If you live in Toronto, you have most likely heard horror tales of basement flooding—particularly in relation to large storms when sewers back up. The damage can be catastrophic, damaging flooring, walls, furniture, and even posing health risks from polluted water. So to be safe we must install the backwater valve device. https://canadawaterproofers.com/waterproofers-blog/how-much-does-basement-waterproofing-cost/