Lough Neagh is the largest lake in the UK.
It provides drinking water for 40% of Northern Ireland's population.
Detection of superbug-creating genes raises public health concerns.
Briefing: ‘Drinking from a fetid pond’: superbug-creating genes found in UK’s largest lake
Strategic angle: Genes capable of creating antibiotic-resistant superbugs have been detected in Lough Neagh, which supplies drinking water for 40% of Northern Ireland.