It (used to be) that standard RESIDENTIAL lines & water meters were 1/2-inch; smallest pipe/ connection determines max flow
I have seen many commercial buildings, including w/ boiler rooms w/ 2-inch for potable, w/ separate lines & meters for lawn irrigation (that way, you do not pay sewer fees for irrigation, but much higher front end costs.) Fire sprinklers mains (commercial) normally 6" fed by 10-inch.
Neighbor years back was replacing supply w/ PVC from meter because he could not get proper pressures on new lawn irrigation system, I told him to do 3/4" or 1-inch, if only stronger, and would already be in place, if he later decided he needed a bigger meter connection. BUT it still connected to 1/2-in meter. I think he found a KINK in the old pipe he removed, and it (may?) have also been lead. Kink was what caused his problem, I believe.
Terry
thenne1713@aol.com
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