Smart Debris Monitoring System consists of both an IoT device and a dashboard. It is a solution that detects sediment or debris build-up that may block the water pipeline, which may cause flooding and contamination. It is designed and built to be waterproof and protected from heat deformation. The device's bracket is attached to the maintenance hole cover. The sensor reads the water height in the pipeline to check if there are any sediments in the water. The device uses Bluetooth Mesh Network to collect and send data from the sensors to the server.