Kinda electrical. Kinda plumbing.
I recently replaced my 1/2 HP well pump with a 1 HP well pump. Why? Because it's what was readily available at the time...
Now, when the pump kicks on, I get a loud bang . I'm thinking I can either 1.) install some type of "start-up pressure absorber" device on the water line, or 2.) install some type of electrical rheostat that eases the amperage into the pump. (# 3 - "put the right pump in" ain't happening. It's 10 degrees outside.)