“North-West” (Kotayq, Shirak and Aragatshotn marzes)
“North-East” (Gegharquniq, Lori and Tavush marzes)
“Center-West” (Ararat and Armavir marzes)
“South” (Syuniq and Vayoc Dzor marzes)

“South” (Syuniq and Vayoc Dzor marzes)

The center of “South” Regional branch is located in Sisian town. Potable water supply and wastewater services are provided to about 34000 customers. The servicing perimeter of the branch includes 8 urban and 20 rural settlements. The branch has 4 sectors and 3 sub sectors: