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Water Regulations Advisory Scheme (WRAS)

The Water Regulations Advisory Scheme Ltd is funded by all the UK Water Suppliers and is operated independently of water fittings test laboratories.

Products which carry or receive water from the public mains water supply in the UK must comply with the Water Supply (Water Fittings) Regulations or Scottish Byelaws which stipulate 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’.

WRAS approval covers all plumbing systems, water fittings, and equipment that is supplied with water from the public water supply, typically between the boundary of a property and the point of discharge.

The approval system can be split into 2 sections:

1. WRAS Material Approval. This applies to non-metallic materials and components such as rubber sheet material or plastic pipe connectors. These must undergo testing only for their effects on water quality (BS 6920). Testing to BS 6920 demonstrates that the material does not contaminate the water and therefore satisfies the requirements of regulations and byelaws.

2. WRAS Product Approval. This applies to complete products such as valves, boilers and showers which must undergo water quality testing (BS 6920) of their non-metallic component parts in addition to mechanical testing. This approval demonstrates full compliance with requirements of the regulations and byelaws, provided the fitting is installed according to any conditions given with the approval.

The Water Quality Centre offers testing of materials and components to BS 6920 for which a WRAS Material Approval is required, or which are used as part of an application for a WRAS Product Approval.

© Thames Water Utilities 2014