I need to replace a corroded main service line to a house. I have a 3/4
Line now, blocked with corrosion, I want to upsize my line after the meter to my house in anticipation of an addition of a pool and another residence on the property.

I would like to make the new buried line 1 1/2 inch, with the new service extending 60 feet to current house. When I do the additional buildings I will put in a new tap to the city line for the additional water flow required .

If I put in the new larger line will my existing 3/4 tap provide normal pressure and flow through the new larger segment of service line ?

Inch and a half is overkill. I would increase the meter and all fittings to 1" and run a one inch service, Good luck. Tom

Hi Donyarbro

I don't think you are far off with your sizing, but you need to know EXACTLY how big you need the new water main to be. Here, there is going to be a local plumbing code that will require you to calculate the load requirements for the new water main. You'll need to include all present and all proposed future fixtures (including toilets, sinks, tubs or tub/showers, dishwashers, whirlpools, washing machines, boiler, outside faucets, hot water heaters, etc.) for both buildings and anything else like a pool, or an irrigation system, or any other future plans, etc.

Once you know the exact size water main needed you can install accordingly and you should be fine with the pipe size increase to 1.5" (or whatever size) from the 3/4" TEMPORARILY until you can increase the "tap size" into the city water main.

Mark