Guidelines for drinking-water quality, 4th edition, incorporating the 1st addendum
Overview
The fourth edition of the World Health Organization’s (WHO) Guidelines for drinking-water quality (GDWQ) builds on over 50 years of guidance by WHO on drinking-water quality, which has formed an authoritative basis for the setting of national regulations and standards for water safety in support of public health.
It is the product of significant revisions to clarify and elaborate on ways of implementing its recommendations of contextual hazard identification and risk management, through the establishment of health-based targets, catchment-to-consumer water safety plans and independent surveillance.
This first addendum updates the fourth edition. Updates reflect new evidence and further, provides additional explanations to support better understanding and application of the guidance.
More information
View the detailed list of changes in the first addendum to the fourth edition of the GDWQ
View the list of chemical hazards considered in the WHO Guidelines for Drinking-water Quality
Previous editions of the Guidelines for drinking-water quality (including Russian, Chinese and Japanese versions of the fourth edition)