Q. I have a question about my home plumbing. My home was built in 1975 and has PVC piping. Each time I use the bathroom sink or flush the toilet there is a loud snapping noise in the plumbing where ...

Some bathroom and kitchen sinks have “S” traps like this one that drain into the floor. It’s important that sewer gas doesn’t get trapped in them. Proper venting of drain lines ensures that a small ...