# The Surface Waters (Shellfish) (Classification) Regulations (Northern Ireland) 1997, Regulation 5: Guideline values and no deterioration principle

Extent: N.I.
Status: prospective

In discharging its pollution control functions in relation to any waters classified under these Regulations, the Department shall—
(a) endeavour to respect the guideline values and comments specified in Schedule 2; and
(b) take into account the principle that implementation of measures taken pursuant to Directive 79/923/EEC may on no account lead, either directly or indirectly, to increased pollution of coastal or brackish waters.

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Source: https://www.legislation.gov.uk/nisr/1997/489/regulation/5 (the official version)
Page: https://openlegislation.uk/surface-waters-shellfish-classification-regulations-northern-ireland-1997/regulation-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.