The reservoir has enough water to maintain a water supply
People in Drogheda and East Meath are being asked to conserve water after a burst on the pipeline serving the Staleen Water Treatment Plant.
Irish Water say a repair crew has been on site since Wednesday evening.
The burst is close to the same location as a major burst which occurred last year.
The treated drinking water reservoir has enough water to maintain a water supply to customers for now.
In an update this afternoon, Irish Water says repair works have been completed, but they won't be able to confirm if it has been successful until the main recharges over the next few hours.
The utility explained: "The treated drinking water reservoir serving Drogheda and most of East Meath has enough water to maintain a water supply to customers for the present. A water supply is being maintained to Our Lady of Lourdes Hospital and we are also prioritising schools, nursing homes, crèches and vulnerable customers."
Bottled water is also being distributed to vulnerable customers in Louth and Meath.
The statement adds: "A water outage is impacting some customers in Ratoath, Kilbride and Duleek. Alternative water supplies have been mobilised and water tankers are located in Ratoath and Kilbride and water tankers will be in place in Duleek shortly."
Irish Water has approved the budget and design for a new pipeline to replace the existing lines.
It says it is in the final stages of resolving "all of the contractual issues" to begin construction of this pipeline within weeks.