Safety is their “first priority”.
It is likely to be Sunday at the earliest that people across Galway can switch their gas supplies back on.
Crews were working throughout last night to remove the odourless gas from the network.
They say testing is continuing at installations throughout the county to monitor odour levels as they return to normal.
“Our primary objective is to restore gas to all affected customers in the region as quickly as possible, while ensuring at all times that safety is our first priority.
The process of restoring all customers is likely to take most of the weekend, however supply will be restored on a phased basis, as odour levels return along the network,” Gas Networks Ireland said in a statement.
They are asking customers not to turn back on their supply until they are advised that it is safe to do so.
Turning off gas
Customers can watch the video below for the necessary steps to take to turn off and on their gas supply. Alternatively they can call 1850 200 694.
Its customers are being informed directly by text, through social media and their website. They are also being kept up to date by local print and broadcast media, including Galway Daily.
Hospitals and other improtant customers have been given priority following the safety concerns, to ensure the supplies are not affected.
Yesterday evening, it was reported that people living in Galway City, Tuam, Headford, Ballinrobe, Claremorris, Castlebar, Westport, Crossmolina and Ballina were affected.
The operator of the Corrib terminal has confirmed that a quantity of odourless gas has entered the network, affecting customers in both Galway and Mayo.