ISO 20426:2018

Guidelines for health risk assessment and management for non-potable water reuse

Publication date:   May 31, 2018

General information

90.93 Standard confirmed   Oct 4, 2023


ISO/TC 282/SC 3 Risk and performance evaluation of water reuse systems

International Standard

13.060.01   Water quality in general | 13.060.45   Examination of water in general



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This document aims to serve as technical guidelines for the assessment and management of the health risks associated with pathogens contained in reclaimed water, which are expected to be caused by the use of reclaimed water, and/or by the production, storage, and transportation of reclaimed water.
This document is applicable to the use of reclaimed water made from any source water (i.e. raw sanitary sewage; treated municipal wastewater; industrial wastewater; stormwater potentially influenced by sewage) and for non-potable water reuse.
NOTE The approach described in this document can be applied to chemical contaminant, if applicable.

Life cycle


ISO 20426:2018
90.93 Standard confirmed
Oct 4, 2023