Key Takeaways
- In 2023, 2.2 billion people globally lacked access to safely managed drinking water services, representing 27% of the world population.
- Sub-Saharan Africa has the lowest access to safely managed drinking water at 32% coverage in 2022.
- By 2025, half of the world's population will be living in water-stressed areas, affecting 4.8-5.7 billion people.
- In 2023, 73 million more people gained basic water services since 2015, but gap remains.
- Middle East and North Africa region faces water scarcity affecting 83% of population in 2022.
- 17 countries, home to 25% of world population, face extremely high water stress.
- Every minute, a football field-sized area of land turns desert-like due to drought and scarcity.
- 3.5 billion people lack safely managed sanitation in 2023.
- 419,000 diarrheal deaths annually among children under 5 due to poor WASH.
- 829,000 people die yearly from cholera linked to poor sanitation.
- Unsafe water, sanitation cause 829,000 deaths annually worldwide.
- Diarrheal diseases kill 525,000 children under 5 yearly from poor WASH.
- Economic losses from waterborne diseases: $12 billion/year globally.
- Poor WASH costs global economy $260 billion/year in health/tourism losses.
- Sanitation investment returns $5.50 per $1 spent.
The global water crisis threatens billions of people who lack safe and reliable access.
Climate and Future Projections
- Climate change to reduce renewable water 10-30% by 2050 in Africa.
- Global glacier melt: 18%-36% volume loss by 2100, affecting 1.9B people.
- Sea level rise 0.3-1m by 2100 threatens 1B coastal water access.
- Drought frequency up 3-fold since 1950s, projected 2x by 2050.
- By 2050, 5.7B people face water scarcity at least 1 month/year.
- Precipitation decline 20% in Mediterranean by 2050.
- Arctic freshwater input to oceans up 25% since 1960s.
- Crop water requirements up 5-20% per 1°C warming.
- 50% increase in extreme rain events by 2100 under high emissions.
- Groundwater recharge down 15-30% in South Asia by 2050.
- Permafrost thaw releases 1,500 Gt water equivalent by 2100.
- Monsoon variability up 15% by 2050 in India.
- Global runoff changes: -10 to +40% by 2100 regionally.
- Coral reefs, source of 25% marine fish, 99% gone by 2050.
- Water temperature rise 1-3°C by 2050 affects quality.
- Evapotranspiration up 5-10% per °C warming globally.
- Mega-drought risk 50% higher in Southwest US by 2050.
- Himalayan glaciers lose 65% mass by 2100, affecting 250M.
- Flood risk up 24% globally by 2050 with 1.5°C warming.
- Africa: renewable water resources down 40-60% by 2080.
- Salinization affects 1B ha land by 2050, reducing water.
- Cloudburst events up 7%/decade since 1950.
- Water demand up 20-55% by 2050, supply lags.
- Latin America: glacier loss 84% by 2100.
- Extreme heat-water scarcity combo displaces 86M by 2050.
Climate and Future Projections Interpretation
Economic and Social Impacts
- Economic losses from waterborne diseases: $12 billion/year globally.
- Poor WASH costs global economy $260 billion/year in health/tourism losses.
- Sanitation investment returns $5.50 per $1 spent.
- Water scarcity reduces GDP by 6% of GDP in agriculture-dependent economies.
- 700 million people may be internally displaced by water scarcity by 2030.
- Women spend 16% of time collecting water vs 8% for men in Africa.
- Global water market valued at $1 trillion, infrastructure gap $6.7T by 2050.
- Agriculture loses $100 billion/year to drought in developing countries.
- India: poor sanitation costs 6.4% of GDP ($143B) annually.
- Water-related disasters cost $260B/year, 90% from floods/droughts.
- 2.4 billion people in water-stressed areas, impacting livelihoods.
- Fisheries: 20% decline due to water pollution/eutrophication.
- Gender gap: girls miss 142M school days/year due to water collection.
- Global WASH financing needs $131-140B/year to meet SDG6.
- Crop yield losses 45% without irrigation in water-scarce areas.
- Tourism losses from water shortages: $10B/year in Mediterranean.
- 40% of world population in urban areas face water insecurity.
- Microfinance for WASH: serves 20 million, but needs scale.
- Droughts displace 18.8 million people/year average 2008-2020.
- Energy sector: water scarcity risks $80B losses by 2030.
- Poor WASH reduces worker productivity by 3-4% GDP.
- Conflict-water link: 40% of intrastate conflicts water-related.
- Global fisheries value $362B, threatened by water quality.
- Social cost of pollution: $2.2T/year in health/economy.
- WASH jobs: potential 10 million new by 2030 with investment.
- By 2050, water crisis could cost $35T in damages.
- By 2030, 47% of world population in water-stressed basins.
Economic and Social Impacts Interpretation
Health and Disease Impacts
- 829,000 people die yearly from cholera linked to poor sanitation.
- Unsafe water, sanitation cause 829,000 deaths annually worldwide.
- Diarrheal diseases kill 525,000 children under 5 yearly from poor WASH.
- 43% of diarrheal deaths in low-income countries due to unsafe water.
- Stunting affects 149 million children under 5, partly due to WASH (22%).
- Schistosomiasis infects 240 million people yearly, water-related.
- 1.7 billion children at risk of waterborne diseases like cholera.
- Malaria transmission linked to water storage: 10% cases.
- Poor WASH causes 1.4 million deaths/year from neglected tropical diseases.
- In Africa, 115 people die hourly from diseases linked to unsafe water.
- Trachoma blinds 1.2 million, preventable with WASH.
- 58,000 deaths/year from leptospirosis, rodent-water link.
- WASH in healthcare: poor hygiene causes 136 million infections/day.
- Arsenic in groundwater affects 140 million in 70 countries.
- Fluorosis impacts 70 million in India from excess fluoride in water.
- Hepatitis A from contaminated water: 1.4 million cases/year.
- 4 billion episodes of diarrhea yearly in children under 5.
- Guinea worm cases down 99.99% to 14 in 2022 via water treatment.
- Poor sanitation increases stunting risk by 25%.
- 2.5 billion people exposed to fecal contamination in drinking water.
- Typhoid fever: 9 million cases, 110,000 deaths yearly.
- WASH interventions reduce child mortality by 20%.
- Dengue affects 390 million/year, mosquito breeding in water.
- 829,000 annual sanitation-related deaths, 60% in Africa/South Asia.
- Nitrate pollution in water causes 42,000 colorectal cancer cases/year in EU.
- Onchocerciasis (river blindness) affects 20 million, water vector.
- Poor WASH costs 5% of GDP in low-income countries via health losses.
- 300 million acute gastroenteritis cases/year from drinking water.
- Lead in water affects 100 million in US alone, neuro impacts.
- Global burden: WASH causes 1.5% of total DALYs lost.
- Vibrio cholerae outbreaks: 1.3-4 million cases, 21k-143k deaths/year.
- Poor water quality contributes to 10% of antimicrobial resistance deaths.
Health and Disease Impacts Interpretation
Sanitation and Hygiene
- Every minute, a football field-sized area of land turns desert-like due to drought and scarcity.
- 3.5 billion people lack safely managed sanitation in 2023.
- 419,000 diarrheal deaths annually among children under 5 due to poor WASH.
- 564 million women and girls globally lack private toilets at home.
- In India, 55% of rural households had no toilet in 2019 pre-Swachh Bharat.
- Global safely managed sanitation coverage: 54% in 2022.
- 1.7 billion people use surface water for drinking without treatment.
- Schools: 59% in least developed countries lack basic sanitation in 2023.
- Open defecation practiced by 494 million people in 2022, down from 1.3B in 2000.
- Handwashing facilities with soap available to 74% globally at home in 2021.
- In sub-Saharan Africa, sanitation coverage is 32% safely managed.
- 2.3 billion people lack basic sanitation services in 2023.
- Menstrual hygiene: 500 million women lack adequate facilities.
- Global wastewater treatment rate: only 52% of municipal wastewater treated.
- In urban slums, 1 in 5 lack improved sanitation.
- Bangladesh reduced open defecation from 42% to 1% by 2022 via CLTS.
- 800 million lack basic handwashing facilities at home.
- Pacific Islands: sanitation access averages 70%, but rural 40%.
- Global sanitation investment gap: $114 billion annually needed.
- 1 in 10 people worldwide practice open defecation in 2023.
- Ethiopia: sanitation coverage 37% basic in 2022.
- Handwashing prevents 30% of diarrheal diseases.
- 2.4 billion people worldwide lack basic hygiene facilities.
- In Latin America, 35 million lack improved sanitation.
- Global handwashing rate with soap after defecation: 19%.
- Yemen: 56% open defecation rate in 2023.
- Sanitation-attributable child mortality: 1,300 daily deaths.
- 70% of industrial wastewater discharged untreated in developing countries.
- Nigeria: 70 million without basic sanitation services.
- Hygiene promotion reduces diarrheal incidence by 32%.
- Global safely managed hygiene services cover 58% of population in 2022.
Sanitation and Hygiene Interpretation
Water Access and Availability
- In 2023, 2.2 billion people globally lacked access to safely managed drinking water services, representing 27% of the world population.
- Sub-Saharan Africa has the lowest access to safely managed drinking water at 32% coverage in 2022.
- By 2025, half of the world's population will be living in water-stressed areas, affecting 4.8-5.7 billion people.
- 785 million people lack basic drinking water services, relying on unprotected wells or springs as of 2021.
- In rural areas worldwide, only 59% of the population had access to safely managed drinking water in 2020.
- Globally, 115.5 million people collected drinking water from unprotected dug wells in 2022.
- Women and girls spend 200 million hours daily collecting water in the world's poorest regions.
- 1 in 4 healthcare facilities worldwide lacked basic water services in 2021.
- In 2022, 43% of the global population used drinking water from unimproved sources or surface water.
- Yemen has the lowest basic water access rate at 45% of the population in 2023.
- Globally, 4 billion people experience severe water scarcity for at least one month per year.
- In 2021, 26% of the global population practiced open defecation due to lack of sanitation linked to water access.
- Schools in low-income countries: 70% lack basic water services as of 2022.
- Pacific Island nations average 89% access to basic water services, but safely managed drops to 40% in 2023.
- In India, 163 million people lacked basic drinking water access in 2020.
- Global freshwater use reached 4,600 km³ per year in 2022, with agriculture consuming 70%.
- 1.8 billion people use fecal-contaminated drinking water sources as of 2023.
- In urban areas, 84% had access to safely managed water in 2022, vs 55% in rural.
- Ethiopia: 60% of population without basic water services in 2023.
- Global water demand projected to increase 55% by 2050 from 2010 levels.
- 29% of people in least developed countries lack basic water services in 2021.
- In 2022, 2.4 billion people used drinking water contaminated with E. coli.
- Niger has only 52% basic water access coverage in 2023.
- Globally, 3.6 billion people (46%) lacked safely managed sanitation in 2022.
- In Latin America, 84 million lack access to improved water sources in 2021.
- 844 million people lack basic facilities for washing hands at home in 2023.
- In Central Asia, water availability per capita dropped 20% from 1990-2020.
- 1.6 million people die annually from diarrheal diseases due to unsafe water in low-income areas.
- Papua New Guinea: 63% without basic water services in 2022.
- Global per capita water availability fell from 17,000 m³/year in 1950 to 6,000 m³/year in 2020.
Water Access and Availability Interpretation
Water Scarcity and Stress
- In 2023, 73 million more people gained basic water services since 2015, but gap remains.
- Middle East and North Africa region faces water scarcity affecting 83% of population in 2022.
- 17 countries, home to 25% of world population, face extremely high water stress.
- India uses 80% of its water for agriculture, leading to groundwater depletion of 19 km³/year.
- By 2030, global water demand for manufacturing expected to rise 400%.
- California's water stress score is 2.71 out of 5, highest in US states in 2023.
- 2.67 billion people experience high to extremely high water stress at least one month/year.
- Global groundwater depletion averages 145 km³/year from 2000-2020.
- Pakistan's Indus Basin: water availability per capita below 1,000 m³/year since 2010.
- Australia’s Murray-Darling Basin lost 20% of water storage capacity due to overuse by 2022.
- 80% of the world's wastewater is returned untreated to the environment.
- China’s North China Plain: groundwater levels dropped 1m/year average 2000-2020.
- By 2040, 1 in 4 children will live in areas with extreme water shortages.
- Global virtual water trade equals 2,320 km³/year, equivalent to 4 times the Amazon flow.
- Iran faces 100% population under high water stress, with 50% in extremely high.
- Nile Basin: per capita water availability declined 70% from 1960-2020.
- Global blue water footprint of humanity exceeds sustainable limits by 13%.
- South Africa’s water demand exceeds supply by 17% annually since 2018.
- Aral Sea shrank 90% since 1960 due to irrigation overuse.
- Global crop water use: 7,100 km³/year, 70% of total freshwater withdrawal.
- Mexico City sinking 50 cm/year due to groundwater extraction.
- 1/3 of world’s population lives in water-scarce conditions monthly.
- Jordan River Basin: water use exceeds renewable supply by 160%.
- Global desalination capacity reached 100 million m³/day in 2023.
- Lake Chad shrunk 90% since 1960s due to overuse and climate.
- Saudi Arabia produces 30% of world desalinated water, consuming 50% of its energy.
- Global water stress hotspots increased 20% from 2000-2020.
Water Scarcity and Stress Interpretation
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