# The Water Framework Directive (Classification, Priority Substances and Shellfish Waters) Regulations (Northern Ireland) 2015, Schedule 4: Presentation of monitoring results and classification


Table 1
Surface Water Ecological Status
Ecological status classification
Colour code
High
Blue
Good
Green
Moderate
Yellow
Poor
Orange
Bad
Red
Table 2
Heavily Modified/Artificial Water Bodies Ecological Potential
Ecological potential classification
Colour code
Artificial water bodies
Heavily modified
Good and above
Equal green and light grey stripes
Equal green and dark grey stripes
Moderate
Equal yellow and light grey stripes
Equal yellow and dark grey stripes
Poor
Equal orange and light grey stripes
Equal orange and dark grey stripes
Bad
Equal red and light grey stripes
Equal red and dark grey stripes
Table 3
Surface Water Chemical Status
Chemical status classification
Colour code
Good
Blue
Failing to achieve good
Red
Table 4
Groundwater chemical status
Groundwater chemical status
Colour code
Good
Green
Poor
Red
Table 5
Groundwater Quantitative Status
Groundwater quantitative status
Colour code
Good
Green
Poor
Red

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Source: https://www.legislation.gov.uk/nisr/2015/351/schedule/4 (the official version)
Page: https://openlegislation.uk/water-framework-directive-classification-priority-substances-and-shellfish-waters-regulations-northern-ireland-2015/schedule-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.