SIST ISO 24516-1:2026/Amd 1:2026
(Amendment)Guidelines for the management of assets of water supply and wastewater systems - Part 1: Drinking water distribution networks - Amendment 1: Performance indicators and requirements for monitoring and review with additional related examples
General Information
- Abstract
- Status
- Published
- Publication Date
- 05-Feb-2026
- Technical Committee
- IOVO - Water supply and waste water engineering
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 29-Jan-2026
- Due Date
- 05-Apr-2026
- Completion Date
- 06-Feb-2026
Buy Documents
ISO 24516-1:2016/Amd 1:2025 - Guidelines for the management of assets of water supply and wastewater systems — Part 1: Drinking water distribution networks — Amendment 1: Performance indicators and requirements for monitoring and review with additional related examples Released:9/16/2025
ISO 24516-1:2016/Amd 1:2025 - Lignes directrices pour la gestion d'actifs des systemes d'eaux usées et d'eau potable — Partie 1: Réseaux de distribution d'eau potable — Amendement 1: Exigences et indicateurs de performance pour la surveillance et la revue, accompagnés d’exemples supplémentaires Released:9/16/2025
Overview
SIST ISO 24516-1:2026/Amd 1:2026 provides essential guidance for the management of assets in drinking water distribution networks. This amendment introduces updated performance indicators and defines specific requirements for the monitoring and review of water supply systems. Additional real-world examples further clarify best practices for ongoing evaluation. Designed for water utilities, regulators, and asset managers, this standard supports continuous improvement in operational efficiency, service quality, and infrastructure longevity within the water and wastewater sector.
Key Topics
Performance Indicators: Incorporates clear, measurable structural, operational, and user-related performance indicators for drinking water distribution networks, such as:
- Number of bursts and interruptions of supply
- Number and duration of interventions
- User complaints (by type and frequency)
- Water leakage rates and non-revenue water reduction
Post-Completion Evaluation: Establishes procedures for evaluating project effectiveness after implementation, including annual or multi-annual performance reviews.
Financial Impact Assessment: Recommends calculating the financial benefits associated with improved performance, such as reduced operating expenses (OPEX) and gains from water loss minimization.
Periodic Reviews & Communication: Outlines the processes for regularly reviewing performance requirements and sharing outcomes with internal and external stakeholders, including management committees and regulatory bodies.
Corrective Actions: Provides a framework for investigating and addressing inefficiencies, involving stakeholder consultations and adjustments in functional requirements, operational strategies, and budgeting.
Reference Values and Inspection Frequency: Introduces tables with reference failure rates for distribution network components (e.g., service connections, mains, valves, hydrants) and recommended inspection intervals to benchmark asset condition and performance.
Applications
The amendment to ISO 24516-1 is directly applicable to organizations involved in the operation, maintenance, and management of drinking water distribution systems. Its practical value includes:
- Asset Management: Enhancing reliability and efficiency in water infrastructure through standardized monitoring and review methods.
- Performance Monitoring: Facilitating evidence-based decision-making by leveraging consistent performance indicators and reference values.
- Regulatory Compliance: Supporting compliance with local and international regulations by aligning performance evaluation processes with best practices.
- Stakeholder Communication: Improving transparency and accountability by formalizing the communication of performance data to both internal decision makers and external stakeholders.
- Continuous Improvement: Providing actionable guidance for identifying causes of underperformance and implementing targeted corrective actions to optimize service delivery and resource allocation.
Related Standards
- ISO 24510: Guidelines for the management of drinking water utilities and the assessment of drinking water services
- EN 805: Water supply - Requirements for systems and components outside buildings
- ISO 24540: Principles for effective and efficient corporate governance of water utilities
- DVGW W 400-3 (A): Technical Rules for Water Supply Systems – Part 3: Operation and Maintenance
By adopting SIST ISO 24516-1:2026/Amd 1:2026, water utilities and asset managers can significantly elevate their performance monitoring processes, ensuring sustainable water distribution services that meet evolving challenges and stakeholder expectations.
Relations
- Effective Date
- 01-Mar-2026
Buy Documents
ISO 24516-1:2016/Amd 1:2025 - Guidelines for the management of assets of water supply and wastewater systems — Part 1: Drinking water distribution networks — Amendment 1: Performance indicators and requirements for monitoring and review with additional related examples Released:9/16/2025
ISO 24516-1:2016/Amd 1:2025 - Lignes directrices pour la gestion d'actifs des systemes d'eaux usées et d'eau potable — Partie 1: Réseaux de distribution d'eau potable — Amendement 1: Exigences et indicateurs de performance pour la surveillance et la revue, accompagnés d’exemples supplémentaires Released:9/16/2025
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Frequently Asked Questions
SIST ISO 24516-1:2026/Amd 1:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Guidelines for the management of assets of water supply and wastewater systems - Part 1: Drinking water distribution networks - Amendment 1: Performance indicators and requirements for monitoring and review with additional related examples". This standard covers: Guidelines for the management of assets of water supply and wastewater systems - Part 1: Drinking water distribution networks - Amendment 1: Performance indicators and requirements for monitoring and review with additional related examples
Guidelines for the management of assets of water supply and wastewater systems - Part 1: Drinking water distribution networks - Amendment 1: Performance indicators and requirements for monitoring and review with additional related examples
SIST ISO 24516-1:2026/Amd 1:2026 is classified under the following ICS (International Classification for Standards) categories: 13.060.01 - Water quality in general; 13.060.20 - Drinking water. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ISO 24516-1:2026/Amd 1:2026 has the following relationships with other standards: It is inter standard links to SIST ISO 24516-1:2026. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST ISO 24516-1:2026/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 24516-1
First edition
Guidelines for the management
2016-11-15
of assets of water supply and
wastewater systems —
AMENDMENT 1
2025-09
Part 1:
Drinking water distribution
networks
AMENDMENT 1: Performance
indicators and requirements for
monitoring and review with additional
related examples
Lignes directrices pour la gestion d'actifs des systèmes d'eaux
usées et d'eau potable —
Partie 1: Réseaux de distribution d'eau potable
AMENDEMENT 1: Exigences et indicateurs de performance
pour la surveillance et la revue, accompagnés d’exemples
supplémentaires
Reference number
ISO 24516-1:2016/Amd.1:2025(en) © ISO 2025
ISO 24516-1:2016/Amd.1:2025(en)
© ISO 2025
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 24516-1:2016/Amd.1:2025(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 documents 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.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
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 224, Drinking water, wastewater and
stormwater systems and services.
A list of all parts in the ISO 24516 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 24516-1:2016/Amd.1:2025(en)
Guidelines for the management of assets of water supply and
wastewater systems —
Part 1:
Drinking water distribution networks
AMENDMENT 1: Performance indicators and requirements for
monitoring and review with additional related examples
Clause 3, Terms and definitions
Remove the following source references from the terminological entries asset (3.1), asset management (3.2),
maintenance (3.12) and service (3.19):
[SOURCE: ISO 24510:2007, 2.4]
[SOURCE: ISO 24510:2007, 2.5]
[SOURCE: ISO 24510:2007, 2.19]
[SOURCE: ISO 24510:2007, 2.44]
Clause 8.4
Add the following paragraphs at the end of the subclause:
After planning and execu
...
Norme
internationale
ISO 24516-1
Première édition
Lignes directrices pour la gestion
2016-11-15
d'actifs des systèmes d'eaux usées
et d'eau potable —
AMENDEMENT 1
2025-09
Partie 1:
Réseaux de distribution d'eau potable
AMENDEMENT 1: Exigences et
indicateurs de performance pour la
surveillance et la revue, accompagnés
d’exemples supplémentaires
Guidelines for the management of assets of water supply and
wastewater systems —
Part 1: Drinking water distribution networks
AMENDMENT 1: Performance indicators and requirements for
monitoring and review with additional related examples
Numéro de référence
ISO 24516-1:2016/Amd.1:2025(fr) © ISO 2025
ISO 24516-1:2016/Amd.1:2025(fr)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2025
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii
ISO 24516-1:2016/Amd.1:2025(fr)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes nationaux
de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est en général
confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l’ISO participent également aux travaux. L’ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient en particulier de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document
a été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2
(voir www.iso.org/directives).
L’ISO attire l’attention sur le fait que la mise en application du présent document peut entraîner l’utilisation
d’un ou de plusieurs brevets. L’ISO ne prend pas position quant à la preuve, à la validité et à l’applicabilité de
tout droit de brevet revendiqué à cet égard. À la date de publication du présent document, l’ISO n’avait pas
reçu notification qu’un ou plusieurs brevets pouvaient être nécessaires à sa mise en application. Toutefois,
il y a lieu d’avertir les responsables de la mise en application du présent document que des informations
plus récentes sont susceptibles de figurer dans la base de données de brevets, disponible à l’adresse
www.iso.org/brevets. L’ISO ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits de
propriété et averti de leur existence.
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l’ISO liés à l’évaluation de la conformité, ou pour toute information au sujet de l’adhésion de
l’ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles techniques au
commerce (OTC), voir le lien suivant: www.iso.org/avant-propos.html.
Le présent document a été élaboré par le comité technique ISO/TC 224, Systèmes et services relatifs à l’eau
potable, à l’assainissement et à la gestion des eaux pluviales.
Une liste de toutes les parties de la série ISO 24516 se trouve sur le site web de l’ISO.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes se
trouve à l’adresse www.iso.org/fr/members.html.
iii
ISO 24516-1:2016/Amd.1:2025(fr)
Lignes directrices pour la gestion d'actifs des systèmes d'eaux
usées et d'eau potable —
Partie 1:
Réseaux de distribution d'eau potable
AMENDEMENT 1: Exigences et indicateurs de performance
pour la surveillance et la revue, accompagnés d’exemples
supplémentaires
Article 3, Termes et définitions
Supprimer les références des documents ci-après dans les articles terminologiques patrimoine (3.1), gestion
de patrimoine (3.2), maintenance (3.12) et service (3.19):
[SOURCE: ISO 24510:2007, 2.4]
[SOURCE: ISO 24510:2007, 2.5]
[SOURCE: ISO 24510:2007, 2.19]
[SOURCE: ISO 24510:2007, 2.44]
Article 8.4
Ajouter les alinéas suivants à la fin du paragraphe:
«Après planification et exécution des travaux, il convient de procéder, une fois ces derniers achevés, à une
évaluation afin de mesurer l’efficacité des projets réalisés et leu
...
SLOVENSKI STANDARD
01-marec-2026
Smernice za vodenje sredstev sistemov oskrbe z vodo in odvajanja odpadnih voda
- 1. del: Distribucijska omrežja pitne vode - Dopolnilo 1: Kazalniki uspešnosti in
zahteve za spremljanje in pregled z dodatnimi povezanimi primeri
Guidelines for the management of assets of water supply and wastewater systems - Part
1: Drinking water distribution networks - Amendment 1: Performance indicators and
requirements for monitoring and review with additional related examples
Lignes directrices pour la gestion d'actifs des systèmes d'eaux usées et d'eau potable -
Partie 1: Réseaux de distribution d'eau potable - Amendement 1: Exigences et
indicateurs de performance pour la surveillance et la revue, accompagnés d’exemples
supplémentaires
Ta slovenski standard je istoveten z: ISO 24516-1:2016/Amd 1:2025
ICS:
13.060.20 Pitna voda Drinking water
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
International
Standard
ISO 24516-1
First edition
Guidelines for the management
2016-11-15
of assets of water supply and
wastewater systems —
AMENDMENT 1
2025-09
Part 1:
Drinking water distribution
networks
AMENDMENT 1: Performance
indicators and requirements for
monitoring and review with additional
related examples
Lignes directrices pour la gestion d'actifs des systèmes d'eaux
usées et d'eau potable —
Partie 1: Réseaux de distribution d'eau potable
AMENDEMENT 1: Exigences et indicateurs de performance
pour la surveillance et la revue, accompagnés d’exemples
supplémentaires
Reference number
ISO 24516-1:2016/Amd.1:2025(en) © ISO 2025
ISO 24516-1:2016/Amd.1:2025(en)
© ISO 2025
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 24516-1:2016/Amd.1:2025(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 documents 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.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
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 224, Drinking water, wastewater and
stormwater systems and services.
A list of all parts in the ISO 24516 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
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