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Global Risks Index
The Global Risks Index · GRX-IDX-WAT · VUL Human and systems vulnerability

水安全风险指数

0–10 index of water security risk combining scarcity and stress, WASH access, water quality and transboundary dependence; geometric so that good access does not offset severe scarcity.

Construction Simulator Indicators
Page GRX-IDX-WATEdition Baseline Edition 2026Evidence close 2026-09-30Indicator Standard IDX.WAT.stress.water_security_riskValues not yet publishedMethod v1.0.0-draft
FIG 1 · Method card
Aggregation

geometric

equal weights · floor 0.1 where geometric

不确定性

1,000 draws

normalisation, weights, aggregation, imputation

结构

4 components

11 leaf indicators

覆盖范围

75% minimum

modelled share ≤ 20%

From the Indicator Standard definition of this index.
11
leaf indicators
4
components
1,000
Monte Carlo draws
6
series read it
01Construction

From indicators to the composite

The water dimension of a place profile; each sub-index stays visible beside the index.

computation
How Water security risk is computed
Graph18 nodes
流程图
01指标
02Sub-indices
03Domain index
04支柱
05综合
100%
索引
  1. 水资源压力水平
    Indicator · IND · %
    Total freshwater withdrawn by all sectors as a percentage of total renewable freshwater resources after subtracting environmental flow requirements.
  2. 人均可再生淡水资源总量
    Indicator · IND · m3/a/person
    Long-term average internal and external renewable surface and groundwater resources per resident, in cubic metres per year.
  3. 地下水储量下降
    Indicator · IND · mm/a
    Trend in terrestrial groundwater storage over at least 15 years, in millimetres of equivalent water height per year (positive = decline), from satellite gravimetry with modelled soil-moisture and surface-water storage removed.
  4. 用水效率
    Indicator · IND · USD/m3
    Gross value added of agriculture, industry and services per cubic metre of water withdrawn by those sectors, at constant 2015 US dollars, weighted by each sector’s share of withdrawals; its change over time is the SDG target measure.
  5. 使用安全管理饮用水的人口
    Indicator · IND · %
    Share of the population using an improved drinking-water source located on premises, available when needed and free from faecal and priority chemical contamination.
  6. 使用安全管理卫生设施的人口
    Indicator · IND · %
    Share of the population using an improved sanitation facility not shared with other households, whose excreta are safely disposed of in situ or treated off site.
  7. 拥有基本洗手设施的人口
    Indicator · IND · %
    Share of the population with a hand-washing facility with soap and water available at home.
  8. 环境水质良好的水体
    Indicator · IND · %
    Share of monitored river, lake and groundwater bodies whose measured oxygen, salinity, nitrogen, phosphorus and acidity meet national good-quality targets.
  9. 经安全处理的废水
    Indicator · IND · %
    Share of domestic and industrial wastewater flows that are treated to a level meeting national or local standards before discharge.
  10. 对外部可再生水的依赖率
    Indicator · IND · %
    Share of total renewable water resources that originates outside the country, as inflow from upstream countries or shared aquifers.
  11. 有运作中合作安排的跨界流域面积
    Indicator · IND · %
    Share of the country’s transboundary river, lake and aquifer basin area covered by an arrangement for water cooperation that is operational.
  12. Water scarcity and stress sub-index
    Sub-index · SUB · w 2 · 40.0%
    Composite of the level of water stress, renewable water per capita, groundwater storage decline and water-use efficiency.
  13. Drinking water, sanitation and hygiene access sub-index
    Sub-index · SUB · w 1 · 20.0%
    Composite of safely managed drinking water, safely managed sanitation and basic hand-washing coverage.
  14. Water quality sub-index
    Sub-index · SUB · w 1 · 20.0%
    Composite of the share of water bodies with good ambient quality and the share of wastewater safely treated.
  15. Transboundary water dependence sub-index
    Sub-index · SUB · w 1 · 20.0%
    Composite of the external water dependency ratio and the share of transboundary basin area under operational cooperation.
  16. 水安全风险指数
    Domain index · IDX · geometric
    0–10 index of water security risk combining scarcity and stress, WASH access, water quality and transboundary dependence; geometric so that good access does not offset severe scarcity.
  17. 人类与系统脆弱性
    Pillar · PILLAR · 8 indices
    How susceptible are people, livelihoods, ecosystems and essential systems to harm when a shock arrives?
  18. NXS-GRX (canonical data, provenance and risk) Composite Risk
    Composite · COMPOSITE · four pillars
    Composite = (HTE × VUL × MSF × LCC)^(1/4), each pillar on 0–10 floored at 0.1; pillar = expert-weighted geometric mean of its domain indices
未运行进行中已完成
FIG 2. 11 indicators, 4 components, real Indicator Standard weights (the bar under each node is its share). Select a node to trace what it feeds and what feeds it; Simulate run plays the computation in order. Schematic of the construction; source: Indicator Standard composite definitions.
02Simulator

Run this index’s own aggregation

Set each component, change the aggregation or the weight uncertainty, and watch the interval, the class probability and each component’s contribution respond.

FIG 3 · Simulator: aggregate water security risk on your numbers
Components (0 to 10)
3.0
5.0
7.0
4.0
25
1
–
在您的浏览器中运行
Contribution of each component (leave one out)
Simulator: the index’s published aggregation run on numbers you set, with 1,000 draws over weights and aggregation. The slider positions are starting points for the explainer, not NXS-GRX values. Simulated on your own inputs; not a measured result.
03方法

Treatment, normalisation, weighting, aggregation, uncertainty

Treatment
WINSORISE
Outlier rule
|skew| > 2, kurtosis > 3.5
Normalisation
min–max rescaling
Imputation
NONE
Coverage minimum
75% of components
Modelled share cap
20% of weight
Weighting
equal
Aggregation
geometric
Scale
0 to 10
不确定性
1,000 Monte Carlo runs over normalisation, weights, aggregation, imputation
Framework basis
SDG 6; UN-Water framing of water security; OECD/JRC Handbook (2008)
很低0.0 至 < 2.0
低2.0 至 < 3.5
中3.5 至 < 5.0
高5.0 至 < 6.5
很高6.5 至 10.0
04Components

4 components, 11 indicators

Water scarcity and stress sub-index w 2

Composite of the level of water stress, renewable water per capita, groundwater storage decline and water-use efficiency.

指标单位证据来源占比
水资源压力水平IND.WAT.stress.water_stress%Class Bfao-aquastat, un-sdg-database, wb-wdi44.4%
人均可再生淡水资源总量IND.WAT.stress.renewable_water.pcm3/a/{person}Class Bfao-aquastat, wb-wdi22.2%
地下水储量下降IND.WAT.stress.groundwater_depletionmm/aClass Cnasa-grace-fo, igrac-ggis, national-groundwater-monitoring22.2%
用水效率IND.WAT.stress.water_use_efficiency[USD]/m3Class Bfao-aquastat, un-sdg-database, wb-wdi11.1%

Drinking water, sanitation and hygiene access sub-index w 1

Composite of safely managed drinking water, safely managed sanitation and basic hand-washing coverage.

指标单位证据来源占比
使用安全管理饮用水的人口IND.WAT.access.safely_managed_drinking_water.share%Class Bwho-unicef-jmp, wb-wdi33.3%
使用安全管理卫生设施的人口IND.WAT.access.safely_managed_sanitation.share%Class Bwho-unicef-jmp, wb-wdi33.3%
拥有基本洗手设施的人口IND.WAT.access.basic_handwashing.share%Class Bwho-unicef-jmp, wb-wdi33.3%

Water quality sub-index w 1

Composite of the share of water bodies with good ambient quality and the share of wastewater safely treated.

指标单位证据来源占比
环境水质良好的水体IND.WAT.quality.good_ambient_water_quality.share%Class Bunep-gems-water, un-sdg-database50.0%
经安全处理的废水IND.WAT.quality.wastewater_safely_treated.share%Class Bwho-un-habitat-wastewater, un-sdg-database50.0%

Transboundary water dependence sub-index w 1

Composite of the external water dependency ratio and the share of transboundary basin area under operational cooperation.

指标单位证据来源占比
对外部可再生水的依赖率IND.WAT.dependence.external_water_dependency%Class Bfao-aquastat66.7%
有运作中合作安排的跨界流域面积IND.WAT.dependence.transboundary_cooperation.share%Class Bunece-unesco-sdg652, un-sdg-database33.3%
05领域

水

Water availability, stress, access, quality and transboundary dependence.

Sub-domain指标
水资源压力5
Drinking water and sanitation4
Water quality2
Transboundary dependence2

Anchor frameworks (pillar structure and definitions only): SDG 6; FAO AQUASTAT.

06指标

All 13 water indicators

FIG 4 · Indicators in scope, by domain and sub-domain
WAT · 13
Area is the number of indicator definitions; colour is the pillar the domain feeds (Macroeconomy and Space feed through their indices). Select a block to filter the table. Source: Indicator Standard Nexus Indicator Standard register.
指标领域Sub-domain组件单位级别Crosswalks
水资源压力水平IND.WAT.stress.water_stressWAT水资源压力hazard%COUNTRY, ADM1SDG 6.4.2 WB_WDI ER.H2O.FWST.ZS
基线水资源压力得分（子流域）IND.WAT.stress.baseline_water_stressWAT水资源压力hazard{score}COUNTRY, ADM1, CITY, GRID, SITE, PORTFOLIO
人均可再生淡水资源总量IND.WAT.stress.renewable_water.pcWAT水资源压力hazardm3/a/{person}COUNTRYWB_WDI ER.H2O.INTR.PC
地下水储量下降IND.WAT.stress.groundwater_depletionWAT水资源压力hazardmm/aCOUNTRY, ADM1, GRID
用水效率IND.WAT.stress.water_use_efficiencyWAT水资源压力adaptive capacity[USD]/m3COUNTRYSDG 6.4.1 WB_WDI ER.GDP.FWTL.M3.KD
使用安全管理饮用水的人口IND.WAT.access.safely_managed_drinking_water.shareWATDrinking water and sanitationvulnerability%COUNTRY, ADM1, CITYSDG 6.1.1 WB_WDI SH.H2O.SMDW.ZS EPI UWD
至少使用基本饮用水的人口IND.WAT.access.basic_drinking_water.shareWATDrinking water and sanitationvulnerability%COUNTRY, ADM1WB_WDI SH.H2O.BASW.ZS
使用安全管理卫生设施的人口IND.WAT.access.safely_managed_sanitation.shareWATDrinking water and sanitationvulnerability%COUNTRY, ADM1, CITYWB_WDI SH.STA.SMSS.ZS SDG 6.2.1 EPI USD
拥有基本洗手设施的人口IND.WAT.access.basic_handwashing.shareWATDrinking water and sanitationvulnerability%COUNTRY, ADM1WB_WDI SH.STA.HYGN.ZS SDG 6.2.1
环境水质良好的水体IND.WAT.quality.good_ambient_water_quality.shareWATWater qualityvulnerability%COUNTRY, ADM1SDG 6.3.2
经安全处理的废水IND.WAT.quality.wastewater_safely_treated.shareWATWater qualitycoping capacity%COUNTRY, CITYSDG 6.3.1 EPI WWT
对外部可再生水的依赖率IND.WAT.dependence.external_water_dependencyWATTransboundary dependenceexposure%COUNTRY
有运作中合作安排的跨界流域面积IND.WAT.dependence.transboundary_cooperation.shareWATTransboundary dependencecoping capacity%COUNTRYSDG 6.5.2
07引用

Water security risk index, world

The world reading of this index, every country as a tile and the largest movements since the previous edition.

NXS-GRX · WAT · 195 profiles · 0–10 scale
Water security risk index, world
–
数值随版本发布；区间、类别和变化将显示在这里。
上一版
–
Range since 2016
–
耦合综合
–
耦合得分 S
–
脉搏，最近一周
–
Outlook, 12 months
–
方法
Indicator Standard 1.0 · NXS-GRX 2026
抽样次数
1,000
Water security risk index, world, by edition

尚无已发布的数值。第一版发布后将在这里绘制历史，并附区间带和类别边界。

The line is the point value by edition; the band is the 90% interval; dashed lines are the class bounds at 2, 3.5, 5 and 6.5.
非洲54
DZA AGO BEN BWA BFA BDI CPV CMR CAF TCD COM COG CIV COD DJI EGY GNQ ERI SWZ ETH GAB GMB GHA GIN GNB KEN LSO LBR LBY MDG MWI MLI MRT MUS MAR MOZ NAM NER NGA RWA STP SEN SYC SLE SOM ZAF SSD SDN TGO TUN UGA TZA ZMB ZWE
美洲35
ATG ARG BHS BRB BLZ BOL BRA CAN CHL COL CRI CUB DMA DOM ECU SLV GRD GTM GUY HTI HND JAM MEX NIC PAN PRY PER KNA LCA VCT SUR TTO USA URY VEN
亚洲48
AFG ARM AZE BHR BGD BTN BRN KHM CHN CYP PRK GEO IND IDN IRN IRQ ISR JPN JOR KAZ KWT KGZ LAO LBN MYS MDV MNG MMR NPL OMN PAK PHL QAT KOR SAU SGP LKA PSE SYR TJK THA TLS TUR TKM ARE UZB VNM YEM
欧洲44
ALB AND AUT BLR BEL BIH BGR HRV CZE DNK EST FIN FRA DEU GRC VAT HUN ISL IRL ITA LVA LIE LTU LUX MLT MCO MNE NLD MKD NOR POL PRT MDA ROU RUS SMR SRB SVK SVN ESP SWE CHE UKR GBR
大洋洲14
AUS FJI KIR MHL FSM NRU NZL PLW PNG WSM SLB TON TUV VUT
暂无变动。 自第二版起，与上一版相比的变化将在此列出，并附上驱动这些变化的指标。
08数值

Country values

FIG 5 · Water security risk index: countries (values when released)
正在加载地图
安道尔安提瓜和巴布达巴林巴巴多斯科摩罗佛得角多米尼克密克罗尼西亚（联邦）格林纳达基里巴斯圣基茨和尼维斯圣卢西亚列支敦士登摩纳哥马尔代夫马绍尔群岛马耳他毛里求斯瑙鲁帕劳新加坡圣马力诺圣多美和普林西比塞舌尔汤加图瓦卢教廷圣文森特和格林纳丁斯萨摩亚
Equal Earth · Natural Earth 1:110mValues when released
Until the first edition is released the map shows UN M49 regions or the Nexus Reports edition; it then shows this index’s classes with each country’s interval on hover. Countries are listed by name, never ordered by value.
瓦片
/api/v1/public/grix/risk-products/tiles/wat/{z}/{x}/{y}.mvt
观测键
nis:IDX.WAT.stress.water_security_risk:{ISO3}:{YEAR}:A
09系列

Series that read this index

GLBGlobal SystemsThe state of interdependent global risk: the twenty domain indices aggregated to the world, the five core systems (water, energy, food, health, biodiversity) and their couplings, the global tail register and the gap between perceived and measured risk. GS-01Global WaterAccess, scarcity, quality, floods and droughts, groundwater depletion, transboundary dependency and the couplings of water to energy, food, health and nature. SR-07Food, water and energyThe food–water–energy nexus: shared stressors, trade-offs and joint failures. SR-09Planetary boundariesEarth-system boundaries and tipping elements as slow-onset, high-impact risk. XT-01Artificial Intelligence and Agentic SystemsAI and agentic systems as physical infrastructure (compute, energy, water, materials and supply chains) and as a hazard source: failure, misuse, concentration and oversight gaps. TH-01Nexus InterdependencyThe water, energy, food, health and biodiversity systems read together: drought to energy stress, energy disruption to health stress, biodiversity loss to food-system stress, flood to water contamination, heat to health and grid stress, cyber-physical disruption across all five.
10Validity

Crosswalks and validity checks

Crosswalks map leaf indicators to source code lists; established indices are used for validity checks, never re-weighted as inputs.

Code systemLeaf indicators mapped
SDG8
WB_WDI6
EPI3
11贯穿 Nexus

Platforms, standards and ways to take part

Field and service platforms of GCRI, GRF and GRA, the Nexus Risk Standards for this domain, learning, working groups and open calls. Every link is a live page.

12引用

引用与再利用

GCRI Canada (2026). The Global Risks Index (NXS-GRX): Water security risk index (GRX-IDX-WAT), Baseline Edition 2026. Preparatory working draft. https://risksindex.com/indices/water-security-risk/ UNI NXS-GRX-AR-000131.

See this index in every country profile

Each profile shows this index with its interval and class once released.

Country profiles All indices

状态

The Global Risks Index 的方法、结构和定义为预备性工作草案（2026），供审阅和评论，不供实施。在从受治理的证据截取中发布版本之前，不会出现任何数值；届时数值将附有区间、类别、来源及其更正途径。模拟器以您选择的数字运行已发布的方法，绝不显示 NXS-GRX 数值。

NXS-GRX 不是什么

NXS-GRX 是研究和风险分析信息。它不是信用评级或 ESG 评级，不使用任何评级尺度；它不是金融工具的基准，不是官方统计，不是紧急警报或官方分类，也不是建议。不得用于评估自然人。风险等级是已发布尺度上的区间，绝不是对国家或个人的排名。

机构与来源

The Nexus Consortium is stewarded by three independent not-for-profit institutions: The Global Centre for Risk and Innovation (GCRI), through GCRI US in Washington, DC and GCRI Canada in Ontario, with GCRI Canada as Lead Institution, Consortium Secretariat and lead contracting organisation; The Global Risks Forum (GRF); and The Global Risks Alliance (GRA). Technology, infrastructure and service providers work with the Consortium at arm’s length under written agreements, like every other external party in the public-private-planet model, and hold no role in its stewardship.

每个数值均附有其来源的署名，这些来源保留各自的许可。外部名称仅为互操作性而引用。Nexus 撰写的文本拟在发布时采用 CC BY 4.0。

Avis en français

La méthodologie et les définitions du NXS-GRX sont un projet de travail préparatoire (2026). Le NXS-GRX est une information de recherche et d’analyse des risques : ni notation, ni indice de référence financier, ni statistique officielle, ni alerte, ni conseil. Les classes de risque sont des bandes sur une échelle publiée, non des classements.