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

Limited Scope Contractors

When planning a plumbing project, you may find it necessary to hire specialised approved contractors.

These approved Limited Scope Contractors include:

  • Groundworkers who work with underground water supply pipes
  • Installers of commercial catering equipment
  • Installers of chilled water appliances
  • Reduced Pressure Zone Testers

These contractors are not approved WaterSafe plumbers, but are recognised by the water company schemes: APLUSTAPSWaterMark and WIAPS to work in these areas.

They will ensure all their work complies with the Water Fittings Regulations and Byelaws.


External Service groundworkers specialise in the site management, installation, repair, or renewal of underground water supply pipes.

Catering installers

Approved catering installers have passed an assessment certifying their ability to install commercial catering equipment, such as vegetable cleaners and dishwashers.

Chilled water appliances

These contractors are called ‘Point of Use’ workers and are certified to install chilled water appliances in compliance with the Water Fittings Regulations and Byelaws.

Reduced Pressure Zone Testers

Reduced Pressure Zone Testers are trained and authorised to test Reduced Pressure Zone valves, otherwise known as RPZ valves or Type BA backflow protection devices. These devices stop water flowing in the wrong direction. By law, these devices must be tested at least once a year to ensure they are working properly to protect the water supply.

The installation, commissioning, and testing of RPZ valves should only be carried out by accredited and approved testers, in accordance with the 
Water Suppliers’ Approved Installation Method AIM-08-01.

Find Your Nearest Approved Plumber

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WaterSafe Approved Contractors' Scheme Operators

Anglian WaterAssociation of Plumbing & Heating ContractorsCIPHESevern TrentSNIPEFThames WaterWIAPS