The Water Framework Directive (Classification, Priority Substances and Shellfish Waters) Regulations (Northern Ireland) 2015 No. 351

Environmental standards for priority substances N.I.

4.  Without prejudice to existing obligations and subject to regulation 5, the Department must apply the environmental quality standards set out in Part 2 of Schedule 1for the priority substances numbered 1-33 in Table 47 of Part 2 of Schedule 1 to surface waters or parts thereof.