What Causes Sink To Back Up - Water often backs up and. Water backing up indicates the main sink drainpipe is blocked, with no way for wastewater from both sinks to flow out. A clog in the kitchen sink drainage system is the most common cause of water backing up. As a result, the sink. If no physical blockage is present, what would be causing the sink to backup?
A clog in the kitchen sink drainage system is the most common cause of water backing up. If no physical blockage is present, what would be causing the sink to backup? Water often backs up and. As a result, the sink. Water backing up indicates the main sink drainpipe is blocked, with no way for wastewater from both sinks to flow out.