
For the purposes of the water fittings regulations in England, Wales and Northern Ireland, byelaws in Scotland, approved contractor schemes are voluntary organisations for plumbers and plumbing contractors set up in accordance with regulation/byelaw 1(2).
Approved contractors are either approved by a water undertaker or an organisation appointed by a regulator.
There is no mandatory requirement for plumbers to join a scheme. There are currently four approved contractor schemes, some operate nationally and others in defined areas.
Water Industry Approved | Approved by Regulator |
Water Industry Approved Plumbers’ Scheme (WIAPS) operated on behalf of 18 water undertakers | |
Chartered Institute of Plumbing and Heating Engineering (CIPHE) | |
Scottish and Northern Ireland Plumbing Employers’ Federation (SNIPEF) |
Some schemes restrict membership to qualified plumbers who can certify all types of plumbing work in any premises, whilst others offer sector schemes open to plumbing contractors who can certify a limited scope of plumbing work.

For further information about each scheme, including how to join and the benefits of membership and using and approved contractor please contact the schemes or refer to the WaterSafe website.
WaterSafe it is not an approved contractor scheme. It is a free to use public website which lists members of approved contractor schemes and a ‘brand name’ for promotion of approved contractors.
Regulations & Byelaws which apply include but are not limited to:
Relevant guidance includes but is not limited to:
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