General Information

Abstract

Status
Published
Publication Date
22-Sep-2026
Current Stage
6060 - International Standard published
Start Date
23-Sep-2026
Due Date
17-Jun-2027
Completion Date
23-Sep-2026

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ISO 20712-3:2024/Amd 1:2026 - Water safety signs and beach safety flags — Part 3: Guidance for use — Amendment 1: UV index-based warning and information system

Release Date:23-Sep-2026
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Overview

ISO 20712-3:2024/Amd 1:2026 is an amendment to ISO 20712-3, Water safety signs and beach safety flags - Part 3: Guidance for use. This update introduces a UV index-based warning and information system for aquatic environments, strengthening beach safety signage and public awareness of ultraviolet radiation risks.

The amendment adds guidance for displaying UV risk warnings and recommended protective measures at key access points such as main entrances and pedestrian entrances to beaches and other aquatic environments. It supports clearer communication of sun safety information through standardized signs, digital displays, and QR code-based references.

Key Topics

  • UV risk warning signs

    • Introduces signs for warning about ultraviolet (UV) radiation
    • Allows integration into existing beach safety signs and access signage
  • Protective measures

    • Recommends a three-part colour-coded scale for daily UV risk
    • Uses risk levels I, II, and III to simplify public communication
  • Practical display options

    • Daily UV risk may be shown through:
      • Digital displays
      • Changeable physical signs
      • Internet sources via QR code
  • Standardized visual references

    • Includes the warning sign for optical radiation (ISO 7010-W027) with supplementary UV text
    • Uses colours aligned with ISO 3864-4 requirements for safety sign design
  • Public guidance

    • Level I: No protection required
    • Level II: Protection required
    • Level III: Stay indoors

This amendment helps align water safety signs, beach safety flags, and UV index warning systems with a more consistent international approach.

Applications

ISO 20712-3:2024/Amd 1:2026 is relevant for organizations responsible for coastal safety, beach management, public recreation areas, and aquatic facility signage. It is especially useful where UV exposure awareness is part of seasonal safety communication.

Typical applications include:

  • Beach entrances and access points
  • Aquatic recreation areas
  • Public safety signage programs
  • Tourism and local authority beach management
  • Sun protection awareness campaigns

The amendment supports practical decision-making by helping users understand when sun protection measures may be needed based on the daily UV index.

Related Standards

This amendment is closely connected to several international references and related standards, including:

  • ISO 20712-3 - Water safety signs and beach safety flags - Part 3: Guidance for use
  • ISO 7010-W027 - Optical radiation warning sign
  • ISO 3864-4 - Safety colours and safety signs, including colorimetric and photometric requirements
  • WHO Global Solar UV Index guidance - Background on UV index ranges and protection recommendations

Together, these references support a more effective UV index warning system, improved beach safety signage, and better public understanding of UV radiation risk.

Relations

Effective Date
22-Jun-2024

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Standard

ISO 20712-3:2024/Amd 1:2026 - Water safety signs and beach safety flags — Part 3: Guidance for use — Amendment 1: UV index-based warning and information system

Release Date:23-Sep-2026
English language (5 pages)
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Frequently Asked Questions

ISO 20712-3:2024/Amd 1:2026 is a standard published by the International Organization for Standardization (ISO). Its full title is "Water safety signs and beach safety flags — Part 3: Guidance for use — Amendment 1: UV index-based warning and information system". This standard covers: Water safety signs and beach safety flags — Part 3: Guidance for use — Amendment 1: UV index-based warning and information system

Water safety signs and beach safety flags — Part 3: Guidance for use — Amendment 1: UV index-based warning and information system

ISO 20712-3:2024/Amd 1:2026 is classified under the following ICS (International Classification for Standards) categories: 01.080.10 - Public information symbols. Signs. Plates. Labels. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 20712-3:2024/Amd 1:2026 has the following relationships with other standards: It is inter standard links to ISO 20712-3:2024. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ISO 20712-3:2024/Amd 1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


International
Standard
ISO 20712-3
Fourth edition
Water safety signs and beach safety
2024-05
flags —
AMENDMENT 1
Part 3:
2026-09
Guidance for use
AMENDMENT 1: UV index-based
warning and information system
Reference number
ISO 20712-3:2024/Amd.1:2026(en) © ISO 2026

ISO 20712-3:2024/Amd.1:2026(en)
© ISO 2026
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 20712-3:2024/Amd.1:2026(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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related to conformity assessment, as well as information about ISO’s adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 145, Graphical symbols, Subcommittee SC 2,
Safety identification, signs, shapes, symbols and colours.
A list of all parts in the ISO 20712 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iii
ISO 20712-3:2024/Amd.1:2026(en)
Water safety signs and beach safety flags —
Part 3:
Guidance for use
AMENDMENT 1: UV index-based warning and information system

7.3.5
Add the following new subclause after 7.3.4, before Annex A.
7.3.5  Signs for warning of UV risk and recommended protective measures
Signs for warning of risk from ultraviolet (UV) radiation and recommended protective measures should be
placed at every main entrance to an aquatic environment and should be used at pedestrian e
...