Irish Water has said that tap water in Dun Laoghaire-Rathdown, Dublin City and North and East Wicklow areas is safe to drink - after residents complained about an "unpleasant" smell and taste.
Some homeowners even said the water coming out of their taps was "moldy" in recent weeks, leading Irish Water to intervene with special tests.
They say that results has indicated the presence of low levels of a naturally occurring substance called MIB (Methylisoborneol)