Find an approved installer

WaterSafe is a free online directory listing thousands of WaterSafe approved plumbers across the whole UK. It can also be used to search for installers, approved by contractor schemes, who do specific types of work such as testing RPZ valves and or installing supply pipes.

To find out more visit



How they search:

The search is based on post code only. If you do not know the post code enter the first part of a post code near to you.
Results are displayed showing those contractors nearest to you. e.g. for “NP11 4EG” enter “NP11”


Featured links are those contractors who may be based further away from the post code area but who offer services in the area e.g. regional or national companies.


Approved plumbers are WaterSafe registered. All other installers/testers are affiliate members of the seven Approved Contractor Schemes.

Plumbers: Approved Plumbers can work on all parts of a plumbing system, from the external supply pipe right up to the kitchen and bathroom taps.

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

Catering Installers: Approved Catering Installers can install commercial kitchen equipment.

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

RPZ Valve Testers: For commissioning and testing RPZ backflow prevention valves.