The Water Efficient Product Labelling Scheme is a voluntary Scheme run by the industry association The Bathroom Manufacturers Association (BMA). It is open to all companies who manufacture or sell product in the United Kingdom that meets the criteria for water efficiency products as defined by technical experts within the United Kingdom bathroom Industry.  The purpose of the scheme is to encourage the installation of water efficient products within the domestic and commercial markets, maintaining individual choice at the same time as reducing the amount of potable water used.  An annual audit of registered products and their supporting product literature will be carried out by a third party certification body who will undertake to test for compliance of the Scheme a randomly selected 5% of registered products across the different product criteria groups.