Water Industry Approved Plumbers Scheme (WIAPS)

WIAPS is the largest of the four UK Approved Contractors’ Schemes. Approving plumbers and water professionals on behalf of 18 UK water companies. 

What is WIAPS?

Find out more about the scheme and
why you should use a WIAPS Installer

Become a WIAPS Member

Find out more about the benefits and how to join

Why use a WIAPS installer

  • Qualifications verified

  • Supported by 18 water companies

  • Installers are subject to audit check compliance

  • All approved businesses must have a complaints process and public liability insurance

Why join WIAPS

  • No prior notification required for some work

  • Customer reassurance you’re qualified

  • Promoted by local water company

  • Online business listing with WaterSafe


NEWS


WaterMark to join WIAPS

WaterMark to join WIAPS


We are pleased to share that from 1st April 2025, WaterMark, the Approved Contractor Scheme managed by Severn Trent and Hafren Dyfrdwy, will join the Water Industry Approved Plumbers' Scheme (WIAPS). This transition, managed by Water Regs UK, will streamline processes for installers and improve the protection of drinking water for consumers. Key Benefits for Installers: Avoid dual memberships,

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RPZ AIM Issue 3

RPZ AIM Issue 3


Following public consultation a new version of the approved installation method for RPZ valves (backflow prevention devices) or RPZ AIM for short, came into force on 1 st January 2025. The RPZ AIM sets out how to install and test RPZ valves to comply with the Water Supply (Water Fittings) Regulations, Byelaws in Scotland. These legal requirements apply to all premises which have, or will have, a

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Consultation on draft 2024 RPZ AIM

Consultation on draft 2024 RPZ AIM


The Water Supply (Water Fittings) Regulations, byelaws in Scotland, apply to all premises which have, or will have, a mains water supply. The purpose of these legal requirements being to safeguard drinking water supplies by preventing contamination, waste, misuse, undue consumption and erroneous measurement. On behalf of its subscribers (water undertakers who enforce the regulations and have the

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OUR PARTNERS

WIAPS is administered by Water Regs UK in collaboration with 18 UK water companies




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