# The Private Water Supplies Regulations (Northern Ireland) 2017, Paragraph 4: Laboratories


The Department must ensure that the laboratory at which samples are analysed has a system of analytical quality control in accordance with EN ISO/IEC 17025 or other equivalent standards accepted at an international level and is subjected from time to time to checking by a person who is—
(a) not under the control of either the laboratory or the Department; and
(b) approved by the Department for that purpose.

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Source: https://www.legislation.gov.uk/nisr/2017/211/schedule/4/paragraph/4 (the official version)
Page: https://openlegislation.uk/private-water-supplies-regulations-northern-ireland-2017/schedule-4/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.