REGULATION OF THE SECTOR AUTHORITY Since the Environment (ARERA) has defined the regulation of the contractual quality of the integrated water service (RQSII), thus establishing specific and general levels of contractual quality that are homogeneous throughout the territory In December 2019 with resolution 547/2019, ARERA updated – from 1 January 2020 – the current regulations by broadening the scope 30 ACEA GROUP / SUSTAINABILITY REPORT 2019 of the regulation and integrating what is already envisaged in terms of billing, check of meters, execution time of complex works, methods of recording, procedures and parties obliged to report.