The derogation increases the application limit of 170kg/ha of livestock manure to 250kg/ha each year. In Ireland, the derogation is of critical importance to the dairy industry. The current derogation will run to the end of 2025, when the fifth programme concludes. However an interim review will be undertaken in 2023, that will include an assessment of water quality. If this water quality assessment indicates average water quality above a threshold of 50 mg/l NO3, or increasing trends, or eutrophic water bodies or water bodies that could become eutrophic, the derogation application limit of 250kg/ha will be reduced to 220kg/ha in farms in these catchment areas from 2024.