I am wondering how well PVC holds up over time in the weather. My experience has been that PVC pipe tends to get brittle after a year or more in the sun and fluctuations in temperatures over the seasons. Of course, this has been with smaller sizes (3/4" mostly) used in gardening projects. Do the larger sizes, being thicker, hold up well over time? I wonder if the electrical conduit, which seems to be used exposed more often than traditional water/pvc pipes, would fare better. I see PVC fencing sold regularly, so I must assume someone has a way to make it tolerant to the UV in climates like ours in North Texas. When I read "PVC", are we talking about something other than the traditional water bearing pipe? I love the idea, as PVC is so easy to work with, but I am concerned about the investment holding up with time.