(64%), 226 municipalities 3.6 million (67%), 227 municipalities 3.2 million (59%), 187 municipalities 4.2 million, (78%), 311 municipalities Number of municipalities, residents and percentage compared to total residents in the province or in the reference area (as at 1 January 2020, source: Istat) in which Hera manages at least one energy service (distribution of gas, electricity or district heating), water service (aqueduct, sewage or wastewater treatment) and waste management service (separate or non-separate waste collection, or sweeping).