Otherwise, we will inevit the rupture of the pipes if you do not dig a ditch of the indicated minimum, since your pipes cannot withstand seasonal temperature differences. And these are additional costs and problems. If you have the central highway to be above the ground, then after you pick up the bare sections of the pipe from the ditch to the highway, you should carefully heat. In case of underground communications, the soil should be very carefully digging in the place where the central water supply passes, so as not to damage the pipe. In this place, in order to freely have access to wiring and you should put reinforced concrete rings. If you do not have such rings, you can replace them with car tires. Also do not worry if you will soon find water in your well, it can be rain, melt or groundwater.