Dear James: I often hear a loud knocking sound when we close a faucet quickly or the clothes washer shuts off. What is causing this sound? Is it dangerous and how can I fix it? —David R. Dear David: ...

Dear James: I often hear a loud knocking sound when we close a faucet quickly or the clothes washer shuts off. What is causing this sound, is it dangerous and how can I fix it? — David R. Dear David: ...

Dear James: The water pipes are loud in our house, especially at night; they make a knocking sound when we shut off a faucet. What causes this loud noise and how can we stop it?—Deborah G. Dear ...

Dear James: I often hear a loud knocking sound when we close a faucet quickly or the clothes washer shuts off. What is causing this sound, is it dangerous and how can I fix it? Dear David: The loud ...