Drainage and cleaning service of sewage networks and purification and lifting systems pertaining to the Integrated Water Service - Northern Zone (Ref. APP_59-2/2022)
Drainage and cleaning service of sewage networks and purification and lifting systems pertaining to the Integrated Water Service - Southern Area (Ref. APP_59-3/2022)
Drainage and cleaning service of sewage networks and purification and lifting systems pertaining to the Integrated Water Service - Eastern Zone (Ref. APP_59-5/2022)