KUKmat4 BS 6920 Drinking Water Materials Testing & Certification
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What is KUKmat4
Understanding KUKmat4 BS 6920 Certification
KUKmat4 is Kiwa Watertec’s Certification for testing of non-metallic materials and components intended for contact with drinking water, in accordance with BS 6920. This standard is a legal requirement for UK Water Regulations compliance
Our KUKmat4 service covers:
- Full suite of BS 6920 tests (odour, flavour, colour, turbidity, extraction of harmful substances, growth of aquatic microorganisms, extraction of metals)
- Testing for research & development, product approvals, and regulatory submissions
- Support for KUKreg4, WRAS, and Regulation 31 DWI approvals
Why Choose Kiwa Watertec
Trusted by Manufacturers & Suppliers Worldwide
Global Accreditation
Accredited testing (ISO/IEC 17025) in DAkkS and UKAS-recognised laboratoriesExpert Team
End-to-end project management from UK-based expertsRapid Certification
Fast turnaround and streamlined certification processInternational Acceptance
Results accepted by WRAS, DWI, and international authoritiesDedicated Support
Dedicated technical support and transparent communicationOur Testing Process
How KUKmat4 Works
Product Review
Accredited Testing
Certification Decision
Certification Granted
Ongoing Support
Business Benefits
Why KUKmat4 Certification Matters
Compliance:
Market Access:
Speed:
Trust:
Recognition:
Risk Reduction:
Supporting the Water Industry Supply Chain
• Manufacturers of non-metallic materials and components, pipes, coatings, lubricants, seals and components
• Suppliers and distributors of water system materials and components
• Specifiers, consultants and compliance professionals
• International businesses entering the UK market and markets that adopt UK requirements
Standards & Regulations We Work To
Our KUKmat4 testing and certification services are delivered in line with the most recognised water safety standards and regulatory frameworks:
BS 6920 – Suitability of Non-Metallic Materials for Contact with Drinking Water
Water Supply (Water Fittings) Regulations 1999
Regulation 31 (DWI) – Approval of Products for Use in Public Water Supply
Product Approval Schemes for Drinking Water Materials
Frequently Asked Questions
Q: Is KUKmat4 testing accredited? Where is it carried out?
A: Yes. All testing is performed in ISO/IEC 17025-accredited laboratories (DAkkS). Kiwa’s UK team manages the process, with testing in Germany and the UK.
Q: What products require BS 6920 testing?
A: Any non-metallic material or component intended for contact with drinking water, including pipes, fittings, coatings, lubricants and seals.
Q: Can KUKmat4 support other regulatory or market approvals, such as DWI Regulation 31?
A: Yes. Our BS 6920 test reports are widely accepted by UK and international regulatory bodies for component and materials approvals, including submissions under DWI Regulation 31. We provide clear guidance on how your results can be used to support multiple approval routes.
Q: How quickly can I get certified?
A: Our streamlined process enables fast turnaround, with direct access to our technical team.
Make a Splash in Compliance – Certify with KUKmat4
Partner with Kiwa Watertec to ensure your materials and products meet the highest standards for drinking water safety and compliance.