Assess your situation Track down the impacted drain and extent of backup Verify if multiple drains are influenced (indicates major line problem) Look for noticeable h2o damage or overflow Standard Do it yourself Measures Pour boiling drinking water down drain Use plunger suitable for sink/rest room Attempt baking soda + https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/