: I need to install about 1500 feet of water pipe from a water company meter to my house. Because of the rugged terrain and steep slope most of the line will be installed on above ground. Is ther a type of PVC piping which is not suject to solar degradation? If grey pipe does not degrade from sunlight is it ok for potable water?most pvc pipe is uv stable,if pvc is not an option for the run perhaps you may be able to use PE as it has better resistance to direct sunlight and heat