The algal bloom has arisen due to the extended period of dry weather, elevated temperatures and reduced water levels in the lake.
Water customers in Corofin town and its environs and in Ruan village, as well as customers of the Killeen Group Scheme Supply are affected by the alert.
The HSE, in conjunction with Irish Water and Clare County Council, is advising customers that tap water should not be used until further notice except for the flushing of toilets, flushing of internal house plumbing systems and laundry. Customers are also advised to discard ice cubes in fridges and freezers.
Drinking water tankers are being provided from 10.30pm tonight at the grotto in Corofin town and adjacent to the Dalcassion pub in Ruan village.
Further information will be disseminated via the media, on www.water.ie and the Irish Water Customer Contact Centre: 1890 278278. Customers are requested to advise Irish Water or Clare County Council of elderly or disabled people who may require special assistance.
Meanwhile, Clare County Council is advising lake users and farmers with lands bordering Inchiquin Lake are being advised not to bathe in the lake or allow animals to enter the lake. Farmers and dog owners are also being advised not to allow their animals to drink from the lake. Further information can be obtained from Clare County Council’s Environment Section at 065 6846331.