Every service pipe must be laid in such manner as to prevent rupture by settlement and not less than 7 feet below the surface to prevent rupture and stoppage by freezing. Frozen service pipes between the curb stop and the building shall be the responsibility of the owner. Service pipes must extend from the curb stops to the inside of the building or if not taken into a building then to the hydrant or other fixtures which they are intended to supply. A valve, the same size as the service pipe, shall be placed close to the inside wall of the building, ahead of the meter and well protected from freezing. Joints on copper tubing shall be flared or compression-fitted and kept to a minimum. No more than 1 joint shall be permitted for each 70 feet of service line. All joints shall be left uncovered until inspected. Minimum size connection with the water mains shall be 3/4 inch in diameter.
(1998 Code, § 3.20, Subd. 4)