ISO 24511:2024

Activities relating to drinking water and wastewater services — Guidelines for the management of wastewater utilities and for the assessment of wastewater services

This document provides guidelines for the management of wastewater utilities and the assessment of wastewater services. This document is applicable to publicly and privately owned and operated wastewater utilities but does not favour any particular ownership or operational model. NOTE 1 Wastewater is always generated when water is used or consumed. Accordingly, sources of wastewater can be residential, industrial, commercial or institutional. Collected storm water or (melted) snow can also be considered as wastewater, as it often carries contaminants and pathogens picked up from air or ground surfaces on its way to a collection system. In certain circumstances, especially in undeveloped areas, sanitary waste is collected in an undiluted form. This document addresses wastewater systems in their entirety and is applicable to systems at any level of development (e.g. pit latrines, on-site systems, networks, treatment facilities). The following are within the scope of this document: — the definition of a language common to different stakeholders; — objectives for the wastewater utility; — guidelines for the management of wastewater utilities; — service assessment criteria and related examples of performance indicators, all without setting any target values or thresholds. The following are outside the scope of this document: — methods of design and construction of wastewater systems; — regulation of the management structure and the methodology of wastewater service activities of operation and management; — regulation of the content of contracts or subcontracts; — topics related to the systems inside buildings, between the point-of-discharge and the point-of-collection.

Activités relatives aux services de l'eau potable et de l'assainissement — Lignes directrices pour la gestion des services publics d'assainissement et pour l'évaluation des services fournis

Le présent document fournit des lignes directrices pour la gestion des services publics d'assainissement et l'évaluation des services fournis. Le présent document est applicable à tous les services publics de l'eau, qu'ils soient détenus et exploités par le secteur public ou privé, mais il ne favorise aucun modèle de propriété ou de fonctionnement. NOTE 1 L'utilisation ou la consommation d'eau engendre toujours des eaux usées. Par conséquent, les eaux usées peuvent être d'origine résidentielle, industrielle, commerciale ou institutionnelle. Les eaux pluviales ou la neige (fondue) collectées peuvent également être considérées comme des eaux usées, car elles véhiculent souvent des contaminants et des agents pathogènes provenant de l'air ou du sol et ramassés pendant le trajet vers un système de collecte. Il arrive, notamment dans les zones non développées, que les matières fécales soient collectées sous forme non diluée. Le présent document concerne les systèmes d'assainissement dans leur totalité et s'applique à des systèmes, quel que soit leur niveau de développement (par exemple les latrines à fosse, les installations autonomes, les réseaux de distribution et les installations de traitement). Les éléments suivants relèvent du domaine d'application du présent document: — la définition d'un langage commun aux différentes parties intéressées; — les objectifs du service public d'assainissement; — des lignes directrices pour la gestion des services publics d'assainissement; — des critères d'évaluation du service et les exemples d'indicateurs de performance correspondants, sans fixer de valeurs ou de seuils cibles. Les éléments suivants ne relèvent pas du domaine d'application du présent document: — les méthodes de conception et de construction de systèmes d'assainissement; — la réglementation des structures de management et la méthodologie des activités de service d'assainissement relatives à l'exploitation et à la gestion; — la réglementation du contenu des contrats ou des contrats de sous-traitance; — les questions liées aux systèmes intérieurs aux bâtiments entre le point de rejet et le point de collecte.

General Information

• Status: Published
• Publication Date: 18-Feb-2024
• ICS: 03.080.30 - Services for consumers
• ICS: 13.060.30 - Sewage water
• ICS: 93.030 - External sewage systems
• Technical Committee: ISO/TC 224 - Drinking water, wastewater and stormwater systems and services
• Drafting Committee: ISO/TC 224 - Drinking water, wastewater and stormwater systems and services
• Current Stage: 6060 - International Standard published
• Start Date: 19-Feb-2024
• Due Date: 29-Jan-2024
• Completion Date: 19-Feb-2024

Relations

• Revises: ISO 24511:2007 - Activities relating to drinking water and wastewater services — Guidelines for the management of wastewater utilities and for the assessment of wastewater services
• Effective Date: 06-Jun-2022

Standards Content (Sample)

International
Standard
ISO 24511
Second edition
Activities relating to drinking
2024-02
water and wastewater services —
Guidelines for the management
of wastewater utilities and for the
assessment of wastewater services
Activités relatives aux services de l'eau potable et de
l'assainissement — Lignes directrices pour la gestion des services
publics d'assainissement et pour l'évaluation des services fournis
Reference number
ISO 24511:2024(en) © ISO 2024

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ISO 24511:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland

© ISO 2024 – All rights reserved
ii

---------------------- Page: 2 ----------------------
ISO 24511:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Components of wastewater systems . . 4
4.1 General .4
4.2 Types of wastewater systems .5
4.3 Centralized systems.5
4.3.1 Wastewater source .5
4.3.2 Transport from source to treatment .5
4.3.3 Treatment .6
4.3.4 Storage, transport and distribution .7
4.3.5 Disposal of residues .7
4.4 On-site-systems .7
4.4.1 Wastewater source .7
4.4.2 Collection and transport .7
4.4.3 Treatment .
...

Norme
internationale
ISO 24511
Deuxième édition
Activités relatives aux
2024-02
services de l'eau potable et
de l'assainissement — Lignes
directrices pour la gestion des
services publics d'assainissement
et pour l'évaluation des services
fournis
Activities relating to drinking water and wastewater services —
Guidelines for the management of wastewater utilities and for the
assessment of wastewater services
Numéro de référence
ISO 24511:2024(fr) © ISO 2024

---------------------- Page: 1 ----------------------
ISO 24511:2024(fr)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2024
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.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse

© ISO 2024 – Tous droits réservés
ii

---------------------- Page: 2 ----------------------
ISO 24511:2024(fr)
Sommaire Page
Avant-propos .v
Introduction .vi
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes et définitions . 2
4 Éléments constitutifs des systèmes d'assainissement . 5
4.1 Généralités .5
4.2 Types de systèmes d'assainissement .5
4.3 Systèmes centralisés .5
4.3.1 Source d'eaux usées .5
4.3.2 Transport de la source au traitement .6
4.3.3 Traitement .6
4.3.4 Stockage, transport et distribution .7
4.3.5 Évacuation des résidus .7
4.4 Installations autonomes .8
4.4.1 Source d'eaux usées .8
4.4.2 Collecte et transport .8
4.4.3 Traitement .
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 24511
ISO/TC 224
Activities relating to drinking water
Secretariat: AFNOR
and wastewater services — Guidelines
Voting begins on:
2023-12-06 for the management of wastewater
utilities and for the assessment of
Voting terminates on:
2024-01-31
wastewater services
Activités relatives aux services de l'eau potable et de
l'assainissement — Lignes directrices pour le management des
services publics de l'assainissement et pour l'évaluation des services
fournis
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 24511:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/FDIS 24511:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 24511
ISO/TC 224
Activities relating to drinking water
Secretariat: AFNOR
and wastewater services — Guidelines
Voting begins on:
for the management of wastewater
utilities and for the assessment of
Voting terminates on:
wastewater services
Activités relatives aux services de l'eau potable et de
l'assainissement — Lignes directrices pour le management des
services publics de l'assainissement et pour l'évaluation des services
fournis
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
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.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 24511:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 2 ----------------------
ISO/FDIS 24511:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Components of wastewater systems . .4
4.1 General . 4
4.2 Types of wastewater systems . 5
4.3 Centralized systems. 5
4.3.1 Wastewater source .
...

ISO/FDIS 24511:2023(E)
ISO/TC 224
Date: 2023-09-18
Secretariat: AFNOR
Date: 2023-11-22
Activities relating to drinking water and wastewater services —
Guidelines for the management of wastewater utilities and for the
assessment of wastewater services
Activités relatives aux services de l'eau potable et de l'assainissement — Lignes directrices pour le
management des services publics de l'assainissement et pour l'évaluation des services fournis
FDIS stage

---------------------- Page: 1 ----------------------
ISO/FDIS 24511:2023(E)
© ISO 2023
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
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ii © ISO 2023 – All rights reserved
 © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/FDIS 24511:2023(E)
Contents
Foreword .vi i
Introduction . viii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Components of wastewater systems . 5
4.1 General . 5
4.2 Types of wastewater systems . 6
4.3 Centralized systems . 6
4.3.1 Wastewater source . 6
4.3.2 Transport from source to treatment . 6
4.3.3 Treatment . 7
4.3.4 Storage, transport and distribution . 8
4.3.5 Disposal of residues . 8
4.4 On-site-systems . 8
4.4.1 Wastewater source . 8
4.4.2 Collection and transport. 8
4.4.3 Treatment . 9
4.4.4 Storage, transport and distribution . 9
4.5 Disposal or reuse of residues . 10
5 Objectives for the wastewater utilit
...