BS EN 1717:2025+A1:2026 PDF

Protection against pollution of water intended for human consumption in potable water installations and general requirements for devices to prevent pollution by backflow

Title (English):

BS EN 1717:2025+A1:2026

Protection against pollution of water intended for human consumption in potable water installations and general requirements for devices to prevent pollution by backflow

Document status:: Active
Format:: Electronic (PDF)
Publication date:: July 31, 2026
ICS:: 13.060.20
SKU:: BS EN 1717:2025+A1:2026

Document language:

enru

Delivery time:1–7 days

Price:377 €

Abstract

1 Scope This document specifies an analysing methodology for protecting potable water in potable water installations within and outside buildings but within premises from the risk of pollution by backflow of non-potable water and gives recommendations on the design, risk analysis, backflow prevention devices and their installation methods (see Figure 1 and Figure 2). This methodology is also intended to be used outside premises for all water systems connected to a potable water distribution system up to and including the point of use (see Figure 3). The product standards for the specific backflow prevention devices or arrangements are intended to be used in conjunction with this document. For the development of new devices or systems, this document is intended to be used as a reference to establish the necessary level of backflow protection.

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BS EN 1717:2025+A1:2026 PDF

Abstract

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