Fittings Approvals


F2 Application Form 

Terms and Conditions 
 Secondary Fitting Approvals

Contact Details of Laboratories

WRAS Fitting Approval Guidance
Roles and Responsibilities 

Mechanical Test Requirements

Comparisons against the Regulators' Specifications

Materials Approvals


M2 Application Form 

 Secondary Material Approvals
WRAS Material Approval Guidance 
Contact Details of Laboratories 


When installing a product which will carry or receive water from the public mains water supply in the UK, it is a criminal offence if it does not comply with the Water Supply (Water Fittings) Regulations, Byelaws in Scotland. These require that a water fitting should not cause waste, misuse, undue consumption or contamination of the water supply and must be of an appropriate quality and standard.

The Regulations are typically in effect between the boundary of a property and the point of discharge as illustrated below. For further information click here:


WRAS Approval is the best way to demonstrate compliance as it is granted directly by representatives of the water suppliers and is therefore accepted by every water supplier in the UK.

WRAS Fitting Approval: Whole products such as valves, boilers & showers undergo mechanical and water quality testing. This type of approval demonstrates full compliance with requirements of the regulations and byelaws, provided the fitting is installed according to any conditions given with the approval.

WRAS Material Approval: Non-metallic materials & components, such as rubber sheet material & O rings, undergo testing only for their effects on water quality.  This type of approval demonstrates that the non-metallic material/component does not itself contaminate the water and therefore satisfies this particular requirement of regulations and byelaws.