NF ISO 24511
Activities relating to drinking water and wastewater services - Guidelines for the management of wastewater utilities and for the assessment of wastewater services
ISO 24511:2007 provides guidelines for the management of wastewater utilities and for the assessment of wastewater services. ISO 24511:2007 is applicable to publicly and privately owned and operated wastewater utilities, but does not favour any particular ownership or operational model. ISO 24511:2007 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 ISO 24511:2007: 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.
ISO 24511:2007 provides guidelines for the management of wastewater utilities and for the assessment of wastewater services.
ISO 24511:2007 is applicable to publicly and privately owned and operated wastewater utilities, but does not favour any particular ownership or operational model.
ISO 24511:2007 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 ISO 24511:2007:
- 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.
<p class="MsoBodyText"><span lang="EN-GB">This document provides guidelines for the management of wastewater utilities and the assessment of wastewater services.</span></p> <p class="MsoBodyText"><span lang="EN-GB">This document is applicable to publicly and privately owned and operated wastewater utilities but does not favour any particular ownership or operational model.</span></p> <p class="Note"><span lang="EN-GB">NOTE 1<span style="mso-tab-count: 1;"> </span>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.</span></p> <p class="MsoBodyText"><span lang="EN-GB">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).</span></p> <p class="MsoBodyText"><span lang="EN-GB">The following are within the scope of this document:</span></p> <p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">the definition of a language common to different stakeholders;</span></p> <p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">objectives for the wastewater utility;</span></p> <p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">guidelines for the management of wastewater utilities;</span></p> <p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">service assessment criteria and related examples of performance indicators, all without setting any target values or thresholds.</span></p> <p class="MsoBodyText"><span lang="EN-GB">The following are outside the scope of this document:</span></p> <p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">methods of design and construction of wastewater systems;</span></p> <p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">regulation of the management structure and the methodology of wastewater service activities of operation and management;</span></p> <p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">regulation of the content of contracts or subcontracts;</span></p> <p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">topics related to the systems inside buildings, between the point-of-discharge and the point-of-collection.</span></p>
- Avant-proposv
- Introductionvi
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1 Domaine d'application1
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2 Termes et définitions2
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3 Éléments constitutifs des systèmes d'assainissement10
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3.1 Généralités10
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3.2 Types de systèmes d'assainissement10
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3.3 Systèmes centralisés/décentralisés11
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3.4 Systèmes autonomes12
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3.5 Évacuation/réutilisation des résidus12
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4 Objectifs des services publics de l'assainissement13
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4.1 Généralités13
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4.2 Protection de la santé publique15
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4.3 Satisfaction des besoins et des attentes de l'usager15
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4.4 Fourniture des services dans les situations normales et d'urgence15
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4.5 Durabilité du service public de l'assainissement15
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4.6 Promotion d'un développement durable de la collectivité15
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4.7 Protection de l'environnement16
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5 Composantes du management d'un service public de l'assainissement17
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5.1 Généralités17
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5.2 Activités et processus de management17
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5.3 Gestion des ressources17
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5.4 Gestion du patrimoine17
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5.5 Gestion des relations avec l'usager18
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5.6 Gestion de l'information18
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5.7 Management environnemental18
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5.8 Gestion des risques19
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6 Lignes directrices pour le management des services publics de l'assainissement19
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6.1 Généralités19
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6.2 Organisation19
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6.3 Planification et construction21
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6.4 Exploitation et maintenance21
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7 Évaluation des services de l'eau24
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7.1 Généralités24
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7.2 Politique d'évaluation25
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7.3 Objet et domaine d'application de l'évaluation25
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7.4 Parties impliquées dans l'évaluation26
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7.5 Méthodologie d'évaluation26
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7.6 Critères d'évaluation du service26
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7.7 Ressources nécessaires à la conduite de l'évaluation27
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7.8 Production de résultats et recommandations pour l'utilisation des résultats27
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8 Indicateurs de performance27
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8.1 Généralités27
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8.2 Systèmes d'indicateurs de performance27
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8.3 Qualité de l'information29
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8.4 Exemple d'indicateur de performance29
- Annexe A (informative) Tableaux des termes anglais, français et espagnols31
- Annexe B (informative) Schémas de systèmes d'assainissement36
- Annexe C (informative) Actions possibles pour atteindre les objectifs du service d'assainissement39
- Annexe D (informative) Actions possibles liées au management du service public de l'assainissement44
- Annexe E (informative) Exemples de critères d'évaluation du service associés aux objectifs du service public de l'assainissement, d'indicateurs de performance associés aux critères d'évaluation et de critères d'évaluation du service associés aux fonctions du service47
- Annexe F (informative) Systèmes d'indicateurs de performance - Exemple de procédure d'attribution d'un niveau de confiance58
- Bibliographie60
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