ISO 24521:2016

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"ISO 24521:2016 - Activities relating to drinking water and wastewater services — Guidelines for the management of basic on-site domestic wastewater services."

IWA 34:2021 provides guidelines for the implementation of water reuse in the context of a circular economy. A circular economy is an economic model aimed at minimizing waste, making the most of resources, and promoting sustainability. In this context, it focuses on the reuse of water to improve resource efficiency and contribute to sustainability by reducing the pressure on freshwater resources, enhancing water recycling, and reducing wastewater generation.