Water pressure causes noise problems. Water hammer is due to water pressure against faucets, valves or sidewalls of pipes. Solve it with larger piping.
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Low water pressure problems can be checked easily. Water shut off valves need to be checked indoors and out. Your local water works people can do a bypass check.
Cast iron drain pipes are superb. They are quiet. Plumbing does not have to be noisy like plastic pipe systems.
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