# The Water Supply (Water Quality) Regulations (Northern Ireland) 2017, Regulation 13: Interpretation of Part 5


In this Part, in relation to residual disinfectant or a parameter specified as item 1, 2, 3, 4 or 6 in column (1) of Table 3 in Schedule 3, and the supply of a volume of water within one of the ranges shown in column (3) of that Table “the number of samples per year” means the applicable number shown in column (4) of that Table.

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Source: https://www.legislation.gov.uk/nisr/2017/212/regulation/13 (the official version)
Page: https://openlegislation.uk/water-supply-water-quality-regulations-northern-ireland-2017/regulation-13
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.