Hi! I need advice. My pipes will intermittantly buzz and vibrate when the water is turned on. We called the water company, who replaced the meter. It stopped for a week, and has just started again, only now the pitch is different. It mainly happens when there is a low flow of water, like after flushing a toilet. Could it be the water pressure regulator? Or something else? Is this something serious or just annoying? The house is 50 years old. Pat
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