ISO 24525:2022

Drinking water, wastewater and stormwater systems and services — Operation and maintenance of on-site domestic wastewater services

This document provides guidance and specifications for the operation and maintenance (O&M) of on-site domestic wastewater services, using appropriate technologies at any level of development. This document supplements and is intended to be used in conjunction with ISO 24513 and ISO 24521.

This document provides assistance to relevant authorities, training organizations, certification bodies and other responsible entities for the development of regulations, plans and manuals, as well as information and training materials addressed to operators and users of on-site domestic wastewater systems (ODWS).

This document is applicable to both publicly and privately operated on-site domestic wastewater (blackwater and greywater) systems for one or more dwellings or other premises where wastewater is generated.

The scope of this document includes the following:

—    O&M of ODWS from the operator’s perspective;

—    O&M of ODWS from the user’s perspective;

—    training and information aspects;

—    environmental, health and safety issues.

The following are outside the scope of this document:

—    detailed design of ODWS;