To have us reassure you that those thumping noises you hear in the walls don’t mean you live in a haunted house, they just mean you have water hammer, might not actually feel assuring. Water hammer sounds sinister. Possibly dangerous. What is it?
First, it’s not dangerous—at least, not to you or your family. It can be a problem for the plumbing, however, and if it happens frequently, it’s an issue you’ll need a professional plumber in Potomac, MD to fix.