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Kiwa UK Water Regulation 4 Testing and Certification (KUKreg4)

The Kiwa UK Regulation 4 Product Approval Scheme (KUKreg4) is a robust method for demonstrating compliance with the UK Water Supply (Water Fittings) Regulations 1999.   
   

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About the Scheme

Kiwa UK Regulation 4 (KUKreg4)

KUKreg4 ATS1+ logo KUKreg4 ATS3 Logo

 

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.

Who's it for?

KUKreg4 was created for manufacturers and distributors of sanitary and plumbing products and components intended for installation in the UK who require their products to be compliant with UK Water Regulation 4.

What is KUKreg4?

Developed by Kiwa Watertec, KUKreg4 allows you to demonstrate compliance and is accredited to ISO/IEC 17065. It covers a wide range of products, including sanitary tapware, pipes and fittings, valves, appliances, catering equipment, and WCs, with two conformity attestation levels to suit your business needs.

All testing is controlled and conducted within the Kiwa laboratories, that are ISO/IEC 17025 accredited by UKAS, RVA, Accredia.

We offer two distinct levels: Level 3 and Level +1.

Why it Matters

The Importance of Water Supply (Water Fitting) Regulations

The Water Supply (Water Fitting) Regulations are essential for public health, safeguarding water supplies and promoting efficient water use within premises across the UK.

These regulations set legal requirements for the design, installation, operation and maintenance of water fittings, systems, and appliances. Their primary aim is to prevent the contamination of drinking water and to avoid misuse, waste, undue consumption and erroneous measurement (Reg 3.(2)).

Water Regulation 4
UK Water Regulation 4, part of the Water Supply (Water Fittings) Regulations 1999, ensures that all water fittings supplied by a manufacturer meet appropriate quality and standards. Specifically, Regulation 4(1)(a) requires that water fittings be suitable for their intended use and comply with applicable requirements.

This regulation is crucial for maintaining the safety and quality of drinking water in the UK.

Kiwa’s KUKreg4 allows you to demonstrate compliance with Regulation 4(1)(a), ensuring your products meet the necessary standards.

Applicable Regulations:
England & Wales: The Water Supply (Water Fittings) Regulations 1999
Scotland: The Water Supply (Water Fittings) (Scotland) Byelaws 2014
Northern Ireland: The Water Supply (Water Fittings) Regulations (Northern Ireland) 2009

Scope of Application:
These regulations apply to all premises where water is supplied by a water company, from the point of entry into the property (boundary) to its use through plumbing systems or water appliances.

Compliance Responsibility:
Legal duty for compliance falls on all users, owners, or occupiers, as well as anyone installing plumbing equipment, water fittings, and appliances. Water companies are obligated to enforce these laws and inspect new or existing  installations to ensure compliance.

Watertec KUKreg4 Brochure

Our New KUKreg4 Brochure is here! Download for more information on the scheme and the quickest way to become certified.

KUKreg4 Brochure 2025

Manufacturer Benefits

Achieving a sought after KUKreg4 Certification Mark and securing an online listing instantly informs your customers that your products have undergone rigorous, independent evaluation by a global TIC company.

Comprehensive Solution

Get a complete testing and certification package for international product safety.

Wide Acceptance

Enjoy the acceptance of test reports across the UK and Europe.

Global Reach

Potential acceptance of test reports by countries outside Water Regulation 4.

Speedy Market Access

Accelerate your market entry with a streamlined testing and certification process.

Cost Efficiency

Reduce overall costs and maximise your budget.

"Achieving the Kiwa UK Regulation 4 certification has significantly boosted our product credibility. Our customers trust the quality and compliance of our products more than ever.”

Lochinvar UK

Additional Advantages

Ensuring your products have the necessary certification to meet utility requirements is essential for regulatory acceptance.

Combined Certification

Integrate with other Kiwa certificates for compliance with European standards like EN1111, EN817, EN200, and EN13959.

Independent Evaluation

Show your product has undergone rigorous, independent testing by a global TIC company.

Market Differentiation

Stand out with third-party certified products.

Ongoing Compliance

Maintain compliance with changing regulations through Level +1’s annual audits.

Enhanced Visibility

Increase your product’s findability by water suppliers, architects, and specifiers via the KUKreg4 database.

Seamless Process

Enjoy a smooth certification process with all decisions made within Kiwa.

Trusted Database

Regularly used by industry professionals as a source for Regulation 4 compliant products.

Annual Surveillance

For Level +1, maintain certification without a 5-year retest, ideal for large product ranges and combined factory inspections.

KUKreg4 has now been officially recognised by WSD

KUKreg4 has now been officially recognised by WSD (Water Supplies Department) Hong Kong for use in General Acceptance (GA) system, a huge milestone for the scheme representing a tremendous amount of work. 

The Water Supplies Department (WSD)
The Government of the Hong Kong Special Administration Region

WSD, Hong Kong
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