The aim of the paper is to show innovative approach in the field of conformity assessment through aspects of public utilities services. Main methods used for the research are analysis and comparison of methods used in the field of public utilities services. The article examines three water consumption recording and calculation methods: billing based on the calculation of the water consumed, billing based on water meter readings and payments using prepaid water meters. This report might be used as an informative material for the tenants and house managers; it reflects comprehensive methods and contributes to economic and innovative thinking and approach to public utility service management.