Two holes, 3/4" and 1" within 10' of piping. The water is treated. There is no brace or any other metal near where the holes were. What could cause these holes to form? Any ideas?
Had a 18" cooling water piping repaired; two holes within 10 feet. Is there any regulation/code/standard on how many repairs can be done for ___ feet of piping for underground piping?