See HERE for a report of a reference in the Seanad (the upper house of the Irish Parliament) to the drinking water crisis in Galway.
Apparently, one of the Ministers of the Government has publicaly expressed the view that there is nothing wrong with the public drinking water supply of Galway, save for the fact that the water is undrinkable.
This Minister is a close colleague (and fellow party member) of the responsible Minister (Minister for the Environment, Heritage and Local Government).
The latest anecdotal evidence (gossip) indicates that the source of the pollution is human sewage. Apparently, the local authorities have been discharging the waste from their sewage plants into Lough Corrib. The drinking water is then taken from the Corrib.