Tap water statistics span access, household supply, water-system operations, safety reporting and alternatives such as bottled water. The measures below distinguish safely managed drinking water from household tap use, and estimates from observed counts and forecasts.
Key Tap Water Statistics
The most broadly useful tap water figures include:
- In 2024, 74% of the global population used safely managed drinking-water services.
- In 2024, 60% of the global rural population used safely managed drinking-water services.
- In 2024, 83% of the global urban population used safely managed drinking-water services.
- About 2.1 billion people globally lacked safely managed drinking-water services in 2024.
- In 2024, 106 million people globally were drinking surface water.
- Global safely managed drinking-water coverage rose 6 percentage points, from 68% to 74%, between 2015 and 2024.
- Only 31 countries had more than 99% safely managed drinking-water coverage in 2024.
- About 283 million of 325 million U.S. residents received home water from a public supplier in 2015.
- Public suppliers delivered home water to about 87% of the U.S. population in 2015.
- U.S. domestic water use from public suppliers was 23,300 million gallons per day in 2015.
- Average public-supply withdrawals in the conterminous United States were 35,440 million gallons per day during 2010–2020.
- U.S. public-supply domestic per-capita use fell from 88 gallons per person per day in 2010 to 82 gallons in 2015.
- CDC estimates that at least 1.1 million U.S. people become ill each year from germs in drinking water.
- There were 147,252 active U.S. public water systems in 2024.
- Nearly 69% of active U.S. public water systems had no reported drinking-water-standard violations in 2024.
- U.S. bottled-water volume rose from about 1.325 billion liters in 1976 to 48.45 billion liters in 2016.
- Bottled water was estimated to cost 240 to 10,000 times more than tap water in the cited U.S. study background.
- Safely managed drinking-water coverage in Lao People’s Democratic Republic rose from 12% in 2015 to 35% in 2024.
- At current progress rates, global safely managed drinking-water coverage is forecast to reach about 77% by 2030.
Contents
- Key Tap Water Statistics
- Global Tap Water Access and Safely Managed Drinking-Water Data
- U.S. Tap Water Sources and Household Use
- Tap Water Withdrawals, Delivery Volumes and Per-Capita Trends
- Tap Water Safety, Outbreaks and Public-System Compliance
- Tap Water Consumption, Bottled Water and Filtration Context
- Inequalities and Country-Level Tap Water Trends
Global Tap Water Access and Safely Managed Drinking-Water Data
The WHO/UNICEF Joint Monitoring Programme (JMP) defines safely managed drinking water as an improved source on premises, available when needed and free from contamination. That composite indicator is broader than, and not identical to, household piped tap-water access.
In 2024, safely managed services reached 74% of the global population, while the estimate was 60% for rural populations and 83% for urban populations. About 2.1 billion people therefore lacked safely managed services, and 106 million people were drinking surface water; surface water is a JMP category, not treated tap water.
| Population or threshold | 2024 estimate | Period or definition |
|---|---|---|
| Global population using safely managed services | 74% | 2024 |
| Rural population | 60% | 2024 |
| Urban population | 83% | 2024 |
| Population lacking safely managed services | About 2.1 billion | 2024 |
| People drinking surface water | 106 million | 2024 |
WHO/UNICEF JMP, Progress on household drinking water, sanitation and hygiene 2000–2024 reports these modeled estimates.
Between 2015 and 2024, global safely managed coverage rose from 68% to 74%, while rural coverage increased from 50% to 60%. Urban coverage remained 83% when rounded, which does not mean that every underlying estimate was unchanged, and only 31 countries exceeded 99% coverage in 2024.
U.S. Tap Water Sources and Household Use
U.S. public-supply statistics describe water delivered to homes as well as the broader domestic system. In 2015, about 283 million of 325 million U.S. residents received home water from a public supplier, equivalent to about 87% of the population; the remaining 13% was not served by public-supply home water and included self-supplied households and other arrangements.
| U.S. measure | 2015 figure | Scope |
|---|---|---|
| Residents receiving home water from public suppliers | About 283 million of 325 million | United States |
| Population served by public suppliers | About 87% | United States |
| Self-supplied domestic withdrawals | 3,260 million gallons per day | United States |
| Public-supplier domestic water use | 23,300 million gallons per day | United States |
| Public-supply withdrawals | About 39,200 million gallons per day | All public-supply customers |
USGS, Estimated use of water in the United States in 2015 reports that domestic use includes drinking, food preparation, bathing, laundry, toilets and outdoor uses. Self-supplied domestic withdrawals were 98% groundwater and 2% surface water, while self-supplied use represented 12% of total U.S. domestic water use.
These figures should not be read as drinking-only volumes. Public-supply withdrawals also serve commercial, industrial and other customers, while domestic-use totals combine many household activities.
Tap Water Withdrawals, Delivery Volumes and Per-Capita Trends
USGS modeled data for the conterminous United States show the difference between water withdrawn and water consumed. Average public-supply withdrawals were 35,440 million gallons per day during 2010–2020, compared with average public-supply consumptive use of 4,219 million gallons per day.
In 2020, public-supply withdrawals were 35,943 million gallons per day and consumptive use was 4,157 million gallons per day. The modeled consumptive-use-to-withdrawal ratio was 0.12 nationally, ranging from 0.08 in several coastal and Great Lakes regions to 0.23 in the Southwest Desert.
| Measure | Figure | Geography and period |
|---|---|---|
| Average public-supply withdrawals | 35,440 million gallons/day | Conterminous U.S., 2010–2020 |
| Average consumptive use | 4,219 million gallons/day | Conterminous U.S., 2010–2020 |
| Public-supply withdrawals | 35,943 million gallons/day | Conterminous U.S., 2020 |
| Public-supply consumptive use | 4,157 million gallons/day | Conterminous U.S., 2020 |
| Consumptive-use-to-withdrawal ratio | 0.12 | Conterminous U.S., 2020 |
USGS, Water use across the conterminous United States, water years 2010–20 notes that modeled withdrawal estimates varied by 4% across 2010–2020, while consumptive-use estimates varied by 20%. Those variations describe model estimates, not a measured national trend in tap consumption.
Per-capita domestic use also declined in the USGS 2015 comparison: public-supply domestic use fell from 88 gallons per person per day in 2010 to 82 gallons in 2015, and total domestic use fell from 87 to 82 gallons per person per day. Both measures include household uses beyond drinking.
Tap Water Safety, Outbreaks and Public-System Compliance
Safety data combine illness estimates, reported outbreak causes and regulatory system records, each with a different denominator. The CDC estimates that at least 1.1 million U.S. people become ill each year from germs in drinking water, an approximation of about 1 in every 300 people per year; it does not cover every contaminant or every illness.
During 2010–2022, Giardia ranked third among causes of U.S. public community drinking-water outbreaks, while E. coli ranked third among causes of U.S. private drinking-water outbreaks. These are reported-outbreak rankings, not estimates of contamination prevalence in all taps.
EPA counted 147,252 active U.S. public water systems in 2024. Nearly 69% had no reported drinking-water-standard violations, while 45,980 had at least one reported violation and 10,769 had at least one health-based violation.
| 2024 EPA measure | Systems or share | Interpretation |
|---|---|---|
| Active public water systems | 147,252 | Regulated systems, not individual taps |
| No reported standard violations | Nearly 69% | Reported compliance status |
| At least one standard violation | 45,980 | System-level observation |
| At least one health-based violation | 10,769 | Limit or treatment-technique failure |
| Lead-service-line-inventory requirement violations | 3,902, about 2.7% | Reporting requirement, not lead concentration |
| Formal enforcement actions initiated | 3,192 | System-level action count |
| Informal enforcement actions initiated | 30,530 | System-level action count |
| Returned to compliance | 22,305 | EPA-reported status |
CDC, Drinking Water Facts and Stats provides the illness and outbreak figures. EPA, Providing Safe Drinking Water in America provides the 2024 compliance counts; reported compliance does not guarantee identical quality at every household tap.
Tap Water Consumption, Bottled Water and Filtration Context
Bottled-water sales provide a market measure that is related to, but does not directly measure, household tap-water consumption. U.S. bottled-water volume increased from about 1.325 billion liters in 1976 to 48.45 billion liters in 2016, and the 2016 volume was reported as about 12.8 billion U.S. gallons.
A peer-reviewed study described EPA-regulated public water systems as serving about 90% of the U.S. population in its background discussion. It also cited an estimate that bottled water cost 240 to 10,000 times more than tap water, with the range depending on prices and assumptions.
CDC Stacks, Disparities in plain, tap and bottled water consumption among US adults reports the market and background comparisons. Its NHANES findings are survey associations, and “plain water” includes tap, fountain, cooler, bottled and spring water; those findings should not be treated as a direct measure of tap-water-only consumption or filtration outcomes.
Inequalities and Country-Level Tap Water Trends
In 2024, safely managed drinking-water estimates covered 160 countries but represented 72% of the global population in the indicator dataset. JMP country and global aggregates include modeled or imputed estimates where data availability permits.
| Country or group | Safely managed coverage trend | Period |
|---|---|---|
| Lao People’s Democratic Republic | 12% to 35% | 2015–2024 |
| Bhutan | 47% to 66% | 2015–2024 |
| Morocco | Increased 17 percentage points | 2015–2024 |
| Jordan | Increased 16 percentage points | 2015–2024 |
| India | Increased 15 percentage points | 2015–2024 |
| Ghana | Increased 12 percentage points | 2015–2024 |
| United Republic of Tanzania | 21% to 31% | 2015–2024 |
| Tunisia | Declined by more than 10 percentage points | Since 2015 |
The JMP attributes Tunisia’s decline to negative trends in availability when needed and microbiological contamination-free water. These country measures describe safely managed service coverage, not simply the percentage of homes with a piped tap.
At current progress rates, global safely managed drinking-water coverage is forecast to reach about 77% by 2030, while more than 2 billion people would remain without safely managed drinking water. This is a projection based on current rates and population assumptions, not a guaranteed outcome.
WHO/UNICEF JMP, Progress on household drinking water, sanitation and hygiene 2000–2024 supplies the country trends, coverage scope and 2030 forecast.