This document specifies requirements for and gives recommendations on the design, installation, alteration, testing, maintenance and operation of installations inside buildings conveying water intended for human consumption (hereafter referred to as potable water installations) within buildings and, for certain purposes, pipework outside buildings but within the premises (see Figure 1).
It covers the system of pipelines, fittings and connected appliances installed for supplying potable water from the delivery point to the point of use.
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