A water safety notice has been issued by Cavan County Council to Consumers of the Mountain lodge Group Water Scheme.
The areas affected are Laragh, Tunnyduff, parts of Poles, and Mountain Lodge in Cavan.
Samples from the above scheme have resulted in elevated levels of aluminium and manganese being detected leaving the treatment plant and in the network.
The drinking water quality is therefore considered to be significantly compromised and an immediate risk to your health.
Cavan County Council have said to use an alternative safe source of drinking water.
Temporary water tanks are located at Laragh National School and Tunnyduff National School.at present.