Water Industry Approved Plumbers Scheme WIAPS
The Water Industry Approved Plumbers Scheme (WIAPS) is a UK Approved Contractors’ Scheme. It is administered by Water Regs UK on behalf of the UK water undertakers and operates in most areas of England and Wales.
WIAPS provides water industry backed accreditation to qualified plumbers and other sector workers. Membership is free for plumbers, groundworkers and reduced pressure zone (RPZ) valve testers, but fees apply for other sector schemes.
WIAPS accredited plumbers must comply with The Water Supply (Water Fittings) Regulations 1999 for every installation and issue a certificate stating that the work complies with the Regulations. WIAPS plumbers must also be available to be audited periodically by the local water company.
[edit] Related articles on Designing Buildings
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
CIAT confirm the winners of the 2026 architectural technology awards.
Government launches a one stop shop for flood preparedness.
Sir Edwin Lutyens: Britain's greatest architect? Book review.
CIOB publishes free template to help assess and manage risks.
ECA's reflections on Party Conference season
Burnham wants to be confident of winning before asking for a fresh mandate.
New Chief Construction and Scientific Adviser
Sergio Cavalaro, Professor of Infrastructure Systems at Loughborough University.
Building safety levy for England
CIAT publish estimator tool for members.
Water sector faces a growing crisis that could slow the delivery of vital infrastructure.
Undervaluing our industrial past
Heritage value changes as taste for building styles changes.
Changing expectations around competence and compliance
New information sheet from CIAT.
Grenfell investigation files passed to CPS
Angela Rayner apologises on behalf of the British state.
Electrical contractors need to understand the practical implications.

















