Approved Plumber Search

Find a local plumber you can trust using our free online directory search.

WaterSafe approved plumbers are certified by our national accreditation body, with specific training in the UK’s Water Fittings Regulations and Byelaws.

Hiring a WaterSafe approved plumber ensures that all plumbing work meets high standards and protects the quality of drinking water in your home and business, in England, Scotland, Wales, and Northern Ireland.

Water Support Services search

When planning a plumbing project, you may wish to hire specialised contractors, rather than a fully qualified WaterSafe Plumber.

These Water Support Services contractors include:

  • Groundworkers
  • Catering installers
  • Point of Use

These contractors are not approved WaterSafe plumbers, but they are recognised by the water company schemes APLUS, TAPS, WaterMark and WIAPS to carry out specific types of work in compliance with the Water Fittings Regulations and Byelaws. 


Groundworkers can work on the supply pipe (the underground pipe) supplying your property, up to the internal stop valve.

Catering installers

Catering Installers can install commercial kitchen equipment.

Point of Use installers

Point of Use Installers can install cold water chillers connected directly to the mains.

For further information or help, you should contact the relevant water company scheme.

Emergency Plumber Search

Find a local WaterSafe approved plumber to help with your emergency.

For leaks, burst pipes, or other plumbing emergencies, WaterSafe’s emergency search will give you the contact details of a plumber who can help right away.

If you have no water, very low pressure or concerns about the quality of your water, you should contact your local water company straight away.

Click here for more information about Emergency Plumbers

Installation FAQs

This page provides answers to frequently asked questions about ensuring that plumbing work is in compliance with the Water Fittings Regulations and Byelaws.

Do I need to duct or sleeve hot and cold water pipework if they are embedded in a solid floor?

Yes, you do need to duct or sleeve hot and cold pipework, to ensure the pipework is accessible and/or can be removed for maintenance or repair. For further advice please go to the WRAS website for guidance on concealed fittings.

Is it true that my flexible shower hose must not be able to reach into my WC or bidet?

Yes it is. Any shower hose that reaches into a WC or bidet bowl is a fluid category 5 risk of contamination to your drinking water supply. There are several ways to remove this problem, such as constraining the hose with a clip so that it cannot reach the WC or bidet, fitting a fixed shower screen or simply fitting a shorter hose. For further advice please visit the WRAS website.

I am installing a new water service. How deep should the trench be for water pipes?

There is a minimum and maximum depth at which service pipes should be laid:

  • Minimum depth is 750 mm
  • Maximum depth is 1350 mm.

If an installer wishes to install a service pipe either deeper or shallower than these depths they must notify the local water supplier for permission.

Important note: The gas service should be at 600mm to ensure separation from the water service pipe.

Can I build a new extension over an existing mains water supply pipe?

You should contact your water supplier, as this would prevent access for repair and maintenance. The existing mains water supply pipe will have to be either re-routed around the new extension or it will have to be installed in a duct so that it can be easily removed to allow it to be maintained or repaired.

Can I use blue MDPE polyethylene pipe above ground?

Blue MDPE pipe may be used above ground in situations where it is not exposed to light and is protected against:

  • undue warming
  • freezing 
  • potential contamination from the environment.

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