Evaluate the specific situation Locate the affected drain and extent of backup Verify if multiple drains are influenced (implies major line issue) Hunt for visible water problems or overflow Fundamental Do-it-yourself Ways Pour boiling water down drain Use plunger appropriate for sink/toilet Consider baking soda + vinegar solution Take away https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/