WTO notification · TBT
United KingdomUpdated: check whether it is now adopted or in force
Official title
Amended Regulator Specifications made under Water Supply (Water Fittings) Regulations 1999 (106 pages in English). For clarity this notification is regarding the amendment of Regulator Specifications under the (Water Fittings) Regulations 1999 rather than the Regulations themselves.
The United Kingdom issued an addendum on 18 June 2026 to the earlier TBT notification G/TBT/N/GBR/55. Addenda often report that a measure was adopted, changed, postponed or withdrawn. The measure was first notified on 15 February 2023. The comment period closed on 16 April 2023.
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Products related to Water Closet (WC) Suites: Water Closet suites (flushing cisterns and pans etc.); Components for Water Closet Suites (inlet valves, flushing devices, cisterns etc.); Backflow prevention arrangements and devices for water systems. Plastics: tubes, pipes, fittings etc. (HS
The comment period closed on 16 April 2023. You can still raise concerns about the measure with your country's WTO TBT enquiry point, quoting the document symbol G/TBT/N/GBR/55/Add.1; it can take them up with the United Kingdom.
Find your country's enquiry point on WTO ePing (opens in a new tab)Latest notice (G/TBT/N/GBR/55/Add.1, 18 June 2026)
Amended Regulator Specifications made under Water Supply (Water Fittings) Regulations 1999 (106 pages in English). For clarity this notification is regarding the amendment of Regulator Specifications under the (Water Fittings) Regulations 1999 rather than the Regulations themselves.
Following notification of the draft measures in G/TBT/N/GBR/55 the entry in to force date has been changed from July 2024 to 6 May 2027. This addenda updates this and includes a link to the final version of the specifications.
These measures result from the Water Supply (Water Fittings) Regulations 1999 (‘the Regulations’), as they apply in England and Wales, and regulate how water systems are designed, installed and operated. The Regulations require water fittings to be an appropriate quality and standard and suitable for the circumstances in which they are used. To meet these requirements, Regulator Specifications can be approved to provide detailed performance characteristics to ensure, amongst other things, that a fitting will not cause contamination of the water supply thereby protecting human health. These measures amend the Regulator Specifications that relate to: the design and performance of Water Closet suites and their components; backflow prevention arrangements and their classifications; and, relevant testing requirements. The amendments, to prevent water from a Water Closet cistern backflowing into a clean drinking water supply, will: introduce a new backflow prevention arrangement for Water Closets; and, apply appropriate testing requirements. Regulator Specifications are relevant to the compliance of certain water fittings in Scotland with the Water Supply (Water Fittings) (Scotland) Byelaws 2014 and in Northern Ireland with the Water Supply (Water Fittings) Regulations (Northern Ireland) 2009.
Every notice about this measure published here, newest first. Each one is the notifying member's own text.
AddendumG/TBT/N/GBR/55/Add.1
Amended Regulator Specifications made under Water Supply (Water Fittings) Regulations 1999 (106 pages in English). For clarity this notification is regarding the amendment of Regulator Specifications under the (Water Fittings) Regulations 1999 rather than the Regulations themselves.
Following notification of the draft measures in G/TBT/N/GBR/55 the entry in to force date has been changed from July 2024 to 6 May 2027. This addenda updates this and includes a link to the final version of the specifications.
Regular notificationG/TBT/N/GBR/55
Comment deadline: Closed on 16 April 2023
Amended Regulator Specifications made under Water Supply (Water Fittings) Regulations 1999 (106 pages in English). For clarity this notification is regarding the amendment of Regulator Specifications under the (Water Fittings) Regulations 1999 rather than the Regulations themselves.
These measures result from the Water Supply (Water Fittings) Regulations 1999 (‘the Regulations’), as they apply in England and Wales, and regulate how water systems are designed, installed and operated. The Regulations require water fittings to be an appropriate quality and standard and suitable for the circumstances in which they are used. To meet these requirements, Regulator Specifications can be approved to provide detailed performance characteristics to ensure, amongst other things, that a fitting will not cause contamination of the water supply thereby protecting human health. These measures amend the Regulator Specifications that relate to: the design and performance of Water Closet suites and their components; backflow prevention arrangements and their classifications; and, relevant testing requirements. The amendments, to prevent water from a Water Closet cistern backflowing into a clean drinking water supply, will: introduce a new backflow prevention arrangement for Water Closets; and, apply appropriate testing requirements. Regulator Specifications are relevant to the compliance of certain water fittings in Scotland with the Water Supply (Water Fittings) (Scotland) Byelaws 2014 and in Northern Ireland with the Water Supply (Water Fittings) Regulations (Northern Ireland) 2009.
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