According to embodiments of the prevention, a method for installing a water leakage detection system is provided. In one embodiment, a method is provided to identify at least one observation point for each electricity conduit hidden inside in a wall and at least a ceiling of an area. A humidity sensor and a tag reporting data via radio frequency are further provided such that at any given time, moisture of the area associated with the observation point is collected and reported to a circuit breaker that can be configured to terminate the power supply associated with any given observation point.