scope:

This document provides guidelines for benefit evaluations for reclaimed water for applications with varied water quality requirements for beneficial use in urban areas.

This document is applicable to practitioners and authorities to assist water reuse planning, design, operation and management. Implementation of principles of benefit evaluations will create thorough, comprehensive, systematic, and sustainable reclaimed water use.

This document addresses reclaimed water use benefits in whole and is applicable to any aspect of benefits (e.g. resource benefit, ecological and environmental benefit, social benefit and economic benefit).

This document provides:

- standard terms and definitions;

- evaluation indicators, procedures and examples of reclaimed water use benefits, including resource, ecological and environmental, social, economic and other benefits;

Design parameters and regulatory values of different reclaimed water uses as well as risk or safety evaluation of reclaimed water use are out of scope of this document.