Indice di rischio per la sicurezza idrica
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.
geometric
equal weights · floor 0.1 where geometric
1,000 draws
normalisation, weights, aggregation, imputation
4 components
11 leaf indicators
75% minimum
modelled share ≤ 20%
From indicators to the composite
The water dimension of a place profile; each sub-index stays visible beside the index.
- Livello di stress idricoIndicator · IND · %Total freshwater withdrawn by all sectors as a percentage of total renewable freshwater resources after subtracting environmental flow requirements.
- Risorse totali rinnovabili di acqua dolce pro capiteIndicator · IND · m3/a/personLong-term average internal and external renewable surface and groundwater resources per resident, in cubic metres per year.
- Diminuzione delle riserve di acque sotterraneeIndicator · IND · mm/aTrend 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.
- Efficienza nell'uso dell'acquaIndicator · IND · USD/m3Gross value added of agriculture, industry and services per cubic metre of water withdrawn by those sectors, at constant 2015 US dollars, weighted by each sector’s share of withdrawals; its change over time is the SDG target measure.
- Popolazione che utilizza acqua potabile gestita in modo sicuroIndicator · 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.
- Popolazione che utilizza servizi igienico-sanitari gestiti in modo sicuroIndicator · 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.
- Popolazione con strutture di base per il lavaggio delle maniIndicator · IND · %Share of the population with a hand-washing facility with soap and water available at home.
- Corpi idrici con buona qualità ambientale dell'acquaIndicator · IND · %Share of monitored river, lake and groundwater bodies whose measured oxygen, salinity, nitrogen, phosphorus and acidity meet national good-quality targets.
- Flussi di acque reflue trattati in modo sicuroIndicator · IND · %Share of domestic and industrial wastewater flows that are treated to a level meeting national or local standards before discharge.
- Indice di dipendenza da acque rinnovabili esterneIndicator · IND · %Share of total renewable water resources that originates outside the country, as inflow from upstream countries or shared aquifers.
- Superficie di bacini transfrontalieri con cooperazione operativaIndicator · IND · %Share of the country’s transboundary river, lake and aquifer basin area covered by an arrangement for water cooperation that is operational.
- Water scarcity and stress sub-indexSub-index · SUB · w 2 · 40.0%Composite of the level of water stress, renewable water per capita, groundwater storage decline and water-use efficiency.
- Drinking water, sanitation and hygiene access sub-indexSub-index · SUB · w 1 · 20.0%Composite of safely managed drinking water, safely managed sanitation and basic hand-washing coverage.
- Water quality sub-indexSub-index · SUB · w 1 · 20.0%Composite of the share of water bodies with good ambient quality and the share of wastewater safely treated.
- Transboundary water dependence sub-indexSub-index · SUB · w 1 · 20.0%Composite of the external water dependency ratio and the share of transboundary basin area under operational cooperation.
- Indice di rischio per la sicurezza idricaDomain index · IDX · geometric0–10 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.
- Vulnerabilità umana e dei sistemiPillar · PILLAR · 8 indicesHow susceptible are people, livelihoods, ecosystems and essential systems to harm when a shock arrives?
- NXS-GRX (canonical data, provenance and risk) Composite RiskComposite · COMPOSITE · four pillarsComposite = (HTE × VUL × MSF × LCC)^(1/4), each pillar on 0–10 floored at 0.1; pillar = expert-weighted geometric mean of its domain indices
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.
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
- Incertezza
- 1,000 Monte Carlo runs over normalisation, weights, aggregation, imputation
- Framework basis
- SDG 6; UN-Water framing of water security; OECD/JRC Handbook (2008)
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.
| Indicatore | Unità | Evidenze | Fonti | Quota |
|---|---|---|---|---|
Livello di stress idricoIND.WAT.stress.water_stress | % | Class B | fao-aquastat, un-sdg-database, wb-wdi | 44.4% |
Risorse totali rinnovabili di acqua dolce pro capiteIND.WAT.stress.renewable_water.pc | m3/a/{person} | Class B | fao-aquastat, wb-wdi | 22.2% |
Diminuzione delle riserve di acque sotterraneeIND.WAT.stress.groundwater_depletion | mm/a | Class C | nasa-grace-fo, igrac-ggis, national-groundwater-monitoring | 22.2% |
Efficienza nell'uso dell'acquaIND.WAT.stress.water_use_efficiency | [USD]/m3 | Class B | fao-aquastat, un-sdg-database, wb-wdi | 11.1% |
Drinking water, sanitation and hygiene access sub-index w 1
Composite of safely managed drinking water, safely managed sanitation and basic hand-washing coverage.
| Indicatore | Unità | Evidenze | Fonti | Quota |
|---|---|---|---|---|
Popolazione che utilizza acqua potabile gestita in modo sicuroIND.WAT.access.safely_managed_drinking_water.share | % | Class B | who-unicef-jmp, wb-wdi | 33.3% |
Popolazione che utilizza servizi igienico-sanitari gestiti in modo sicuroIND.WAT.access.safely_managed_sanitation.share | % | Class B | who-unicef-jmp, wb-wdi | 33.3% |
Popolazione con strutture di base per il lavaggio delle maniIND.WAT.access.basic_handwashing.share | % | Class B | who-unicef-jmp, wb-wdi | 33.3% |
Water quality sub-index w 1
Composite of the share of water bodies with good ambient quality and the share of wastewater safely treated.
| Indicatore | Unità | Evidenze | Fonti | Quota |
|---|---|---|---|---|
Corpi idrici con buona qualità ambientale dell'acquaIND.WAT.quality.good_ambient_water_quality.share | % | Class B | unep-gems-water, un-sdg-database | 50.0% |
Flussi di acque reflue trattati in modo sicuroIND.WAT.quality.wastewater_safely_treated.share | % | Class B | who-un-habitat-wastewater, un-sdg-database | 50.0% |
Transboundary water dependence sub-index w 1
Composite of the external water dependency ratio and the share of transboundary basin area under operational cooperation.
| Indicatore | Unità | Evidenze | Fonti | Quota |
|---|---|---|---|---|
Indice di dipendenza da acque rinnovabili esterneIND.WAT.dependence.external_water_dependency | % | Class B | fao-aquastat | 66.7% |
Superficie di bacini transfrontalieri con cooperazione operativaIND.WAT.dependence.transboundary_cooperation.share | % | Class B | unece-unesco-sdg652, un-sdg-database | 33.3% |
Acqua
Water availability, stress, access, quality and transboundary dependence.
| Sub-domain | Indicatori |
|---|---|
| Stress idrico | 5 |
| Drinking water and sanitation | 4 |
| Water quality | 2 |
| Transboundary dependence | 2 |
Anchor frameworks (pillar structure and definitions only): SDG 6; FAO AQUASTAT.
All 13 water indicators
| Indicatore | Dominio | Sub-domain | Componente | Unità | Livelli | Crosswalks |
|---|---|---|---|---|---|---|
Livello di stress idricoIND.WAT.stress.water_stress | WAT | Stress idrico | hazard | % | COUNTRY, ADM1 | SDG 6.4.2 WB_WDI ER.H2O.FWST.ZS |
Punteggio di stress idrico di base (sottobacino)IND.WAT.stress.baseline_water_stress | WAT | Stress idrico | hazard | {score} | COUNTRY, ADM1, CITY, GRID, SITE, PORTFOLIO | |
Risorse totali rinnovabili di acqua dolce pro capiteIND.WAT.stress.renewable_water.pc | WAT | Stress idrico | hazard | m3/a/{person} | COUNTRY | WB_WDI ER.H2O.INTR.PC |
Diminuzione delle riserve di acque sotterraneeIND.WAT.stress.groundwater_depletion | WAT | Stress idrico | hazard | mm/a | COUNTRY, ADM1, GRID | |
Efficienza nell'uso dell'acquaIND.WAT.stress.water_use_efficiency | WAT | Stress idrico | adaptive capacity | [USD]/m3 | COUNTRY | SDG 6.4.1 WB_WDI ER.GDP.FWTL.M3.KD |
Popolazione che utilizza acqua potabile gestita in modo sicuroIND.WAT.access.safely_managed_drinking_water.share | WAT | Drinking water and sanitation | vulnerability | % | COUNTRY, ADM1, CITY | SDG 6.1.1 WB_WDI SH.H2O.SMDW.ZS EPI UWD |
Popolazione che utilizza almeno acqua potabile di baseIND.WAT.access.basic_drinking_water.share | WAT | Drinking water and sanitation | vulnerability | % | COUNTRY, ADM1 | WB_WDI SH.H2O.BASW.ZS |
Popolazione che utilizza servizi igienico-sanitari gestiti in modo sicuroIND.WAT.access.safely_managed_sanitation.share | WAT | Drinking water and sanitation | vulnerability | % | COUNTRY, ADM1, CITY | WB_WDI SH.STA.SMSS.ZS SDG 6.2.1 EPI USD |
Popolazione con strutture di base per il lavaggio delle maniIND.WAT.access.basic_handwashing.share | WAT | Drinking water and sanitation | vulnerability | % | COUNTRY, ADM1 | WB_WDI SH.STA.HYGN.ZS SDG 6.2.1 |
Corpi idrici con buona qualità ambientale dell'acquaIND.WAT.quality.good_ambient_water_quality.share | WAT | Water quality | vulnerability | % | COUNTRY, ADM1 | SDG 6.3.2 |
Flussi di acque reflue trattati in modo sicuroIND.WAT.quality.wastewater_safely_treated.share | WAT | Water quality | coping capacity | % | COUNTRY, CITY | SDG 6.3.1 EPI WWT |
Indice di dipendenza da acque rinnovabili esterneIND.WAT.dependence.external_water_dependency | WAT | Transboundary dependence | exposure | % | COUNTRY | |
Superficie di bacini transfrontalieri con cooperazione operativaIND.WAT.dependence.transboundary_cooperation.share | WAT | Transboundary dependence | coping capacity | % | COUNTRY | SDG 6.5.2 |
Water security risk index, world
The world reading of this index, every country as a tile and the largest movements since the previous edition.
- Edizione precedente
- –
- Range since 2016
- –
- Composito accoppiato
- –
- Punteggio di accoppiamento S
- –
- Pulse, ultima settimana
- –
- Outlook, 12 months
- –
- Metodo
- Indicator Standard 1.0 · NXS-GRX 2026
- Estrazioni
- 1,000
Nessun valore ancora pubblicato. La prima edizione traccia qui lo storico con la banda dell'intervallo e i limiti di classe.
Country values
- Tile
/api/v1/public/grix/risk-products/tiles/wat/{z}/{x}/{y}.mvt- Chiave di osservazione
nis:IDX.WAT.stress.water_security_risk:{ISO3}:{YEAR}:A
Series that read this index
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 system | Leaf indicators mapped |
|---|---|
SDG | 8 |
WB_WDI | 6 |
EPI | 3 |
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.
In tutto il Nexus
Water Nexus · GRF Diplomacy · GRF Climate and Nature Governance.
Cita e riutilizza
See this index in every country profile
Each profile shows this index with its interval and class once released.
Stato
La metodologia, la struttura e le definizioni di The Global Risks Index sono una bozza di lavoro preparatoria (2026), diffusa per esame e commenti e non destinata all’attuazione. Nessun valore compare finché un’edizione non viene pubblicata a partire da un taglio di evidenze regolamentato; i valori riporteranno allora intervalli, classi, fonti e il relativo percorso di correzione. I simulatori applicano i metodi pubblicati ai numeri che scegli e non mostrano mai un valore NXS-GRX.
Che cosa non è NXS-GRX
NXS-GRX è un'informazione di ricerca e di analisi del rischio. Non è un rating creditizio o ESG e non usa alcuna scala di rating, non è un indice di riferimento per strumenti finanziari, non è una statistica ufficiale, non è un allerta di emergenza né una classificazione ufficiale e non è una consulenza. Non deve essere usato per valutare persone fisiche. Le classi di rischio sono fasce su una scala pubblicata, mai graduatorie di paesi o persone.
Istituzioni e fonti
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.
Ogni valore riporta l’attribuzione delle proprie fonti, che mantengono le rispettive licenze. I nomi esterni sono citati unicamente a fini di interoperabilità. I testi redatti da Nexus sono destinati alla licenza CC BY 4.0 al momento della pubblicazione.
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.