BS ISO 24521:2016

Activities relating to drinking water and wastewater services. Guidelines for the management of basic on-site domestic wastewater services. | Status: Superseded, Withdrawn

1 Scope This International Standard provides guidance for the management of basic on-site domestic wastewater services, using appropriate technologies in their entirety at any level of development. This International Standard 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 this International Standard:

• — 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.

This International Standard is applicable to both publicly and privately operated basic on-site domestic wastewater (black and grey water) services, for one or more dwellings.

NOTE 1 Management of on-site domestic wastewater, especially in rural areas and areas under development, is sometimes provided by the owners of the premises where wastewater is generated. In such cases, the owners of the premises carry out the management of domestic wastewater by themselves. In this International Standard, the term “services” includes “self-services” provided by the owners of the premises.

NOTE 2 Especially in undeveloped areas, domestic wastewater is collected in an undiluted form (i.e. sanitary waste). Sources of sanitary waste/wastewater in this International Standard are residential, excluding storm water runoff.

NOTE 3 Annex A contains a table of correspondence between equivalent terms in English, French and Spanish.

NOTE 4 Annex B gives some examples of schematics of basic on-site domestic wastewater systems and components.