EPA reports nitrogen levels went up by 10% last year

An 'Early Insight' EPA report has indicated higher levels of nitrogen recorded in waterways in 2025, hindering progress made in 2024

The River Blackwater is one of the 20 representative monitoring sites used by the Environmental Protection Agency's ‘Early Insights’ indicator reports. File picture: Larry Cummins

Early insight nitrogen concentration data show a provisional 10% increase in nitrogen levels in 2025.

The Environmental Protection Agency (EPA) publishes its ‘Early Insights’ indicator reports every six months on nitrogen concentrations in Ireland’s major rivers using data from 20 representative monitoring sites.