Irish Water is reminding customers that the boil water notice, issued on Monday for the Lough Talt Public Water supply scheme, remains in place until further notice, following the detection of cryptosporidium in the treated water.
Irish Water has now confirmed that Charlestown has been removed from the boil alert, while the Moylough Group Water Scheme on the Mayo / Sligo border has been added.
Areas affected include the towns of Tubbercurry and Ballymote, and a large rural hinterland including the villages of Annagh, Aclare, Bellaghy, Bunnanaddan, Curry, Lavagh, Ballinacarrow, Carroweden, Kilmacteige, Quarryfield and Coolaney.
It also includes customer supplied by the Ogham Group Water scheme in Co Sligo, while Mayo areas affected include Cloontia, Doocastle and the Moylough Group Water Scheme.
Customers are reminded to boil water before consumption, until further notice.
A water sampling plan is starting today for a 2-week period, and the results will be reviewed before further action is advised by the HSE
Irish Water is also increasing its scouring programme over the next few days which might cause some discolouration to water.
Customers who experience discolouration should run the tap until the water runs clear.