The notice is expected to remain in place for at least another few days.
Heavy rainfall in the Slieve Bloom Mountains is the cause of a boil water notice in the midlands, according to Uisce Éireann.
The notice has been in place for eight days, and is expected to remain valid for at least another few days.
Residents in the Tullamore South area, with the exception of Colliers Brook Estate and Spollanstown Industrial Estate, are affected, as well as those in Clonaslee.
Customers are being advised to boil and cool their water before use.
John Gavin from Uisce Éireann explains what happened:
Enterprise Department Confirms Over 80 Westmeath Jobs At Risk
Offaly Teacher Pays Tribute To Colleagues After Winning STEM Award
Asthma Society of Ireland Hold Workshop In Laois This Weekend
Laois TD Calls For Shorter Ambulance Deployment Distance
Uisce Eireann Publish Shannon Pipeline Consultation Submissions Report
70% Of Farming Families Lack Succession Plan
Mental Health Charity Triple Counselling Sessions After Citywest Protests
Westmeath Library To Close For Three Months From Today
Drug Usage On The Rise In The Midlands
Shannon Callows Farmers Demand Inclusion In Flood Management Group
Offaly Teachers Win National STEM Award
Appeal Lodged Against 600 Acre Laois Solar Farm Project
Government Funding To Benefit Midlands Historical Structures
Former GAA Referee Pleads Guilty To Indecent Assault
Laois TD Warns EU Plans Threaten Irish Neutrality
Almost One Million Cigarettes Seized In Offaly
Management Can Easily End Industrial Action - SIPTU
Westmeath Credit Union Manager Wins Lifetime Achievement Award
Midlands Readers Encouraged To Take Part in MS Readathon