" for everything else, with 1/2" at the ends. But what kine of pipe are you using, because that could change our recommendations. Didn't the approving body specify the sizes when you obtained your permit?
5/8" pipe from the meter to the house? You've got to be kidding. If not, then no matter what size pipe you use in the house the end result is going to be completely unsatisfactory. In fact, here, they would not issue the permit until you added a properly sized service pipe to the drawing.
At my mothers place, it's still a 5/8 meter.
The original water service was a 3/4" copper line 250 feet long.
I was not able to run an irrigation system behind the house that way.
Without changing the meter, I ran a 1-1/2" instead, and now I can run four zones on 1 acre.
Increasing pipe size does reduce friction loss.