# The Water Supply (Water Quality) Regulations 2018, Regulation 29: Water treatment to minimise contamination from pipes


(1) Paragraph (2) applies where there is a risk (“the prescribed risk”) that water supplied by a relevant supplier would, for the reason mentioned in paragraph (3), after leaving the relevant supplier's pipes—
(a) contain a concentration of copper in excess of 2 mg/litre; or
(b) contain a concentration of lead in excess of 10 μg/litre.
(2) Every water undertaker or supplementary licensee which introduces water into the supply system used by the relevant supplier must, subject to paragraph (4), treat the water in such a way as will, in its opinion, eliminate the prescribed risk or reduce it to a minimum.
(3) The reason referred to in paragraph (1) is the presence in the water of a concentration of copper or lead which is attributable to the fact that copper or lead is the major component of such a pipe as is mentioned in section 68(3)(a) of the Act, or its associated fittings.
(4) Paragraph (1) will not require a water undertaker or supplementary licensee to treat water—
(a) if the treatment is unlikely to achieve a significant reduction in the concentration of copper or lead; or
(b) if treatment is not reasonably practicable.

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Source: https://www.legislation.gov.uk/wsi/2018/647/regulation/29 (the official version)
Page: https://openlegislation.uk/water-supply-water-quality-regulations-2018/regulation-29
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.