Faucet & Sink
Kitchen Sink Gurgles When the Washing Machine Drains: What It Means
A kitchen sink gurgle during washer discharge can point to shared drain, vent, standpipe, or branch restrictions; document symptoms before DIY fixes.
What to know about Kitchen Sink Gurgles When the Washing Machine Drains: What It Means
A kitchen sink that gurgles when the washing machine drains may indicate a shared drain/vent restriction, standpipe issue, branch-drain capacity problem, or partial blockage. It is not usually a faucet or sink-basket problem.
Washer-drain gurgle table
| What happens | Possible meaning | Safe decision |
|---|---|---|
| Sink gurgles only during washer drain | Shared branch/vent behavior. | Document washer cycle and sink water level. |
| Sink backs up with dirty water | Branch drain backup risk. | Stop washer use and call plumber. |
| Other drains gurgle too | Main/vent issue possible. | Avoid chemical cleaners. |
| Occurs after remodel/appliance change | Drain routing or standpipe issue. | Gather photos and manuals for plumber. |
What not to do
Do not pour drain cleaner into multiple connected drains or keep running the washer if water backs up into the sink.
Fixture, drain, and finish boundary
Sources used
For the source record used for this guide, see the PlumbAdvisor source library.