If there is a musty smell in the bathroom and the water in the sink drains slowly, this may indeed indicate a blockage in the sewage system or partial contamination of the pipes further down the network. Attempts to clean with chemicals and a plunger often do not work, and disassembly on your own can lead to bigger problems and additional costs. In such cases, it is worth contacting professionals who have the equipment for accurate diagnosis plumber mississauga can perform a video inspection of the pipes, accurately determine the location of the blockage or damage, and fix the problem without digging. This allows you to quickly and safely restore normal water flow, avoid serious accidents, and provide advice on prevention so that similar problems do not recur in the future.