Share of population using at least a basic drinking water source in Tonga
Tonga: Share of population using at least a basic drinking water source was 98.9% in 2024. ▬ Flat
Share of population using at least a basic drinking water source in Tonga, 2000–2024
Source: WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data. Measured in %.
Analysis
Tonga recorded 98.9% for share of population using at least a basic drinking water source in 2024. That is the highest value across all 25 years on record.
Compared with earlier readings it is up 0.1% over ten years.
Over the whole period, share of population using at least a basic drinking water source in Tonga peaked at 98.9% in 2024 and was at its lowest, 98.5%, in 2004.
That places Tonga 94th out of 231 countries with data for 2024, putting it in the middle of the range.
Share of population using at least a basic drinking water source in Tonga, year by year
| Year | % | Change |
|---|---|---|
| 2000 | 98.5% | — |
| 2001 | 98.5% | -0.0% |
| 2002 | 98.5% | -0.0% |
| 2003 | 98.5% | -0.0% |
| 2004 | 98.5% | -0.0% |
| 2005 | 98.6% | +0.0% |
| 2006 | 98.6% | +0.0% |
| 2007 | 98.7% | +0.0% |
| 2008 | 98.7% | +0.0% |
| 2009 | 98.8% | +0.0% |
| 2010 | 98.8% | +0.0% |
| 2011 | 98.8% | -0.0% |
| 2012 | 98.8% | -0.0% |
| 2013 | 98.8% | -0.0% |
| 2014 | 98.8% | -0.0% |
| 2015 | 98.8% | -0.0% |
| 2016 | 98.8% | -0.0% |
| 2017 | 98.8% | -0.0% |
| 2018 | 98.8% | -0.0% |
| 2019 | 98.8% | -0.0% |
| 2020 | 98.8% | -0.0% |
| 2021 | 98.8% | -0.0% |
| 2022 | 98.8% | +0.0% |
| 2023 | 98.9% | +0.0% |
| 2024 | 98.9% | +0.0% |
Tonga compared with similar countries
- Tonga's 98.9% is above the median for upper middle income countries, which is 96.7%, 1.0× the median. (58 countries reporting)
- Tonga's 98.9% is above the median for East Asia & Pacific, which is 98.7%, 1.0× the median. (37 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 98.6% | 98.5% | 98.8% | 10 |
| 2010s | 98.8% | 98.8% | 98.8% | 10 |
| 2020s | 98.8% | 98.8% | 98.9% | 5 |
Countries ranked near Tonga
- 91 Saudi Arabia 99.0% compare
- 92 Bahamas 98.9% compare
- 93 Antigua and Barbuda 98.9% compare
- 95 Turks and Caicos Islands 98.8% compare
- 96 Bangladesh 98.8% compare
- 97 Latvia 98.8% compare
More environment data for Tonga
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.234 °C (2025)
- Temperature change 0.858 °C (2025)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 3.06 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), annual growth rate 0.1689 % change on previous year (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per unit of GDP 0 Mt CO2e per US$ of GDP (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), annual 0 % change on previous year (2024)
Frequently asked questions
- What is share of population using at least a basic drinking water source in Tonga?
- Share of population using at least a basic drinking water source in Tonga was 98.9% in 2024, according to WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data.
- What is the highest share of population using at least a basic drinking water source recorded in Tonga?
- The highest recorded value was 98.9% in 2024.
- What is the lowest share of population using at least a basic drinking water source recorded in Tonga?
- The lowest recorded value was 98.5% in 2004.
- How does Tonga rank for share of population using at least a basic drinking water source?
- Tonga ranks 94th out of 231 countries with data for 2024.
- Is share of population using at least a basic drinking water source rising or falling in Tonga?
- Over the last ten years it is up 0.1%. The long-run trend across the full record is flat.
- Where does this Tonga data come from?
- The figures come from WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data, published as part of Share of population using at least a basic drinking water source. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 25 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Proportion of people who use an improved drinking water source, which is either located on their premises, or at a collection point, which takes no more than 30 minutes for a roundtrip.