Cocaine in Northern Ireland’s lakes and rivers?
It sounds dramatic, but that’s exactly what a new study has uncovered.
And the findings are raising eyebrows far beyond the scientific community.
Researchers analysed nearly 140 samples from major waterways including the River Lagan, Lough Neagh and Lough Erne.
The result? Cocaine — and its chemical by-product — appeared in 91% of them.
And it wasn’t alone. Ketamine, amphetamine, antidepressants, painkillers, even ingredients from toothpaste and deodorant were also present.
So what does that say about everyday life in Northern Ireland?
Water Pollution Warning
According to lead researcher Dr Billy Hunter, “drugs of abuse are not solely an urban problem; they are present right across Northern Ireland.”
He admits he expected high levels around Belfast — but was stunned to see strong traces in places like Lough Erne, a popular recreation spot.

While experts say there’s no immediate risk to people or pets, the environment isn’t so lucky.
Caffeine poses one of the biggest threats, acting as a stimulant to wildlife and disrupting food-chain behaviour.
Antibiotic traces near the River Lagan also raise concerns about resistance — the kind that eventually circles back to humans.
Yes, Northern Ireland’s waters are cleaner than many parts of the UK.
But as Prof Leon Barron of Imperial College warns, “this is no reason to become complacent.”
When even lakes need detoxing, maybe it’s time to rethink what goes down the drain.


