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

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

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1   Scope

This International Standard provides guidelines for the management of wastewater utilities and for the assessment of wastewaterservices.
This International Standard 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 International Standard 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 International Standard:
  • — 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 performanceindicators, all without setting any target values or thresholds.
The following are outside the scope of this International Standard:
  • — methods of design and construction of wastewater systems;
  • — regulation of the management structure and the methodology of wastewaterservice 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.

NOTE 2 This International Standard, ISO 24510 and ISO 24512 comprise a series of standards addressing water services. It is therefore advisable to use these three International Standards in conjunction with each other.

NOTE 3 The list of terms and definitions in Clause 2 is common to this International Standard, ISO 24510 and ISO 24512.

NOTE 4 Annex A contains three tables of correspondence between equivalent terms in English, French and Spanish.