Installer: Overview

W​hat is an approved contractor sector scheme?

An approved contractor sector scheme is different to an approved contractor scheme in that its members are only recognised as being qualified to certify some plumbing work i.e. that defined in the sector scheme scope of accreditation.

Not all approved contractor schemes operate sector schemes.

One of the acceptance criteria for sector scheme membership is having a recognised qualification which demonstrates they are competent to undertake specific plumbing work in compliance with the water fittings regulations/byelaws.

There are a number of sector schemes including:
  • Groundworkers: these can work on supply pipes up to the internal stop valve
  • Catering Installers: these install commercial catering equipment
  • Point of use installers: these install cold water chillers connected directly to mains
  • RPZ valve testers: these undertake commissioning and compliance testing of RPZ valves


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Compliance with this information should not be relied upon as guaranteeing no enforcement action will be taken by water undertakers. Water Regs UK accepts no liability for loss, indirect or consequential loss arising from or in connection with this guidance document.