The submersible, intermittent pump for my household water well, which is undergound out in the yard, “bangs” when it starts and stops, and vibrates the pipes when it runs. Any idea what might be causing this, or how to make it stop doing this? This all started about 5 months ago and has been getting worse.
It sounds to me like water hammer. There are a few ways to address it, probably the easiest is to add an expansion tank. To find out, try connecting a garden hose somewhere in the system, preferably a cold water pipe. Drain all the water from the hose and put a nozzle or plug on the end so the air can't escape, then turn the valve on. The air in the hose will act as a cushion and, if water hammer is the problem, you won't hear it while the hose is connected. That is not a permanent solution, just a simple test that might give you an answer. Good luck
