scope:

ISO 24521:2016 provides guidance for the management of basic on-site domestic wastewater services, using appropriate technologies in their entirety at any level of development. ISO 24521:2016 supplements and is intended to be used in conjunction with ISO 24511. It includes the following: � guidelines for the management of basic on-site domestic wastewater services from the operator's perspective, including maintenance techniques, training of personnel and risk considerations; � guidelines for the management of basic on-site domestic wastewater services from the perspective of users; � guidance on the design and construction of basic on-site domestic wastewater systems; � guidance on planning, operation and maintenance, and health and safety issues. The following are outside the scope of ISO 24521:2016: � limits of acceptability for wastewater discharged into a receiving body; � analytical methods; � the management structure of sanitary waste/wastewater service activities of operation and management; � the content of contracts or subcontracts. ISO 24521:2016 is applicable to both publicly and privately operated basic on-site domestic wastewater (black and grey water) services, for one or more dwellings.