How should this home be properly grounded? The home was built in the late 1990's. There is a ground clamp on the main water pipe after the meter. Before the meter there is a few inches of copper then the main shut off valve. Out of the valve is a barbed fitting because the water line in to the house is all plastic. I believe it is well water tubing. The Plastic tubing comes out of the foundation a few inches. The way I see it, the water main ground does absolutely nothing since it is 100 percent plastic. Have not opened the panel yet to see if there is a ground rod yet. Can someone please advise the proper way to ground this home.