1/2" flexible copper tubing is used to attach the house water service to the new water main. It can be snaked down into the hole without digging a long, deep trench. While we don't have any sidewalks, in neighborhoods where they do they, they dig a hole in the street, and one by the water valve in the lawn, tunneling under the curbs and sidewalks. The same technique is used here, even without curbs and sidewalks. That's why there is only a small hole dug in the street and one on each lawn.