ISO 23056:2020 PDF

Water reuse in urban areas — Guidelines for decentralized/onsite water reuse system — Design principles of a decentralized/onsite system

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Title (English):

ISO 23056:2020

Water reuse in urban areas — Guidelines for decentralized/onsite water reuse system — Design principles of a decentralized/onsite system

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 16
Publication date:: September 7, 2020
Edition:: ISO IS 23056 edition 1 version 1
ICS:: 13.060.01

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Description (English):

This document provides guidelines for the planning, design principles and considerations of a decentralized/onsite water reuse system and water reuse applications in urban areas. This document is applicable to practitioners and authorities who intend to implement principles and decisions on decentralized water reuse in a safe, reliable and sustainable manner. This document addresses decentralized/onsite water reuse systems in their entirety and is applicable to any water reclamation system component (e.g. source water collection, treatment, storage, distribution, operation and maintenance and monitoring). This document provides: — standard terms and definitions; — description of system components and possible models of a decentralized/onsite water reuse system; — design principles of a decentralized/onsite water reuse system; — common assessment criteria and related examples of water quality indicators, all without setting any target values or thresholds; — specific aspects for consideration and emergency response. Design parameters and regulatory values of a decentralized/onsite water reuse system are out of the scope of this document.

Technical details

Technical committee: ISO/TC 282/SC 2 - Water reuse in urban areas
SKU: ISO 23056:2020

Abstract

Overview

ISO 23056:2020 - "Water reuse in urban areas - Guidelines for decentralized/onsite water reuse system - Design principles of a decentralized/onsite system" provides high-level, practical guidance for planning and designing decentralized (onsite) water reuse systems in urban contexts. The standard covers the whole lifecycle of a decentralized/onsite system - from source water collection through treatment, storage, distribution, operation and maintenance, to monitoring and emergency response - with emphasis on safe, reliable and sustainable implementation. Note: specific design parameters and regulatory target values are out of scope.

Key topics

Scope and terminology: Includes standard terms and definitions aligned with ISO 20670 (Water reuse - Vocabulary).
System models: Describes common decentralized models - onsite, cluster, and community systems - and guidance on scale and siting.
Planning and site assessment: Internal planning, site selection, population density, land use integration, hydraulic and pollutant loading considerations.
Source water and collection: Options for source separation (e.g., greywater), collection systems and pre-treatment considerations.
Treatment processes: Overview of natural, aerobic/anaerobic, combined, disinfection and advanced treatment approaches (conceptual, not prescriptive).
Storage & delivery: Guidance on storage design and distribution for fit‑for‑purpose end uses.
Monitoring & assessment: Common assessment criteria and examples of water quality indicators - provided without specifying thresholds - to support performance verification.
Risk management & emergency response: Risk-based planning, failure modes, contingency measures and emergency response planning.
Operation, maintenance & public engagement: Emphasis on operability, residuals handling (sludge, screenings), owner/operator capacity and community outreach.

Practical applications and users

ISO 23056:2020 is intended for:

Municipal authorities and regulators considering decentralized reuse options
Water and wastewater engineers, urban planners and environmental consultants
Building designers, facility managers and community associations
Developers and utilities evaluating cluster or community reuse schemes

Typical applications include non-potable reuse in urban areas such as restricted/unrestricted irrigation, toilet and urinal flushing, industrial uses, firefighting, street cleaning, ornamental water features, car washing and groundwater/surface water replenishment. The standard helps stakeholders select appropriate system scale and components, manage risks, and design for operability and public acceptance.

Related standards

ISO 20670 - Water reuse: Vocabulary (referenced for terms and definitions)
Prepared by ISO/TC 282 (Water reuse) - consult national standards bodies for implementation guidance.

Keywords: ISO 23056:2020, decentralized water reuse, onsite water reuse system, water reuse in urban areas, design principles, planning, treatment, monitoring, risk management.

Related standards

Mentioned in the description and other ISO standards

Abstract

Overview

Key topics

Scope and terminology: Includes standard terms and definitions aligned with ISO 20670 (Water reuse - Vocabulary).
System models: Describes common decentralized models - onsite, cluster, and community systems - and guidance on scale and siting.
Planning and site assessment: Internal planning, site selection, population density, land use integration, hydraulic and pollutant loading considerations.
Source water and collection: Options for source separation (e.g., greywater), collection systems and pre-treatment considerations.
Treatment processes: Overview of natural, aerobic/anaerobic, combined, disinfection and advanced treatment approaches (conceptual, not prescriptive).
Storage & delivery: Guidance on storage design and distribution for fit‑for‑purpose end uses.
Monitoring & assessment: Common assessment criteria and examples of water quality indicators - provided without specifying thresholds - to support performance verification.
Risk management & emergency response: Risk-based planning, failure modes, contingency measures and emergency response planning.
Operation, maintenance & public engagement: Emphasis on operability, residuals handling (sludge, screenings), owner/operator capacity and community outreach.

Practical applications and users

ISO 23056:2020 is intended for:

Municipal authorities and regulators considering decentralized reuse options
Water and wastewater engineers, urban planners and environmental consultants
Building designers, facility managers and community associations
Developers and utilities evaluating cluster or community reuse schemes

Related standards

ISO 20670 - Water reuse: Vocabulary (referenced for terms and definitions)
Prepared by ISO/TC 282 (Water reuse) - consult national standards bodies for implementation guidance.

Keywords: ISO 23056:2020, decentralized water reuse, onsite water reuse system, water reuse in urban areas, design principles, planning, treatment, monitoring, risk management.

ISO 23056:2020 PDF

Technical details

Abstract

Overview

Key topics

Practical applications and users

Related standards

Related standards

Abstract

Overview

Key topics

Practical applications and users

Related standards

Related standards

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