Loud supply pipes when toilet is filling

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    • #280066
      John Bots

      I recently did some plumbing work and drained my water lines to complete the job. When I turned the water back on, I noticed the sound of the water running through the cold water pipes when I flush the main floor toilet is extra loud. Cold water use at any other fixture in the house does not create this loud, rushing water sound from the pipes. I replaced the tank fixtures and added an arrestor to the cold water supply thinking this would help. It didn’t. No knocking like water hammer; just loud rushing water though the pipes when the toilet tank is filling.

      Any ideas why this may be happening? Thanks!

    • #302232

      As per my knowledge, faulty toilet fill valve will cause resonance sounds like a foghorn. Hence, I would recommend to try closing the supply valves to all the toilets. If the noise disappears, open them one-by-one till the noise starts again.

    • #302233

      As Robert says. May be your water pressure is too high and that particular toilet does not have a flow restrictor in it?

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