They're expected to continue into early 2022.
Works to strengthen Mullingar's water network are beginning today.
Irish Water crews are replacing over a kilometre of old, cast iron mains on the R390 in Ballinea, Mullingar with new, high-density plastic piping.
It's hoped the upgrades - which are expected to continue into early 2022 - will ensure a more reliable supply of water and reduce the number of bursts and outages.
The works will also involve laying new connections from the public water main in the road to customers' property boundaries and connecting it to the customers' water supply.
Where existing service connections on the public side are lead, these will also be replaced as part of this improvement work.
Irish Water is advising customers in the area that a temporary disruption to supply can be expected on Tuesday, between 9am and 4pm.
Some traffic management may be necessary, however, local and emergency access will be maintained.
Speaking about the project Matt Thomson, Leakage Reduction Programme Regional Lead with Irish Water says;
"These works are vital to ensure a more secure water supply to homes and businesses in Mullingar and are part of a significant investment by Irish Water to safeguard the water supply.
"We understand this type of work can be inconvenient and we will ensure our work crews make every effort to minimise any disruption these necessary works may cause.
"We would like to thank the community of Mullingar for their patience and cooperation while we continue to deliver these vital water network improvement works and safeguard the water supply now and into the future."
The Irish Water customer care helpline is open 24/7 on 1800 278 278 and customers can also direct any queries via Twitter to @IWCare.