Water scarcity is not one number. It can mean insufficient physical supplies, high withdrawals relative to available resources, unreliable drinking-water services, groundwater dependence, or exposure to drought and floods.
The statistics below keep those measures separate while showing the scale of the global challenge.
Key Water Scarcity Statistics
The most important statistics at a glance:
- In 2022, about 2.2 billion people worldwide lacked safely managed drinking water, an SDG service category that is not identical to physical water scarcity.
- In the 2024 report summary, agriculture accounted for roughly 70% of global freshwater withdrawals, while industry accounted for just under 20% and domestic or municipal uses about 12%.
- In 2018, global groundwater withdrawals were estimated at approximately 978 cubic kilometres per year across all sectors.
- In 2022, agriculture represented 69% of global groundwater abstractions, compared with 22% for domestic uses and 9% for industry.
- Between 2000 and 2024, about 2.2 billion people gained access to safely managed drinking water worldwide, according to the JMP’s modelled service estimates.
- In 2024, 2.1 billion people still lacked safely managed drinking water worldwide; this is a service gap, not a count of people living in physically water-scarce basins.
- Between 2002 and 2021, droughts affected over 1.4 billion people worldwide, while floods affected about 1.6 billion.
- In 2015, United States water withdrawals were about 322 billion gallons per day, an aggregate across eight use categories rather than household consumption.
- In 2022, about 3.5 billion people worldwide lacked safely managed sanitation, a related water-security indicator rather than a direct scarcity count.
- In 2022, four out of five people lacking at least basic drinking-water services lived in rural areas worldwide.
- Since the 1980s, global freshwater demand increased by just under 1% per year, an approximate long-run rate cited in the 2024 report.
- The 2022 report estimated that 38% of land equipped for irrigation globally was serviced by groundwater.
- A planning scenario in the 2022 agriculture report projected a 50% increase in global food demand by 2050.
- In 2024, 106 million people worldwide drank directly from untreated surface-water sources.
- Between 2002 and 2021, floods caused about US$832 billion in economic losses worldwide, subject to disaster-reporting and valuation conventions.
Contents
Jump to a section:
- Key Water Scarcity Statistics
- How Many People Face Water Scarcity?
- Global Water Scarcity Data on Demand and Withdrawals
- Groundwater Statistics and Agricultural Water Scarcity
- Drinking-Water Access Data and Inequality
- Water Scarcity, Drought and Flood Statistics
- Water Stress Data: Measuring Water Scarcity
How Many People Face Water Scarcity?
The most widely quoted population figures often describe service access rather than hydrological supply:
- In 2022, about 2.2 billion people lacked safely managed drinking water worldwide. Safely managed drinking water is an SDG service category, so it should not be treated as a direct physical-scarcity count.
- The same year, about 3.5 billion people lacked safely managed sanitation, another related water-security indicator rather than a direct freshwater-scarcity measure. UN World Water Development Report 2024
The rural distribution is especially important. Four out of five people lacking at least basic drinking-water services in 2022 lived in rural areas.
This is the rural share of the unserved population, not the share of the total rural population. UN World Water Development Report 2024
Water-access figures include:
- A separate World Bank 2023 annual-report summary used a rounded estimate of over 2 billion people without safe drinking water.
- It also estimated that at least 1.8 billion people faced significant flood risk.
These figures address different exposures and should not be combined into a single scarcity total. World Bank: Ensuring water security for people and the planet
Global Water Scarcity Data on Demand and Withdrawals
Global demand has grown steadily over the long run. The UNESCO 2024 summary reports that global freshwater demand increased by just under 1% per year since the 1980s.
That is an approximate long-run rate, not a claim that every year rose at exactly the same pace. UN World Water Development Report 2024
Other figures in this section include:
- The same summary assigns roughly 70% of global freshwater withdrawals to agriculture, just under 20% to industry, and about 12% to domestic or municipal uses.
- Its agriculture page gives a more specific rounded estimate of 72% for agricultural production.
These are source-context estimates, not one exact series; withdrawals also differ from consumptive use. UN World Water Development Report 2024
Global freshwater withdrawals by broad sector
Rounded estimates in the UNESCO 2024 report summary.
| Category or period | Reported value |
|---|---|
| Agriculture | roughly 70% |
| Industry | just under 20% |
| Domestic or municipal | about 12% |
Source: UN World Water Development Report 2024. The categories are rounded global withdrawal shares, and the 72% agriculture estimate on the report’s agriculture page should not be silently merged with the general 70% summary.
Other figures in this section include:
- The 2022 groundwater report adds two different boundaries.
- Food processing can account for up to 5% of global water use, while irrigated agriculture accounts for an estimated 90% of all water evaporation in the cited global estimate.
Neither figure is a substitute for the sectoral withdrawal shares above. Groundwater, making the invisible visible
Groundwater Statistics and Agricultural Water Scarcity
Groundwater is both a buffer and a pressure point. The 2022 report estimated global groundwater withdrawals at approximately 978 cubic kilometres per year in 2018.
The estimate draws on AQUASTAT and other sources and is not a direct meter total. Groundwater, making the invisible visible
Groundwater figures include:
- Agriculture accounted for 69% of global groundwater abstractions in the report’s facts panel, with domestic uses at 22% and industrial purposes at 9%.
- A related summary rounded agriculture’s share of groundwater withdrawals to about 70%.
The two figures are close but belong to different report presentations and should not be presented as a precise contradiction. Groundwater, making the invisible visible
Nearly 50% of the global urban population is believed to be supplied from groundwater sources. The report’s wording matters: “nearly” and “believed” signal an estimate rather than an exact census percentage. Groundwater, making the invisible visible
Groundwater serviced an estimated 38% of land equipped for irrigation globally. Regional shares varied sharply:
| Region | Share of irrigation-equipped area serviced by groundwater |
|---|---|
| North America | 59% |
| South Asia | 57% |
| Northern Africa | 35% |
| Sub-Saharan Africa | 5% |
These percentages describe equipped irrigation area, not all cultivated land or total agricultural water use. They come from the cited 2022 agriculture report.
Source: Agriculture | UN World Water Development Report 2022
The same agriculture report projects a 50% increase in global food demand by 2050 in its planning scenario. This is a forecast, not an observed trend or guarantee. Agriculture | UN World Water Development Report 2022
Drinking-Water Access Data and Inequality
Water-access figures include:
- The JMP provides a service-ladder view of progress from 2000 to 2024.
- During that period, the global population rose from 6.2 billion to 8.2 billion, while about 2.2 billion people gained access to safely managed drinking water.
- About 2.8 billion gained safely managed sanitation, which is a related WASH outcome rather than a direct scarcity measure. Progress on household drinking water, sanitation and hygiene 2000–2024
- Even after that progress, 2.1 billion people lacked safely managed drinking water in 2024.
- In the same year, 106 million people drank directly from untreated surface sources.
- The JMP database covered 237 countries, areas and territories and contained nearly 9,000 national datasets in the 2025 report release. Progress on household drinking water, sanitation and hygiene 2000–2024
| Global service measure | 2000 | 2024 |
|---|---|---|
| Rural safely managed drinking-water access | 42% | 60% |
| Urban safely managed drinking-water access | 83% | 83% |
| Rural people using surface water | 232 million | 95 million |
| Urban people using surface water | 16 million | 9 million |
| Rural people with safely managed drinking water | 1.4 billion | 2.1 billion |
| Urban people with safely managed drinking water | 2.4 billion | 3.9 billion |
The table uses separate rural and urban denominators for the percentages and rounded population counts for the people measures. In 2000, 1.4 billion rural people and 2.4 billion urban people had safely managed drinking water; by 2024, the corresponding estimates were 2.1 billion and 3.9 billion. Progress on household drinking water, sanitation and hygiene 2000–2024
Water Scarcity, Drought and Flood Statistics
Water-related hazards show why scarcity cannot be reduced to access statistics. The global totals between 2002 and 2021 were:
| Hazard | Deaths | People affected | Economic losses |
|---|---|---|---|
| Floods | Nearly 100,000 | About 1.6 billion | About US$832 billion |
| Droughts | Over 21,000 | Over 1.4 billion | About US$170 billion |
Disaster totals depend on reporting, attribution and valuation conventions.
Source: UN World Water Development Report 2024
The report separately recorded 8,000 flood deaths, 57 million people affected, and about US$45 billion in flood losses in 2022. These are additional annual figures, not components of the 2002–2021 totals. UN World Water Development Report 2024
A World Bank projection estimates that the global economy could face US$5.6 trillion in losses by 2050 from worsening droughts, storms and torrential rain in major economies. This is a scenario projection, not a realized loss total, and the page describes selected large economies. World Bank: Ensuring water security for people and the planet
The same World Bank summary describes Ethiopia’s second One-Wash phase, begun in 2019, as aiming to provide safe water to 4.4 million people and better sanitation services to 4.8 million people. These are program targets, not measured global outcomes or evidence that the targets were fully achieved. World Bank: Ensuring water security for people and the planet
Water Stress Data: Measuring Water Scarcity
Water stress indicators compare withdrawals with available freshwater resources, while service indicators ask whether households have water meeting defined criteria. The World Bank’s indicator is defined as freshwater withdrawal as a proportion of available freshwater resources and attributes the series to FAO AQUASTAT.
Its portal page supplies definitions and downloadable measures but no single global value is used here. World Bank water-stress indicator
A national withdrawal example shows why units and boundaries matter:
- US water withdrawals totaled about 322 billion gallons per day in 2015, 9% lower than in 2010.
- Freshwater represented 87%, or about 281 billion gallons per day, while saline water represented 13%, or about 41.0 billion gallons per day.
These are USGS estimates across eight use categories, not potable supply or household consumption. USGS: Estimated use of water in the United States in 2015
US thermoelectric-power withdrawals alone were about 133 billion gallons per day in 2015. Large withdrawal volumes can coexist with different levels of consumptive use, return flow and local availability, so this figure should not be read as a direct measure of drinking-water demand. USGS: Estimated use of water in the United States in 2015
The USGS publisher’s direct page access was limited in the source record, with the displayed abstract and table text supporting these retained claims. More broadly, the evidence here combines official estimates, observed disaster totals, service-ladder modelling, program targets and forecasts.
Keeping those measurement types—and their dates, geographies and definitions—visible is essential when interpreting water scarcity statistics.