Dáil Éireann Debate, Thursday - 9 October 2025
101. Deputy Michael Cahill asked the Minister for Climate, Energy and the Environment to urgently examine the results of the investigations carried out into the source of the pollution that caused the poisoning of tens of thousands of fish in the River Blackwater, and to ensure that it never happens again (details supplied); if he is satisfied with the outcome of this investigation; and if he will make a statement on the matter. [54304/25]
View answerI want to acknowledge the seriousness of the fish kill that occurred on the River Blackwater and its tributaries near Mallow, Co Cork, and I fully recognise the enormous impact this incident has had on local communities, anglers and users of this important river catchment.
The investigation into the fish kill has now concluded and a summary report on the investigation was published on 25 September by Inland Fisheries Ireland on behalf of the inter-agency group set up to coordinate the investigation. This report provides a clear account of the State’s response to, and the investigation into, the incident.
The investigation conclusively ruled out systemic diseases, water quality and discharges and the evidence points to a short-lived waterborne irritant, which dissipated before it could be traced back to a source.
While it is regrettable that no specific cause was found, I can assure the Deputy that this was not due to lack of action or effort but because the event was transient. I am satisfied that every avenue was investigated with over 40 site inspections, 900-chemical screens, pathology tests and extensive monitoring, sampling and surveys carried out by the Inter-Agency Group.
The priority now is to apply lessons learned from this event, strengthen enforcement and build resilience, to ensure that we are better prepared to prevent and respond to any such future incidents.
