Evaluate the Situation Identify the impacted drain and extent of backup Verify if multiple drains are influenced (indicates key line concern) Search for seen water problems or overflow Fundamental Do it yourself Actions Pour boiling drinking water down drain Use plunger suitable for sink/toilet Test baking soda + vinegar Remedy https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/