My laundry sink has a separate half inch pvc pipe under the tap that runs into the sewer line and the faucet sounds like it is constantly running. I am aware that there has to be some water that drains into the pipe to avoid sewer smell from coming up into the house. But the sound has gotten increasingly worse since we purchased the house in July. The tap is fully turned off but there is still a loud sound of running water. What could I do to fix this
Last edited: