This problem is eliminated by the optional "toilet water guard", which, if installed in the public toilet, can indicate to the operator via the WC-Guide system that the water is not flowing in an admissible manner. This prevents damage to the toilet and, of course, water and sewer fees, which are unnecessary and in many cases not negligible extra costs.
From the point of view of communication, the "WC-water guard" matches the existing communication system in the public toilet, i.e. it reaches the WC-Guide system via mobile internet, Ethernet and LoRaWAN interface, which already provides information via SMS, email and online. and sends the error message to the appropriate place / places.