These are usually in the area with in-ground sprinklers. Not all stores carry in-ground sprinkler goods. You also can check to see if there is a sprinkler supply company nearby. You will lant a adaptor to connect 3/4" garden hose thread male or female.Nice! I've been thinking about doing this very same thing, but haven't been able to find the right thread pvc that would attach to a garden hoses' thread.......at least, at the local HD and Lowes by me.