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The Water Supply (Water Quality) Regulations 2018
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Risk assessment
27.—(1) This regulation applies to every treatment works and supply system from which water is supplied for regulation 4(1) purposes.
(2) Every water undertaker or supplementary licensee must carry out a risk assessment of each of its treatment works and connected supply system in order to establish whether there is a significant risk of supplying water from those works or supply system that would constitute a potential danger to human health or is likely to be unwholesome.
(3) Every water undertaker or supplementary licensee must keep its risk assessments under continuous review.
(4) The Welsh Ministers may by notice served on a water undertaker or supplementary licensee, require a risk assessment or review to be carried out by a date specified in the notice.
(5) Where a water undertaker or supplementary licensee becomes aware of any factors which make it likely that a risk assessment under this regulation would establish that there is a significant risk of supplying water that would constitute a potential danger to human health, or that is likely to be unwholesome, it must serve a notice on the Welsh Ministers specifying the relevant factors.
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