: When water runs down the sink drain in the bathroom, the tub drain makes a gurgeling sound. And in general all our drains our very noisy. Is this a venting issue and if so how should I remedy the problem?I would agree with the other follow ups, it is most likely a clog somewhere in the line. A plumber is probably your best bet, I would shy away from any crystal Drano or other crystal drain cleaners, if their is a clog and it is too much for it to eat through, the clog can get worse and you can actually cause a problem for the plumber who comes to do the work!
