www.aalertdrain.ca br A Alert Drain Limited is Located at 467 Edgeley Blvd., Unit 5 Concord, Ontario L4K 4E9 br br Since 1927, the expert service of A Alert Drain Limited has kept drains in Toronto and the GTA flowing smoothly. Whether a clogged drain needs a snake or waterproofing is in order, we can do it all. Trust our experienced plumbers to give you the courteous and professional service you expect from a family owned and operated business.