About REGULATION 4 Compliance
For water installations in the UK, the Water Supply (Water Fittings) Regulations 1999 will need to be complied with. In respect of Water fittings and their requirements, reference should be made to Regulation 4, where Regulation 4(1) refers to ‘every water fitting should be of an appropriate quality or standard’ and also Regulation 4(2) provides the options to demonstrate compliance i.e. CE Marking where applicable, Appropriate British or European standards, and also a specification approved by the regulator.
For many years the test laboratories’ have used the regulators specification as a series of tests
as an option to demonstrate compliance with Regulation 4.
Historically, the established voluntary practice has been for ISO17025 accredited laboratories to issue test reports against these Specifications, and then on behalf of the manufacturer forward a Technical file incorporating these results to another scheme WRAS – (Water Regulations Advisory Scheme) to issue a certificate of approval. The process of issuing the certificate has included a review by the WRAS staff and approval being issued through meetings attended by representatives of the UK water suppliers. When water suppliers are enforcing these Water Regulations, they look for evidence of compliance of Regulation 4 and the common practice has been delivery of a WRAS certificate.
In recent years manufacturers have also asked Kiwa and NSF to provide an equivalent declaration of compliance with Regulation 4, which has been done using a Kiwa or NSF UK Regulation 4 certificate of approval. The tests are based on appropriate European standards or the Regulators Specification, performed at their ISO17025 test laboratories, and the certificate is issued through a system complying with ISO17065.
Please see alternative options below to show REGULATION 4 compliance:
KIWA KUKreg4 Certification
The Kiwa UK Regulation 4 Product Approval Scheme (KUKreg4) provides an alternative to the established way of demonstrating compliance and traditional methods of obtaining approvals and certificates.
All approvals are listed on their public website www.kiwa.com/gb/en/about-kiwa/water-products which is regularly visited by UK water suppliers for checking product approvals. Kiwa are working closely with the water suppliers for a better understanding and visibility of the processes in the joint interest of water quality and safety.
Download KUKreg4 Brochure
NSF REG4 Certification
The NSF REG4 certification scheme for the UK market allows plumbing products and materials that are in contact with drinking water to demonstrate compliance with the UK Water Supply (Water Fittings) regulations. NSF developed this certification as a streamlined way for plumbing product manufacturers and materials suppliers to conform with UK regulations and gain timely access to the UK market.
All listings can be found on their public website www.nsf.org/certified-products-systems
Download NSF REG4 Brochure