I use to have a submersible pump. I am not sure of the full deapth but the pump was connected to 20' of steel pipe. I would have to replace the steel pipe about every year to two years. It would rust out holes in the pipe. I changed over to a flotec 1hp jet pump with pvc pipe going into the well. When I first got the property I had enough pressure to run 5 rain bird sprinklers and still have enough water to take a shower. Now I can only run one garden hose and cannot run any water in the house. I am thinking on changing pumps, but not sure what to get as far submersible or centrifugal. Also was thinking on going to a 30 to 50 gpm. Am I on the right track or should I do something different.