Periodically, we get humming noise in our plumbing system at home. It is irregular in nature. Once we flush the toilet bowl, it disappears for a while and reappears again. Can you suggest what could be wrong, and how we can remedy the situation. Thanks, Vigi Gurushanta.
: Periodically, we get humming noise in our plumbing system at home. It is irregular in nature. Once we flush the toilet bowl, it disappears for a while and reappears again. Can you suggest what could be wrong, and how we can remedy the situation. Thanks, : Vigi Gurushanta.