Water regulations

The Water Fittings Regulations are national requirements for the design, installation and maintenance of plumbing systems, water fittings and water-using appliances. Their purpose is to prevent misuse, waste, undue consumption or erroneous measurement of water and, most importantly, to prevent contamination of drinking water.

Owners and occupiers of premises and anyone who installs plumbing systems or water fittings have the legal duty to ensure that the systems satisfy the regulations. Advanced notice must be given of proposed installations in most cases, so architects, building developers and plumbers have to follow the regulations on behalf of future owners or occupiers.

How do the Regulations affect you?

  • Your plumbing system must be installed and maintained to comply with the regulations.
  • You must prevent contamination of drinking water.
  • You must give advanced notification of installation work.
  • You may benefit from using an Approved Plumbing Contractor.

An Approved Plumber will provide a certificate to state that his or her installation or maintenance work satisfies the regulations. If breaches of regulations are found in the certified work, the legal responsibility falls upon the Approved Plumber and not on the owner or occupier.

Find out more:

View our general leaflet on The Water Supply Regulations

View our leaflet on The Water Supply Fittings Regulations

View our Water Fittings Regulations Enforcement Policy

View our new Notification Form

View our new Notification Form - Guidance Notes