The Water Supply (Water Fittings) Regulations 1999 set out the installation requirements for plumbing systems. It works the same way as building regulations set out the requirements for buildings.
There’s been a long history in regulating plumbing systems in homes and businesses in the UK which is done to protect public health by safeguarding drinking water through the use of water company's Water Supply Byelaws.
Following a recent review the Government introduced the Water Supply (Water Fittings) Regulations 1999, to prevent inefficient use of water, the waste, misuse, undue consumption, incorrect measurement of it and, most importantly, to prevent contamination of drinking water supplies.
These regulations are national requirements for the design, installation and maintenance of plumbing systems, water fittings and water-using appliances and supersede the previous Water Supply Byelaws that were written by each water company.
The Water Regulations Advisory Service (WRAS) provide national guidance on the regulations for water companies and their customers. Water Undertakers are responsible for the enforcement of the Regulations within their water supply areas.
Please see below for further information: