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

Îndeksa rîska ewlehiya avê

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.

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

Nediyarî

1,000 draws

normalisation, weights, aggregation, imputation

Avahî

4 components

11 leaf indicators

Vegirtin

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
Grafîk
01Nîşander
02Sub-indices
03Domain index
04Pillar
05Pêkhatî
100%
Lîste
  1. Asta stresa avê
    Indicator · IND · %
    Total freshwater withdrawn by all sectors as a percentage of total renewable freshwater resources after subtracting environmental flow requirements.
  2. Tevahiya çavkaniyên ava şirîn ên nûbûyî ji bo her kesî
    Indicator · IND · m3/a/person
    Long-term average internal and external renewable surface and groundwater resources per resident, in cubic metres per year.
  3. Kêmbûna embara ava binerdê
    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. Kêrhatîbûna bikaranîna avê
    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    Gross value added of agriculture, industry and services per cubic metre of water withdrawn by those sectors, at constant 2015 US dollars, weighted by each sector’s share of withdrawals; its change over time is the SDG target measure.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. Nifûsa ku ava vexwarinê ya bi ewlehî birêvebirî bi kar tîne
    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. Nifûsa ku paqijiya bi ewlehî birêvebirî bi kar tîne
    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. Nifûsa bi amûrên bingehîn ên şûştina destan
    Indicator · IND · %
    Share of the population with a hand-washing facility with soap and water available at home.
  8. Avên bi kalîteya baş a ava hawirdorê
    Indicator · IND · %
    Share of monitored river, lake and groundwater bodies whose measured oxygen, salinity, nitrogen, phosphorus and acidity meet national good-quality targets.
  9. Herikînên ava qirêj ên bi ewlehî paqijkirî
    Indicator · IND · %
    Share of domestic and industrial wastewater flows that are treated to a level meeting national or local standards before discharge.
  10. Rêjeya girêdayîbûnê bi ava nûbûyî ya derve
    Indicator · IND · %
    Share of total renewable water resources that originates outside the country, as inflow from upstream countries or shared aquifers.
  11. Rûerda hewzên sînorbirr bi hevkariya çalak
    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. Îndeksa rîska ewlehiya avê
    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. Lawaziya mirov û sîsteman
    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
Not runDi pêvajoyê deQediya
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
–
di geroka te de dixebite
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.
03Rêbaz

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
Nediyarî
1,000 Monte Carlo runs over normalisation, weights, aggregation, imputation
Framework basis
SDG 6; UN-Water framing of water security; OECD/JRC Handbook (2008)
Pir kêm0.0 heta < 2.0
Kêm2.0 heta < 3.5
Navîn3.5 heta < 5.0
Bilind5.0 heta < 6.5
Pir bilind6.5 heta 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.

NîşanderYekîneDelîlÇavkanîPar
Asta stresa avêIND.WAT.stress.water_stress%Class Bfao-aquastat, un-sdg-database, wb-wdi44.4%
Tevahiya çavkaniyên ava şirîn ên nûbûyî ji bo her kesîIND.WAT.stress.renewable_water.pcm3/a/{person}Class Bfao-aquastat, wb-wdi22.2%
Kêmbûna embara ava binerdêIND.WAT.stress.groundwater_depletionmm/aClass Cnasa-grace-fo, igrac-ggis, national-groundwater-monitoring22.2%
Kêrhatîbûna bikaranîna avêIND.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.

NîşanderYekîneDelîlÇavkanîPar
Nifûsa ku ava vexwarinê ya bi ewlehî birêvebirî bi kar tîneIND.WAT.access.safely_managed_drinking_water.share%Class Bwho-unicef-jmp, wb-wdi33.3%
Nifûsa ku paqijiya bi ewlehî birêvebirî bi kar tîneIND.WAT.access.safely_managed_sanitation.share%Class Bwho-unicef-jmp, wb-wdi33.3%
Nifûsa bi amûrên bingehîn ên şûştina destanIND.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.

NîşanderYekîneDelîlÇavkanîPar
Avên bi kalîteya baş a ava hawirdorêIND.WAT.quality.good_ambient_water_quality.share%Class Bunep-gems-water, un-sdg-database50.0%
Herikînên ava qirêj ên bi ewlehî paqijkirîIND.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.

NîşanderYekîneDelîlÇavkanîPar
Rêjeya girêdayîbûnê bi ava nûbûyî ya derveIND.WAT.dependence.external_water_dependency%Class Bfao-aquastat66.7%
Rûerda hewzên sînorbirr bi hevkariya çalakIND.WAT.dependence.transboundary_cooperation.share%Class Bunece-unesco-sdg652, un-sdg-database33.3%
05Qad

Av

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

Sub-domainNîşander
Water stress5
Drinking water and sanitation4
Water quality2
Transboundary dependence2

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

06Nîşander

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.
NîşanderQadSub-domainComponentYekîneAstCrosswalks
Asta stresa avêIND.WAT.stress.water_stressWATWater stresshazard%COUNTRY, ADM1SDG 6.4.2 WB_WDI ER.H2O.FWST.ZS
Puana stresa avê ya bingehîn (binhewz)IND.WAT.stress.baseline_water_stressWATWater stresshazard{score}COUNTRY, ADM1, CITY, GRID, SITE, PORTFOLIO
Tevahiya çavkaniyên ava şirîn ên nûbûyî ji bo her kesîIND.WAT.stress.renewable_water.pcWATWater stresshazardm3/a/{person}COUNTRYWB_WDI ER.H2O.INTR.PC
Kêmbûna embara ava binerdêIND.WAT.stress.groundwater_depletionWATWater stresshazardmm/aCOUNTRY, ADM1, GRID
Kêrhatîbûna bikaranîna avêIND.WAT.stress.water_use_efficiencyWATWater stressadaptive capacity[USD]/m3COUNTRYSDG 6.4.1 WB_WDI ER.GDP.FWTL.M3.KD
Nifûsa ku ava vexwarinê ya bi ewlehî birêvebirî bi kar tîneIND.WAT.access.safely_managed_drinking_water.shareWATDrinking water and sanitationvulnerability%COUNTRY, ADM1, CITYSDG 6.1.1 WB_WDI SH.H2O.SMDW.ZS EPI UWD
Nifûsa ku herî kêm ava vexwarinê ya bingehîn bi kar tîneIND.WAT.access.basic_drinking_water.shareWATDrinking water and sanitationvulnerability%COUNTRY, ADM1WB_WDI SH.H2O.BASW.ZS
Nifûsa ku paqijiya bi ewlehî birêvebirî bi kar tîneIND.WAT.access.safely_managed_sanitation.shareWATDrinking water and sanitationvulnerability%COUNTRY, ADM1, CITYWB_WDI SH.STA.SMSS.ZS SDG 6.2.1 EPI USD
Nifûsa bi amûrên bingehîn ên şûştina destanIND.WAT.access.basic_handwashing.shareWATDrinking water and sanitationvulnerability%COUNTRY, ADM1WB_WDI SH.STA.HYGN.ZS SDG 6.2.1
Avên bi kalîteya baş a ava hawirdorêIND.WAT.quality.good_ambient_water_quality.shareWATWater qualityvulnerability%COUNTRY, ADM1SDG 6.3.2
Herikînên ava qirêj ên bi ewlehî paqijkirîIND.WAT.quality.wastewater_safely_treated.shareWATWater qualitycoping capacity%COUNTRY, CITYSDG 6.3.1 EPI WWT
Rêjeya girêdayîbûnê bi ava nûbûyî ya derveIND.WAT.dependence.external_water_dependencyWATTransboundary dependenceexposure%COUNTRY
Rûerda hewzên sînorbirr bi hevkariya çalakIND.WAT.dependence.transboundary_cooperation.shareWATTransboundary dependencecoping capacity%COUNTRYSDG 6.5.2
07Quote

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
–
Values publish with the edition; the interval, class and change appear here.
Previous edition
–
Range since 2016
–
Coupled composite
–
Coupling score S
–
Pulse, latest week
–
Outlook, 12 months
–
Rêbaz
Indicator Standard 1.0 · NXS-GRX 2026
Draws
1,000
Water security risk index, world, by edition

No released values yet. The first edition draws the history here with its interval band and class bounds.

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.
Hîn tu guherîn tune. Guherînên ji çapa berê ve ji çapa duyem û pê ve li vir têne rêzkirin, bi nîşaneyên ku ew ajotine.
08Nirx

Country values

FIG 5 · Water security risk index: countries (values when released)
Nexşe tê barkirin
AndoraAntîgua û BarbûdaBehreynBarbadosKomorKabo VerdeDomînîkaMîkronezya (Dewletên Federal ên)GrenadaKirîbatîSaint Kitts û NevisSanta LûsyaLîhtenştaynMonakoMaldîvGiravên MarşalMaltaMorîsNaûrûPalaûSingapûrSan MarînoSao Tome û PrînsîpeSeyşelTongaTûvalûKursiya PîrozSaint Vincent û GrenadînSamoa
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.
Tiles
/api/v1/public/grix/risk-products/tiles/wat/{z}/{x}/{y}.mvt
Rêbera çavdêriyê
nis:IDX.WAT.stress.water_security_risk:{ISO3}:{YEAR}:A
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
11Across the 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.

12Jêgirtin

Jêgirtin û ji nû ve bikaranîn

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.