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)
However, the substance does not cause any damage to human health if it's consumed.
MIB is produced by algae found in lakes, rivers, streams and reservoirs. It can be smelled at very low concentrations. Seasonal increases in naturally occurring algae or bacteria in water sources can cause a rise in MIB above the taste and odour threshold for some people, Irish Water say in a statement.
"It is impossible to predict the onset of an incidence of MIB, or how long it will last. However, it will likely be resolved in the short term as the current rain spell continues and the weather cools. We will continue to keep this water supply under close review and will continue monitor for levels of MIB in the water." they added.
Speaking about the detection of MIB in the drinking water, Tom Cuddy, Head of Asset Operations with Irish Water said “Our primary focus is the protection of public health and we would like to reassure customers that the water coming from the drinking water plants serving Dublin and Wicklow is safe to drink. We understand the concerns raised by some customers in relation to the smell or taste of their drinking water.
"While the smell and taste can be unpleasant for some customers, MIB is not toxic or harmful and the water remains safe to drink. As a precaution, we have increased testing on these supplies and are keeping the situation under close review.”
READ NEXT:
- Moment Ryanair pilot performs remarkable 'horizontal' landing in strong winds
Heartbroken family pay tribute to 'courageous' Irishman, 23, killed in action fighting in Ukraine
Expert says Irish households need to start preparing as clocks go back on October 30
Vicky Phelan's latest health update as she continues to fight cancer
Barry Keoghan opens up about fatherhood, girlfriend and living with famous pals
