NF ISO 24511, P15-921 (03/2024)

This document provides guidelines for the management of public sanitation services and the evaluation of the services provided. This document is applicable to all water utilities, whether publicly or privately owned and operated, but does not favor any model of ownership or operation. NOTE 1 The use or consumption of water always generates wastewater. Therefore, wastewater can be of residential, industrial, commercial or institutional origin. Collected stormwater or (melted) snow may also be considered wastewater, as it often carries contaminants and pathogens from the air or soil and picked up during the journey to a collection system. It happens, especially in undeveloped areas, that feces are collected in undiluted form. This document concerns sanitation systems as a whole and applies to systems regardless of their level of development (e.g. pit latrines, stand-alone facilities, distribution networks and treatment facilities). The following elements fall within the scope of this document: — the definition of a common language for the different interested parties; — the objectives of the public sanitation service; — guidelines for the management of public sanitation services; — criteria for evaluating the service and examples of corresponding performance indicators, without setting target values or thresholds. The following elements are outside the scope of this document: — methods of design and construction of sanitation systems; — the regulation of management structures and methodology of sanitation service activities relating to operation and management; — regulation of the content of contracts or subcontracting contracts; — questions related to systems inside buildings between the discharge point and the collection point.
(Automatic translation from French)