Assess your situation Locate the impacted drain and extent of backup Look at if multiple drains are afflicted (implies key line issue) Search for visible drinking water hurt or overflow Simple DIY Ways Pour boiling h2o down drain Use plunger appropriate for sink/toilet Try baking soda + vinegar solution Remove https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/