Assess the Situation Identify the impacted drain and extent of backup Check out if a number of drains are affected (implies key line concern) Try to find obvious drinking water harm or overflow Essential Do-it-yourself Steps Pour boiling drinking water down drain Use plunger appropriate for sink/bathroom Try baking soda https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/