Over 10,000 people in the Clonmel area have been told to boil their water before consumption because of concerns about the local supply.

The boil water notice was issued this evening by Irish Water and Tipperary County Council after consultation with the HSE, "to protect the health of consumers," Irish Water said.

The affected parts of Clonmel are those served by the Glenary public water supply and include parts of the town centre as well as areas around the Cashel Road, Cahir Road and Inner Relief Road.

"The boil water notice has been put in place due to issues with the filtration process at Glenary Water Treatment Plant," Irish Water said in a statement.

"Experts from Irish Water and Tipperary County Council are working to assess the situation and are investigating the issues at Glenary Water Treatment Plant with a view to implementing solutions to lift the notice as quickly and as safely as possible.

"In the meantime, all customers on this supply are advised to boil their water before use until further notice."

About 10,500 people are affected and anyone who is unsure about whether or not the notice applies to them should ring the 24-hour helpline on 1800 278 278.

Irish Water's Asset Operations Lead, Colin Cunningham, said they are working to rectify the situation.

"We advise customers in the affected areas to adhere to the boil water notice until further notice.

"We will continue to work closely with Tipperary County Council and the HSE to monitor the supply and lift the notice when it is safe to do so. We will issue a further update as soon as more information is available."

Water should be boiled for drinking, making water-based drinks, preparing salads and other foods which aren’t cooked before eating, brushing tooth, and making ice.