Classification of surface waters
20.—(1) Subject to paragraph (2), the Department must classify each body of surface water identified for the purposes of regulation 5 of the 2003 Regulations according to its ecological status, or its ecological potential as the case may be, and its chemical status.
(2) The Department must classify—
(a)the ecological status of bodies of surface water in accordance with Part 1 of Schedule 2;
(b)the chemical status of bodies of surface water in accordance with Part 2 of Schedule 2;
(c)the ecological potential of heavily modified and artificial bodies of surface water in accordance with Part 3 of Schedule 2.
(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 ecological status for each body of surface water, colour-coded in accordance with Table 1 of Schedule 4;
(b)a map for the relevant river basin district illustrating the classification of the ecological potential of each body of surface water designated as artificial or heavily modified, colour-coded in accordance with Table 2 of Schedule 4;
(c)a black dot on the relevant map produced under sub-paragraphs (a) and (b) to indicate each body of surface water where failure to achieve good status or good ecological potential is due to non-compliance with one or more of the environmental quality standards that have been established for relevant specific pollutants;
(d)a map for the relevant river basin district illustrating the classification of chemical status for each body of surface water, colour-coded in accordance with Table 3 of Schedule 4.
(4) The overall status of bodies of surface water must be determined in accordance with Part 5 of Schedule 2.
(5) The Department must review the classification required by paragraph (1) at least once in every six years in accordance with the requirements of the Water Framework Directive.