Cause of Mass Fish Kill in Blackwater River Remains Unidentified
Cork: An investigation into the mass die-off of salmon and brown trout in the Blackwater River near Mallow, Co. Cork has concluded without identifying a definitive cause. Approximately 32,000 fish were lost in the incident, which authorities now believe was triggered by an unknown environmental factor.
The official report confirmed that, despite extensive testing, no evidence of chemicals, pesticides, heavy metals, or disease was detected in the affected fish. Investigators concluded that the deaths were most likely caused by a waterborne irritant present in the river for a short period, around three days prior to the event.
However, the report also noted that failure to conduct immediate water sampling may have hindered efforts to determine the precise cause. Environmental groups have criticised this as a significant lapse.
Inland Fisheries Minister Dooley acknowledged the “serious impact” of the incident on local fisheries and river communities. He confirmed that while the investigation has now closed, the exact source of the problem remains unknown.
The Department of Climate and Environment stated that ongoing monitoring shows no current water quality issues, and that results from the Mallow Water Treatment Plant confirm the water supply remains safe for consumption. Fishing activities on the Blackwater have since resumed.
Irish Samachar English News
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