M4 sewer system adequacy — Dataset

Adequacy of the sewage system of Italian municipalities, identified as parameter M4 and provided in terms of: Frequency flooding/wintering from sewers (num/100km), Regulatory adequacy of flood unloaders (% not adequate) and Full dischargers control (% unchecked). The data is provided annually by the operators of the integrated water service and then validated by ARERA who transmits it to ISPRA for appropriate technical and environmental assessments.