I have humming noise (seems to be getting louder) when I flush the toilet and when I run water into the bath and into the kitchen sink. I read a reply to a similar problem about looking at the regulator.. What is a regulator?
Many thanks!

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Originally Posted by Leighton

I have humming noise (seems to be getting louder) when I flush the toilet and when I run water into the bath and into the kitchen sink. I read a reply to a similar problem about looking at the regulator..? What is a regulator?
Many thanks!

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Are you referring to a pressure regulator that installs on a water service line and controls the pressure that enters the house? A pressure regulator is located just inside the house on the house supply. Regards, Tom