Uisce Éireann has begun an investigation following the recent discovery of a fatberg in Kenmare.
Fatbergs are extra-large lumps of solid waste in sewerage systems, usually made of congealed fat and personal hygiene products that have been flushed down toilets and sinks.
They can block sewers and force raw sewage to back up into premises, rivers, and other areas causing environmental and public health hazards.
Uisce Éireann is investigating the source of the fatberg, at the EPA's request.
The utility has also started a pilot programme to raise awareness of the problems fatbergs cause.
The Environmental Protection Agency (EPA) was notified of a black/grey liquid flowing into the River Finnihy at the Cromwell’s Bridge pump station in Kenmare on the evening (17:10) of Friday, 18 April.
Uisce Éireann’s initial investigation found that heavy rainfall had caused the fatberg, which had reached the pump station, to be discharged into the River Finnihy during a 30-minute overflow discharge.
Analysis of the material confirmed it contained high level of fats, oils and greases or FOGs, but no petroleum.
The EPA has requested Uisce Éireann investigate the source of the FOGs to prevent it happening again.
FOGs typically originate from commercial kitchens where foods like vegetable oils, lard, butter, animal fats, and sauces are washed down the drain.
Uisce Éireann’s pilot programme is to create awareness about the correct disposal of FOGs among all such establishments in the Kenmare area.
The water utility team will also engage with external agencies and business groups before reassessing the programme before August.
