One of the items on our checklist is to make sure the jumper cable over the water meter is present and secured to the water pipes.

In this photo you can see the water meter is removed.

This is the purpose of this cable. When it comes time for the water to be installed, the electrical voltage on both side will be the same. If there is a difference in potential, the person who touches both side of these pipes will become the conductor to equal the voltage. This can actually kill someone. And for a $2.00 wire and a couple of clamps secured to pipes, I believe it should be present.