Supplied through the Kilmallock scheme, it serves 2,500 customers in the south of the county.
The certification, awarded by the National Standards Authority of Ireland (NSAI)— the international organisation for standardisation (ISO) in this country— was presented by the Environment Minister Phil Hogan.
Maurice Buckley, chief executive of NSAI, said: “Though our work is often invisible, standards are part of your life every day. We all depend on standards for everything to run smoothly, but most of the time we don’t even notice. You expect that the water you drink is of high quality — this is one of the most essential services that can be provided.
“As the first organisation in Ireland to achieve ISO 24512, Limerick County Council has shown its commitment to delivering quality drinking water supplies to the local community and I congratulate them for their dedication.”
Conn Murray, manager Limerick City and County Councils, said the provision of water services was set to undergo significant change during the coming years. He said both councils would play a central role in the transition.
The current water treatment plant at Ballingaddy was opened in 1987. The water drawn from the river Loobagh undergoes a full treatment process at one location before being pumped to the reservoir. The plant supplies approximately 250,000 gallons per day to the town. All the processes within the plant are monitored on electronic systems.
Four out of each five houses in Co Limerick receive piped water from a council source.
Over the past 20 years the number of houses on mains water has risen 3% per annum. The council also provides support to the private group water scheme sector through the provision of grants and subsidies, along with technical advice.