Noise through wall


New Member
I live on the dale and over the last couple of months i can here a noise through the wall in the back bedroom. it sounds as if someone has a motor running or a pump running all the time. it will stop for a few seconds then go again. its not very loud but at night time when the place is very silent its very frustrating. There are no neighbours either side of me at the moment so its not from direct neighbours.

Can anybody shed some light?