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BS EN 806-1:2000
Specifications for installations inside buildings conveying water for human consumption. General (British Standard)
This European standard specifies requirements for and gives recommendations on the design, installation, alteration, testing, maintenance and operation of drinking water installations within buildings and for certain purposes pipework outside buildings but within the premises. It is applicable to the system of pipes, fittings and connected appliances installed for supplying drinking water.
British Standards Institution [bsi]