Rutherfordman
DIY Member
I live in western North Carolina. Most of our wells where I live are deep wells with submersible pumps supplying more than one property depending on the well yield. Most pumps are 3-5 HP. These wells were installed in 1997 and several in the past year or two have had holes develop in the 1-1/4" schedule 40 galvanized drop pipe. I examined some of the pipe that was replaced and it appears the problem is corrosion from the outside in at the exposed threads and just below them at the couplings. The couplings appear to also be galvanized steel. There are also a few corrosion spots along the length of the pipe but these are few. The wells range in depth from 250 to 800 feet deep. Is it normal for galvanized pipe to corrode this quickly in this application. The water is not "hard" in my area. Mine has not had the problem yet but I can see my days are numbered and when it needs replacing I would like to get the most bang for my buck. I am the only one currently using my particular well so I will have to bear the full cost. Thanks for any help anyone can give me.