The choice of the remote reading system should be made together with the offer of water meters. In addition to metrological properties, an important issue is the way of communication between the mechanical register and the electronics of the communication module. This communication should be reliable: faithfully reproduce the water meter register even in flooded conditions. Another important issue is the reliability of remote (radio) reading and additional data provided by the system. These data can be used to validate the readings, resolve disputes, supervise the operation of some components of the installation and, above all, be used to effectively reduce water losses. Of course, the possibility of exchanging the read data with other systems in the Company, notably with the billing system, is not without significance.