ISO/TC 282/SC 2 - Water reuse in urban areas

This document provides guidelines for the planning and design of centralized water reuse systems and water reuse applications in urban areas. This document addresses centralized water reuse systems in their entirety and is applicable to any water reclamation system component (e.g. source water, treatment, storage, distribution, operation and maintenance and monitoring). This document provides: — system components and possible models of a centralized water reuse system; — design principles of a centralized 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. This document excludes design parameters and regulatory values of a centralized water reuse system.

This document provides guidelines for the management of centralized water reuse systems and water reuse applications in urban areas. This document addresses centralized water reuse systems in their entirety and is applicable to any water reclamation system component (e.g. source water, treatment, storage, distribution, operation and maintenance and monitoring). This document provides: — principles and methodology of reclaimed water management; — management issues in each system component of a centralized water reuse system; — water quality monitoring; — specific aspects for consideration and emergency response. This document excludes monitoring parameters and regulatory values (e.g. water quality limits) of a centralized water reuse system.

This document provides a guideline for good design and practice for urban reclaimed water that recharges into landscape water, including urban stream flow (e.g. rivers and lakes), aesthetic impoundments and wetlands replenishment, to ensure the proper support of the aquatic ecosystem. This document covers urban stream flow and leisure with possible incidental body contact. It does not cover urban irrigation, such as the irrigation of elements of the natural environment, urban public areas, or residential areas. It does not cover the cultivation of aquatic plants or animals for food purposes, including their sale. This document provides recommendations for reclaimed water for landscaping uses, including those for planning, design, management, and maintenance.

This document provides guidance for biological filtration of secondary effluent for water reuse. It specifies general recommendations, process components and technical recommendations of each component, post-treatment process and water reuse applications. This document is applicable to all types of stakeholders involved in implementing biological filtration for advanced treatment of secondary effluent for water reuse.

This document provides guidelines to evaluate the benefits of reclaimed water for applications requiring different levels of water quality and for beneficial use in urban areas. This document is applicable, among others, by practitioners and authorities to assist water reuse planning, design, operation and management. This document provides evaluation indicators, procedures and examples of reclaimed water use 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.

This document specifies the general principles and provides guidance on the quantitative characterization of the life cycle cost of a complete wastewater management system, including collection, treatment and, optionally, reuse. It enables the consideration of different degrees of distribution, including non-sewered systems for one or more dwellings and associated trucking operations. The methodology provided in this document is applicable to urban or rural areas wherein several decentralized wastewater treatment and reuse systems can provide a lower cost solution than a single centralized plant. Similarly, the same methodology can be applied for industrial reuse systems, where several separate plants on a large industrial site can be considered instead of one treatment system. The scope of this document includes the following: a) Guidance on the determination of the degrees of distribution of decentralized wastewater treatment and reuse systems. b) A definition of the elements and components included in the life cycle cost of the different degrees of distribution in wastewater management systems, including construction, operation and maintenance. c) Guidance on the required steps for calculating life cycle cost indicators, including considerations of term and interest, operation and maintenance, replacement parts, equipment life expectancy, the value of water for reuse and other income from by-products. d) A definition of the metrics for reporting results, including the cost per unit, scope, term and interest. The following secondary costs and other considerations are not within the scope of this document: — cost of eventual disposal of the system; — guidance on wastewater treatment process selection and design; — health and sustainability considerations (although health and sustainability are primary considerations in design and decisions); — social impact factors and/or environmental risks and impacts.

This document provides guidelines for the treatment and reuse of MSW leachate. It is applicable to personnel involved in the design, management, operation and supervision of the treatment and reuse of MSW leachate and environmental authorities engaged in regulation.

This document provides parameters and methods for water quality stability evaluation of reclaimed water. This document can be used in various stages of water reclamation projects including storage, transportation, application and post-assessment. This document considers the needs and utilization of reclaimed water and is applicable to the evaluation and management of water quality stability of reclaimed water from municipal wastewater sources, including chemical stability and biological stability.

This document provides guidelines for the planning and design of a reverse osmosis (RO) treatment system of municipal wastewater. This document is applicable to practitioners and authorities who intend to implement principles and decisions on RO treatment of municipal wastewater in a safe, reliable and sustainable manner. This document addresses RO treatment systems of municipal wastewater in their entirety and is applicable to any RO treatment system component. This document provides: — standard terms and definitions; — a description of the system components of an RO treatment system of municipal wastewater; — design principles of an RO treatment system of municipal wastewater; — statements on the feed water quality and technical requirements of an RO treatment system; — guidance for operation and maintenance of an RO treatment system; — specific aspects for consideration and emergency response. Design parameters and regulatory values of an RO treatment system of municipal wastewater are out of the scope of this document.

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.

This document provides water reuse safety evaluation and public acceptance parameters and methods for users who design, manage, and/or oversee the non-potable water reuse schemes or activities in urban areas from the viewpoint of water quality. The document can be used in various stages of non-potable water reuse projects such as design, operation, and post assessment. The document is applicable to non-potable water reuse in urban areas with reclaimed water from municipal wastewater sources. The wastewater sources can also include a limited contribution of industrial wastewater input. While some communities are turning to potable reuse to meet water supply needs, discussion of safety evaluation of potable reuse is outside the scope of this document.

ISO 20760-1:2018 provides guidelines for the planning and design of centralized water reuse systems and water reuse applications in urban areas. ISO 20760-1:2018 is applicable to practitioners and authorities who intend to implement principles and decisions on centralized water reuse in a safe, reliable and sustainable manner. ISO 20760-1:2018 addresses centralized water reuse systems in their entirety and is applicable to any water reclamation system component (e.g. source water, treatment, storage, distribution, operation and maintenance and monitoring). ISO 20760-1:2018 provides: - standard terms and definitions; - system components and possible models of a centralized water reuse system; - design principles of a centralized 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 centralized water reuse system are out of the scope of this document.

ISO 20760-2:2017 provides guidelines for the management of centralized water reuse systems and water reuse applications in urban areas. ISO 20760-2:2017 is applicable to practitioners and authorities who intend to implement management concepts, principles and supports on centralized water reuse in a safe, reliable and sustainable manner. ISO 20760-2:2017 addresses centralized water reuse systems in their entirety and is applicable to any water reclamation system component (e.g. source water, treatment, storage, distribution, operation and maintenance and monitoring). ISO 20760-2:2017 provides: - standard terms and definitions; - principles and methodology of reclaimed water management; - management issues in each system component of a centralized water reuse system; - specific aspects for consideration and emergency response. Monitoring parameters and regulatory values of a centralized water reuse system are out of the scope of this document.

This international standard will provide guidance for the management of urban decentralized water reuse system. The guide emphasizes the systematicness of the management of decentralized water reuse system and will include the management principles, management modes, management elements, technical route management and support management of decentralized water reuse system. This International Standard presents: (1) Preface; (2) Scope; (3) Normative references; (4) Terms and definitions; (5) Management overview; (6) Technical route management, including source water collection management, treatment process management, storage and distribution management and terminal utilization management; (7) Support management, including monitoring management, risk management, emergency management and participants management.