There are several potential causes of a wet carpet in a basement in Toronto. Some of the most common include: Leaky pipes: A leak in the plumbing system can cause water to seep into the basement and cause a wet carpet. Flooding: Heavy rain or snowfall can cause water to seep into the basement through cracks in the foundation or through window wells. High humidity: High humidity levels in the basement can lead to condensation on surfaces, which can cause a wet carpet. Clogged or malfunctioning sump pump: A sump pump is used to remove water that has accumulated in the basement. If it is clogged or not working properly, it can cause water to buildup and create a wet carpet. Improperly installed or maintained drainage: Improperly installed or maintained drainage systems can cause water to collect around the foundation and seep into the basement, creating a wet carpet. Improperly installed or maintained window wells. It is important to identify the cause of the wet carpet and take appropriate action to fix the problem. It’s better to seek professional help in order to find out the source and prevent any further damage.