21.—(1) The Department must classify each body of groundwater identified for the purposes of regulation 5 of the 2003 Regulations according to its chemical status in accordance with regulation 9 of the Groundwater Regulations (Northern Ireland) 2009(1).
(2) The Department must classify each body of groundwater identified for the purposes of regulation 5 of the 2003 Regulations according to its quantitative status in accordance with Schedule 3.
(3) The results of classification in accordance with paragraph (1) and paragraph (2) must be reported within each river basin management plan as follows—
(a)a map for the relevant river basin district illustrating the classification of the chemical status for each body of groundwater, colour-coded in accordance with Table 4 of Schedule 4;
(b)a map for the relevant river basin district illustrating the classification of the quantitative status for each body of groundwater, colour-coded in accordance with Table 5 of Schedule 4.
(4) The Department must review the classification required by paragraphs (1) and (2) at least once in every six years in accordance with the requirements of the Water Framework Directive.