Affile (aqueduct, sewerage and waste water treatment)
Agosta (waste water treatment)
Albano Laziale (aqueduct, sewerage and waste water treatment)
Allumiere (aqueduct, sewerage and waste water treatment)
Anguillara Sabazia (waste water treatment)
Anticoli Corrado (waste water treatment)
Arcinazzo Romano (aqueduct, sewerage and waste water treatment)
Ariccia (aqueduct, sewerage and waste water treatment)
Arsoli (waste water treatment)
Artena (aqueduct, sewerage and waste water treatment)