Water Regulations Advisory Scheme

After its creation in 1999[2] the WRAS term became a 'shorthand' within the UK as a conformance mark that demonstrates that an item complies with high standards set out by water regulations 1999 in the United Kingdom.

Water Regulation 4 compliance is a way of proving that the item meets PART of the above legislation.

So a plumbing fitting might be tested and approved - but if installed and/or operated incorrectly might breach the Water Regulations 1999.

Service provider, NSF and KIWA[3] offer third party testing for WRAS approval.

[4] Although not widely known other companies such as KIWA[5] offer their own direct testing and approval services for a plumbing fitting (Water Regulation 4 compliance).