ISO 24566-3:2025 PDF

Drinking water, wastewater and stormwater systems and services — Adaptation of water services to climate change impacts — Part 3: Drinking water services

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Title (English):

ISO 24566-3:2025

Drinking water, wastewater and stormwater systems and services — Adaptation of water services to climate change impacts — Part 3: Drinking water services

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 38
Publication date:: October 24, 2025
Edition:: ISO IS 24566 edition 1 version 1
ICS:: 03.080.30

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Description (English):

This document provides guidance and requirements for identifying and assessing impacts of climate change on drinking water systems and for developing strategies for the adaptation to these impacts. The assessment of the impacts is based on the assessment principles described in ISO 24566-1. This document also provides examples of some of the impacts of climate change on drinking water systems and of the responses that have been implemented by municipal water services or by the relevant jurisdiction (e.g. municipality or region served by the service). The examples of responses illustrate adaptation strategies that have been applied.

Technical details

Technical committee: ISO/TC 224 - Drinking water, wastewater and stormwater systems and services
SKU: ISO 24566-3:2025

Abstract

Overview

ISO 24566-3:2025 - "Drinking water, wastewater and stormwater systems and services - Adaptation of water services to climate change impacts - Part 3: Drinking water services" provides guidance and requirements for identifying and assessing climate change impacts on drinking water systems and for developing adaptation strategies. Assessment principles follow ISO 24566-1. The standard includes examples of observed impacts and implemented responses by municipal water services and jurisdictions to illustrate practical adaptation measures.

Key Topics and Requirements

Impact identification and assessment: Guidance for identifying current and future climate-related hazards (e.g., hydrological changes, extreme weather) and assessing their effects on drinking water services.
Methodology: A structured approach for assessing key functions, system assets, governance, operations and asset management, risk management, and metrics and targets.
Vulnerability and opportunity assessments: Procedures to evaluate current and future system vulnerabilities and opportunities across governance, strategy, operations, and asset portfolios.
Adaptation strategy development: Requirements for formulating adaptation options, response categorization, assessment protocols, and implementation planning.
Financial assessments: Guidance on financing adaptation, cost‑benefit analysis and economic considerations for prioritizing actions.
Templates and tools: Proposed templates for response options, action prioritization and categorization to support implementation.
Monitor, review and update: Requirements for monitoring performance, reviewing adaptation measures and updating strategies over time.
Illustrative examples: Annex with examples of drinking water management responses implemented by municipal services or regional authorities.

Applications and Who Uses It

ISO 24566-3:2025 is intended for professionals and organizations responsible for drinking water supply and resilience planning, including:

Municipal and regional water utilities and operators
Water resource managers and planners
Asset managers and infrastructure engineers
Risk and emergency managers in the water sector
Policy makers and regulators responsible for climate adaptation and public health protection
Consultants and environmental advisors supporting adaptation planning

Practical uses include vulnerability assessments, development of climate-resilient asset management plans, integration of adaptation into risk management and governance, and preparation of investment cases supported by cost‑benefit analysis.

Related Standards

ISO 24566-1 (assessment principles for adaptation)
ISO 24513:2019 (vocabulary for water services)
ISO 24527, ISO 24528, ISO/TS 24541 (operational guidance for drinking water systems)
ISO 14091 (guidelines for climate change risk assessment)

Keywords: ISO 24566-3:2025, drinking water services, climate change adaptation, vulnerability assessment, risk management, asset management, adaptation strategy, water utilities.

Related standards

Standards mentioned in the description

Abstract

Overview

Key Topics and Requirements

Impact identification and assessment: Guidance for identifying current and future climate-related hazards (e.g., hydrological changes, extreme weather) and assessing their effects on drinking water services.
Methodology: A structured approach for assessing key functions, system assets, governance, operations and asset management, risk management, and metrics and targets.
Vulnerability and opportunity assessments: Procedures to evaluate current and future system vulnerabilities and opportunities across governance, strategy, operations, and asset portfolios.
Adaptation strategy development: Requirements for formulating adaptation options, response categorization, assessment protocols, and implementation planning.
Financial assessments: Guidance on financing adaptation, cost‑benefit analysis and economic considerations for prioritizing actions.
Templates and tools: Proposed templates for response options, action prioritization and categorization to support implementation.
Monitor, review and update: Requirements for monitoring performance, reviewing adaptation measures and updating strategies over time.
Illustrative examples: Annex with examples of drinking water management responses implemented by municipal services or regional authorities.

Applications and Who Uses It

ISO 24566-3:2025 is intended for professionals and organizations responsible for drinking water supply and resilience planning, including:

Municipal and regional water utilities and operators
Water resource managers and planners
Asset managers and infrastructure engineers
Risk and emergency managers in the water sector
Policy makers and regulators responsible for climate adaptation and public health protection
Consultants and environmental advisors supporting adaptation planning

Related Standards

ISO 24566-1 (assessment principles for adaptation)
ISO 24513:2019 (vocabulary for water services)
ISO 24527, ISO 24528, ISO/TS 24541 (operational guidance for drinking water systems)
ISO 14091 (guidelines for climate change risk assessment)

Keywords: ISO 24566-3:2025, drinking water services, climate change adaptation, vulnerability assessment, risk management, asset management, adaptation strategy, water utilities.

ISO 24566-3:2025 PDF

Technical details

Abstract

Overview

Key Topics and Requirements

Applications and Who Uses It

Related Standards

Related standards

Abstract

Overview

Key Topics and Requirements

Applications and Who Uses It

Related Standards

Related standards

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