Help!Humming noise from water pipes!

[glebe]

Hello, I recently had a water meter installed outside the flat, after that I started having noises.

I live in a split level flat, only very recently, every time after I flush the toilet or use water on the first floor there's the humming noise coning from the pipe under the kitchen sink, but it's fine when I use water in the kitchen. It also makes the same noise when the boiler is on.

There is a faucet under kitchen sink which I believe connects to the main, there's a lever under bath tub on the first floor. I did turn the main faucet down but it didn't help.

I haven't done any DIY work and I'm not sure whether having the water meter installed can somehow cause this problem or it's just coincidence? Is there anyway to solve the problem? I have to go upstairs when the boiler is no because the noise gives me a bad headache. Please help

 

[Dan Robinson]

If it happens when the loo is flushed them it has nothing directly to do with the boiler.

It could be related to the water meter, but I am not sure that you can "blame" the installation.

Most likely it is an old stop cock, but it could be the taps or loose pipes. Without hearing it first hand it is hard to say. Start with the old stop cock though.