Hi @vsadreddin, sorry for the slow reply.
Sounds like the issue is rooted somewhere else in your house. Are there any other utilities in the same area?
Have you seen an increase in your water bill?
Do you happen to have a sump pump?
I’m curious if you’d be able to record and share the sound by chance?
I hope we can find the source. I can only imagine how annoying it is.
Best, Emil